Monthly Archives: June 2018

Kerry James Marshall: a ‘song’ of racism in multiple media

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Racism and social justice are two themes often found in the works featured at the Rennie Museum (formerly Rennie Collection). Local real estate marketer, Bob Rennie has been showing works there from his collection since at least 2009 when I wrote my first commentary about it (December 4, 2009).

Kerry James Marshall, the latest artist to have his work featured (June 2 – November 3, 2018), carries on the tradition while making those artistic ‘themes’ his own n a breathtaking (in both its positive and negative meanings) range of styles and media.

Here’s a brief description of some of the works, from an undated Rennie Museum press release,

Rennie Museum presents a survey of works by Kerry James Marshall spanning thirty-two years of the artist’s career. Kerry James Marshall: Collected Works features pieces from the artist’s complex body of work, which interrogates the sparse historical presence of African-Americans through painting, sculpture, drawing and other media. …

The sculptural installation Untitled (Black Power Stamps) (1998) [emphasis mine], Marshall’s very first work acquired by Bob Rennie, aptly sets the tone of the exhibition. Five colossal stamps and their corresponding ink pads are dispersed over the floor of the museum’s four-story high gallery space. Inscribed on each stamp, and reiterated on the walls, are phrases of power dating back to the Civil Rights Movement: ‘Black is Beautiful’, ‘Black Power’, ‘We Shall Overcome’, ‘By Any Means Necessary’, and ‘Burn Baby Burn’. The sentiment reverberates through the three 18 feet (5.5 metre) wide paintings installed in the same room, respectively titled Untitled (Red) (2011), Untitled (Black) and Untitled (Green) (2012). Exhibited together for the first time in North America, the imposing paintings with their colours saluting the Pan African flag echo the form of Barnett Newman’s Who’s Afraid of Red, Yellow and Blue III (1967).

Commanding attention in the center of another room is Wake (2003-2005) [emphasis mine], a sculptural work that focuses on the collective trauma of slavery. Draped atop a blackened model sailboat is a web of medallions featuring portraits of descendants of the approximately twenty African slaves who first landed in Jamestown, Virginia in 1607. Atop a polished black base evoking the deep seas, the medallions cascade over and behind the mourning vessel in a gilded procession, cast out in the boat’s wake. The work commemorates an entire lineage of people whose lives have been irrevocably affected by the traumatic history of slavery in the United States, while simultaneously celebrating the resilience and vivacity of the culture that flourished from it.

Garden Party (2004-2013) [emphasis mine] is a long-coveted painting that Marshall re-worked over the course of almost ten years. Created in a style that harkens 19th century impressionist paintings, the work depicts a scene of leisure – an array of multi-ethnic friends and neighbours casually gathered in a backyard of a social housing project. Painted on a flat canvas tarp and hung barely off the floor, the image highlights an often-overlooked perspective of the vibrant everyday life in the projects and invites its viewers to join in the gathering.

In a dimmed room is Invisible Man (1986) [emphasis mine] – a historic work and one of the first to feature Marshall’s now iconic black on black tonal painting. Referencing Ralph Ellison’s 1952 novel of the same title, Marshall’s work literalizes the premise of black invisibility. Only distinguishable by his bright-white eyes and teeth, and the subtle warmth that delineates black body from black background, Marshall’s figure, like Ellison’s protagonist, subverts his own invisibility, using colour as an emblem of power rather than of submission. The work’s presentation at Rennie Museum provides an opportunity for viewers to explore the full mastery with which Kerry James Marshall layers his various shades of black.

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As always, you book a tour or claim a space on a tour (here) to see the latest exhibition and are guided through the gallery spaces. What follows is a series of pictures depicting the Marshall pieces in that first room (from the Rennie Museum’s photographic documentation for Marshall’s work), Note: There are five pages of documentation and I encourage you to look at all five,

Installation View. Courtesy:: Rennie Museum

Blot, 2014. acrylic on pvc panel 84 × 119 5/8 × 3 3/8 inches (213 × 304 × 9 cm). Courtesy: Rennie Museum

Sculpture (Ibeji), 2006. wood, fabric, beads 24 × 12 × 14 inches (61 × 30 × 36 cm) Courtesy: Rennie Museum

Heirlooms and Accessories, 2002. 3 inkjet prints on wove paper, rhinestone encrusted wooden artist’s frames each: 56 5/8 × 53 3/4 inches (144 × 137 cm) Courtesy: Rennie Museum

I’ve placed the pieces in the order in which I viewed them. Being at the opening event on June 2, 2018 meant that rather than having a tour, we were ‘invited’ to look at the pieces and ask questions of various ‘attendants’ standing nearby. The ‘Blot’, with all that colour, immediate drew my attention and not having read the title of the piece, I commented on its resemblance to a Rorschach Inkblot. It was my only successful guess of the visit and I continue to bask in it.

According to the attendant, in addition to resembling said inkblot, this piece also addresses abstract expressionism and the absence of African American visual artists from the movement. In this piece as with many others, Marshall finds a way to depict absence despite the paradox (a picture of absence) in terms.

‘Heirlooms and Accessories’ is an example of Marshall’s talent for depicting absence. At first glance the piece seems benign. There is a kind of double frame. The outermost frame is white and inside (abutting the artwork) a diamante braid has been added all around it to create a double frame. The braid is very pretty and accentuates the lockets depicted in the image. There are three white women pictured in their lockets and beneath those lockets and the white paint lay images of African Americans being lynched. The women, by the way, were complicit in the lynchings. It was deeply unsettling to learn this as my friend and I had just moments before been admiring the diamante braid.

Marshall’s work seems designed to force the viewer to look beneath the surface, which means stripping away layers, which with ‘Heirlooms’ means that you strip away the whitewashing.

As a white woman, the show is a profoundly disturbing  experience. Marshall’s range of materials and mastery are breathtaking (in the positive sense) and the way he seduces the (white) viewer into coming closer and experiencing the painting, metaphorically speaking, as a mirror rather than a picture. Marshall has flipped the viewer’s experience making it impossible (or very difficult) to blame racism on other people while failing to recognize your own sins.

The third piece in the room, the sculpture is a representation of a standard of beauty still not often seen in popular culture in North America. Weirdly, it reminded me of something from a December 21, 2017 posting on the LaineyGossip blog,

[downloaded from http://www.laineygossip.com/princess-michael-of-kent-racist-jewelry-greets-meghan/48728]

I don’t know well you can see this, but it’s an example of ‘Blackamoor jewellery’. The woman wearing it is Princess Michael of Kent and at the time the picture was taken she was on her to a Christmas 2017 lunch with the Queen of England. The lunch is where she was to meet Meghan Markle who describes herself as a woman of mixed race and is now the Duchess of Sussex and married to the Queen’s grandson, Harry. For anyone unfamiliar with ‘Blackmoor art’ here’s a July 31, 2015 essay by Anneke Rautenbach for New York University,

… Blackamoors—a trope in Italian decorative art especially common in pieces of furniture, but also appearing in paintings, jewelry, and textiles. The motif emerged as an artistic response to the European encounter with the Moors—dark-skinned Muslims from North Africa and the Middle East who came to occupy various parts of Europe during the Middle Ages. Commonly fixed in positions of servitude—as footmen or waiters, for example—the figures personify fantasies of racial conquest.

I trust Princess Michael was made to remove her brooch before entering the palace.

The contrast between Marshall’s sculpture emphasizing the dignity and beauty of the figure and the ‘jewellery’ is striking. The past, as Marshall reminds us, is always with us. From Rautenback’s July 31, 2015 essay (Note: A link has been removed),

Gaudy by nature, and uncomfortably dated—a bit like the American lawn jockey, or Aunt Jemima doll— … Blackamoors are still a thriving industry, with the United States as their no. 1 importer. (In fact, the figurines are especially popular in Texas and Connecticut—search “Blackamoor” online and you’ll find countless listings on eBay, Etsy, and elsewhere.) Unlike their American counterparts, which focus mostly on romanticizing scenes from the era of slavery, these European ornaments often depict black bodies as exotic noblemen. And not everyone considers them passé: As recently as September 2012, the Italian fashion house Dolce & Gabbana invited outrage when it included a caricatured black woman figurine on an earring as part of its spring/summer collection.

Encountering bias and (conscious or unconscious) racism in one’s self is both deeply  chastening and a priceless gift.  It’s one that comedienne Roseanne Barr seems determined to refuse (from a June 14, 2018 article by Marissa Martinelli for Slate.com (Note: Link have been removed),

Barr […] suggested on Thursday [June 14, 2018] that it is only “low IQ” people who would interpret describing a black woman as “Muslim Brotherhood & planet of the apes had a baby” as racist. The real explanation is apparently much deeper:

Roseanne Barr‏Verified account @therealroseanne

Rod Serling wrote Planet of The Apes. It was about anti-semitism. That is what my tweet referred to-the anti semitism of the Iran deal. Low IQ ppl can think whatever they want.

8:08 PM – 13 Jun 2018

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Low IQ people and Rod Serling’s screenwriting join Ambien and Memorial Day on the growing list of entities that Barr has used to justify the racist tweet over the past two weeks. The one person whose name you will not find on that list of people responsible for what Roseanne Barr said is Roseanne Barr herself.

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Even with such an obvious tweet, Barr can’t (consistently) admit to and (consistently) apologize for her comment. It may not seem like a gift to her but it is. Facing up to one’s sins and making reparation can help heal the extraordinary wounds that Marshall is making visible.

You may have noticed that I called this show ‘a song of racism’. It’s a reference to poetry which in ancient times was sometimes referred to as a song (Song of Solomon, anyone?). It was also a narrative instrument, i. e., used for storytelling for an active, participatory audience.

Marshall tells a story in allusive language (like poetry) and tricks/seduces you into participating.

On that note, I have one last story to tell and it’s about the placement of Marshall’s artworks in the first floor room. It’s my story, yours and Marshall’s might be different but he has inspired me and so …

The ‘Blot’ or Rorschach Inkblot is a test, which tells a psychologist something about you and how you apprehend the world. It’s the first piece you see when you enter the Rennie Museum space and it sets the tone for all that is to come.  What you see says much about you.

The women, in the sculpture and the lockets, provide contrast and, depending on your race, hold a mirror to you. What is ‘other’ and what is ‘you’?

There was religious imagery in much of Marshall’s work elsewhere and I was particularly struck with the hearts that appeared in some of his paintings. I was reminded of the ‘sacred heart’, a key piece of religious iconography usually associated with Roman Catholicism although other religions also use the imagery.

It is a symbol of love and compassion although I’ve always associated it more with guilt. (My mother favoured the version featuring the heart pierced with a crown of thorns.)

Getting back to “What is ‘other’ and what is ‘you’?” Marshall seems to be hinting that after guilt and suffering, forgiveness is possible.

That’s my story and I’m sticking to it.

As for Marshall, he is a thoughtful artist asking some difficult questions. I hope you’ll get a chance to see his work at the Rennie Museum. As I write this, every tour through June is completely booked and first set of July tours is getting booked fast. You’d best keep an eagle eye on the Visit page.

ETA June18, 2018: Kerry James Marshall was in Vancouver and gave this talk about his work just prior to the show’s opening: https://vimeo.com/274179397 (It runs for roughly 1 hr. and 49 minutes.)

A dance with love and fear: the Yoko Ono exhibit and the Takashi Murakami exhibit in Vancouver (Canada)

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It seems Japanese artists are ‘having a moment’. There’s a documentary (Kusama—Infinity) about contemporary Japanese female artist, Yayoi Kusama, making the festival rounds this year (2018). Last year (2017), the British Museum mounted a major exhibition of Hokusai’s work (19th Century) and in 2017, the Metropolitan Museum of Art Costume Institute benefit was inspired by a Japanese fashion designer, “Rei Kawakubo/Comme des Garçons: Art of the In-Between.” (A curator at the Japanese Garden in Portland who had lived in Japan for a number of years mentioned to me during an interview that the Japanese have one word for art. There is no linguistic separation between art and craft.)

More recently, both Yoko Ono and Takashi Murakami have had shows in Vancouver, Canada. Starting with fear as I prefer to end with love, Murakami had a blockbuster show at the Vancouver Gallery.

Takashi Murakami: a dance with fear (and money too)

In the introductory notes at the beginning of the exhibit: “Takashi Murakami: The Octopus Eats Its own Leg,” it was noted that fear is one of Murakami’s themes. The first few pieces in the show had been made to look faded and brownish to the point where you had to work at seeing what was underneath the layers. The images were a little bit like horror films something’s a bit awry then scary and you don’t know what it is or how to deal with it.

After those images, the show opened up to bright, bouncy imagery commonly associated with Mrjakami’s work. However, if you look at them carefully, you’ll see many of these characters have big, pointed teeth. Also featured was a darkened room with two huge warriors.At a guess, I’d say they were 14 feet tall.

It  made for a disconcerting show with its darker themes usually concealed in bright, vibrant colour. Here’s an image promoting Murakami’s Vancouver birthday celebration and exhibit opening,

‘Give me the money, now!’ says a gleeful Takashi Murakami, whose expansive show is currently at the Vancouver Art Gallery. Photo by the VAG. [downloaded from https://thetyee.ca/Culture/2018/02/07/Takashi-Murakami-VAG/]

The colours and artwork shown in the marketing materials (I’m including the wrapping on the gallery itself) were  exuberant as was Murakami who acted as his own marketing material. I’m mentioning the money It’s very intimately and blatantly linked to Murakami’s art and work.  Dorothy Woodend in a Feb. 7, 2018 article for The Tyee puts it this way (Note: Link have been removed),

The close, almost incestuous relationship between art and money is a very old story. [emphasis mine] You might even say it is the only story at the moment.

You can know this, understand it to a certain extent, and still have it rear up and bite you on the bum. [emphasis mine] Such was my experience of attending the exhibition preview of Takashi Murakami’s The Octopus Eats Its Own Leg at the Vancouver Art Gallery.

The show is the first major retrospective of Murakami’s work in Canada, and the VAG has spared no expense in marketing the living hell out of the thing. From the massive cephalopod installed atop the dome of the gallery, to the ocean of smiling cartoon flowers, to the posters papering every inch of downtown Vancouver, it is in a word: huge.

If you don’t know much about Murakami the show is illuminating, in many different ways. Expansive in extremis, the exhibition includes more than 50 works that trace a path through the evolution of Murakami’s style and aesthetic, moving from his early dark textural paintings that blatantly ripped off Anselm Kiefer, to his later pop-art style (Superflat), familiar from Kanye West albums and Louis Vuitton handbags.

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… make no mistake, money runs underneath the VAG show like an engine [emphasis mine]. You can feel it in the air, thrumming with a strange radioactive current, like a heat mirage coming off the people madly snapping selfies next to the Kanye Bear sculpture.

The artist himself seems particularly aware of how much of a financial edifice surrounds the human impulse to make images. In an on-stage interview with senior VAG [Vancouver Art Gallery] curator Bruce Grenville during a media preview for the show, Murakami spoke plainly about the need for survival (a.k.a. money) [emphasis mine] that has propelled his career.

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Even the title of the show speaks to the notion of survival (from Woodend’s article; Note: Links have been removed),

The title of the show takes inspiration from Japanese folklore about a creature that sacrifices part of its own body so that the greater whole might survive. In the natural world, an octopus will chew off its own leg if there is an infection, and then regrow the missing limb. In the art world, the idea pertains to the practice of regurgitating (recycling) old ideas to serve the endless voracious demand for new stuff. “I don’t have the talent to come up with new ideas, so in order to survive, you have to eat your own body,” Murakami explains, citing his need for deadlines, and very bad economic conditions, that lead to a state of almost Dostoyevskyian desperation. “Please give me the money now!” he yells, and the assembled press laughs on cue.

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The artist’s responsibility to address larger issues like gender, politics and the environment was the final question posed during the Q&A, before the media were allowed into the gallery to see the work. Murakami took his time before answering, speaking through the nice female translator beside him. “Artists don’t have that much power in the world, but they can speak to the audience of the future, who look at the artwork from a certain era, like Goya paintings, and see not just social commentary, but an artistic point of view. The job of the artist is to dig deep into human beings.”

Which is a nice sentiment to be sure, but increasingly art is about celebrity and profit. Record-breaking shows like Alexander McQueen’s Savage Beauty and Rei Kawakubo/Comme des Garçons: Art of the In-Between demonstrated an easy appeal for both audiences and corporations. One of Murakami’s earlier exhibitions featured a Louis Vuitton pop-up shop as part of the show. Closer to home, the Fight for Beauty exhibit mixed fashion, art and development in a decidedly queasy-making mixture.

There is money to be made in culture of a certain scale, with scale being the operative word. Get big or get out.

Woodend also relates the show and some of the issues it raises to the local scene (Note: Links have been removed),

A recent article in the Vancouver Courier about the Oakridge redevelopment plans highlighted the relationship between development and culture in raw numbers: “1,000,000 square feet of retail, 2,600 homes for 6,000 people, office space for 3,000 workers, a 100,000-square-foot community centre and daycare, the city’s second-largest library, a performing arts academy, a live music venue for 3,000 people and the largest public art program in Vancouver’s history…”

Westbank’s Ian Gillespie [who hosted the Fight for Beauty exhibit] was quoted extensively, outlining the integration between the city and the developer. “The development team will also work with the city’s chief librarian to figure out the future of the library, while the 3,000-seat music venue will create an ‘incredible music scene.’” The term “cultural hub” also pops up so many times it’s almost funny, in a horrifying kind of way.

But bigness often squeezes out artists and musicians who simply can’t compete. Folk who can’t fill a 3,000-seat venue, or pack in thousands of visitors, like the Murakami show, are out of luck.

Vancouver artists, who struggle to survive in the city and have done so for quite some time, were singularly unimpressed with the Oakridge development proposal. Selina Crammond, a local musician and all-around firebrand, summed up the divide in a few eloquent sentences: “I mean really, who is going to make up this ‘incredible music scene’ and fill all of these shiny new venues? Many of my favourite local musicians have already moved away from Vancouver because they just can’t make it work. Who’s going to pay the musicians and workers? Who’s going to pay the large ticket prices to be able to maintain these spaces? I don’t think space is the problem. I think affordability and distribution of wealth and funding are the problems artists and arts workers are facing.”

The stories continue to pop up, the most recent being the possible sale and redevelopment of the Rio Theatre. The news sparked an outpouring of anger, but the story is repeated so often in Vancouver, it has become something of a cliché. You need only to look at the story of the Hollywood Theatre for a likely ending to the saga.

Which brings me back around to the Murakami exhibit. To be perfectly frank, the show is incredible and well-worth visiting. I enjoyed every minute of wandering through it taking in the sheer expanse of mind-boggling, googly-eyed detail. I would urge you to attend, if you can afford it. But there’s the rub. I was there for free, and general admission to the VAG is $22.86. This may not seem like a lot, but in a city where people can barely make rent, culture becomes the purview of them that can afford it.

The City of Vancouver recently launched its Creative Cities initiative to look at issues of affordability, diversity and gentrification.

We shall see if anything real emerges from the process. But in the meantime, Vancouver artists might have to eat their own legs simply to survive. [Tyee]

Survival issues and their intimate companions, fear, are clearly a major focus for Murakami’s art.

For the curious, the Vancouver version of the Murakami retrospective show was held from February 3 – May 6, 2018. There are still some materials about the show available online here.

Yoko Ono and the power of love (and maybe money, too)

More or less concurrently with the Murakami exhibition, the Rennie Museum (formerly Rennie Collection), came back from a several month hiatus to host a show featuring Yoko Ono’s “Mend Piece.”

From a Rennie Museum (undated) press release,

Rennie Museum is pleased to present Yoko Ono’s MEND PIECE, Andrea Rosen Gallery, New York City version (1966/2015). Illustrating Ono’s long standing artistic quest in social activism and world peace, this instructional work will transform the historic Wing Sang building into an intimate space for creative expression and bring people together in an act of collective healing and meditation. The installation will run from March 1 to April 15, 2018.

First conceptualized in 1966, the work immerses the visitor in a dream-like state. Viewers enter into an all-white space and are welcomed to take a seat at the table to reassemble fragments of ceramic coffee cups and saucers using the provided twine, tape, and glue. Akin to the Japanese philosophy of Wabi-sabi, an embracing of the flawed or imperfect, Mend Piece encourages the participant to transform broken fragments into an object that prevails its own violent rupture. The mended pieces are then displayed on shelves installed around the room. The contemplative act of mending is intended to promote reparation starting within one’s self and community, and bridge the gap created by violence, hatred, and war. In the words of Yoko Ono herself, “Mend with wisdom, mend with love. It will mend the earth at the same time.”

The installation of MEND PIECE, Andrea Rosen Gallery, New York City version at Rennie Museum will be accompanied by an espresso bar, furthering the notions of community and togetherness.

Yoko Ono (b. 1933) is a Japanese conceptual artist, musician, and peace activist pioneering feminism and Fluxus art. Her eclectic oeuvre of performance art, paintings, sculptures, films and sound works have been shown at renowned institutions worldwide, with recent exhibitions at The Museum of Modern Art, New York; Copenhagen Contemporary, Copenhagen; Museum of Contemporary Art, Tokyo; and Museo de Arte Latinoamericano de Buenos Aires. She is the recipient of the 2005 IMAJINE Lifetime Achievement Award and the 2009 Venice Biennale Golden Lion for Lifetime Achievement, among other distinctions. She lives and works in New York City.

While most of the shows have taken place over two, three, or four floors, “Mend Piece” was on the main floor only,

Courtesy: Rennie Museum

There was another “Mend Piece” in Canada, located at the Gardiner Museum and part of a larger show titled: “The Riverbed,” which ran from February 22 to June 3, 2018. Here’s an image of one of the Gardiner Museum “Mend” pieces that was featured in a March 7, 2018 article by Sonya Davidson for the Toronto Guardian,

Yoko Ono, Mend Piece, 1966 / 2018, © Yoko Ono. Photo: Tara Fillion Courtesy: Toronto Guardian

Here’s what Davidson had to say about the three-part installation, “The Riverbed,”

I’m sitting  on one of the cushions placed on the floor watching the steady stream of visitors at Yoko Ono’s exhibition The Riverbed at the Gardiner Museum. The room is airy and bright but void of  colours yet it’s vibrant and alive in a calming way. There are three distinct areas in this exhibition: Stone Piece, Line Piece and Mend Piece. From what I’ve experienced in Ono’s previous exhibitions, her work encourages participation and is inclusive of everyone. She has the idea. She encourages us to  go collaborate with her. Her work is describe often as  redirecting our attention to ideas, instead of appearances.

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Mend Piece is the one I’m most familiar with. It was part of her exhibition I visited in Reykjavik [Iceland]. Two large communal tables are filled with broken ceramic pieces and mending elements. Think glue, string, and tape.  Instructions from Ono once again are simple but with meaning. Take the pieces that resonate with you and mend them as you desire. You’re encourage [sic] to leave it in the communal space for everyone to experience what you’ve experienced. It reminded me of her work decades ago where she shattered porcelain vases, and people invited people to take a piece with them. But then years later she collected as many back and mended them herself. Part contemporary with a nod to the traditional Japanese art form of Kintsugi – fixing broken pottery with gold and the philosophy of nothing is ever truly broken. The repairs made are part of the history and should be embraced with honour and pride.

The experience at the Rennie was markedly different . I recommend reading both Davidson’s piece (includes many embedded images) in its entirety to get a sense for how different and this April 7, 2018 article by Jenna Moon for The Star regarding the theft of a stone from The Riverbed show at the Gardiner,

A rock bearing Yoko Ono’s handwriting has been stolen from the Gardiner Museum, Toronto police say. The theft reportedly occurred around 5:30 p.m. on March 12.

The rock is part of an art exhibit featuring Ono, where patrons can meditate using several river rocks. The stone is inscribed with black ink, and reads “love yourself” in block letters. It is valued at $17,500 (U.S.), [emphasis mine] Toronto police media officer Gary Long told the Star Friday evening.

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As far as I can tell, they still haven’t found the suspect who was described as a woman between the ages of 55 and 60. However the question that most interests me is how did they arrive at a value for the stone? Was it a case of assigning a value to the part of the installation with the stones and dividing that value by the number of stones? Yoko Ono may focus her art on social activism and peace but she too needs money to survive. Moving on.

Musings on ‘mend’

Participating in “Mend Piece” at the Rennie Museum was revelatory. It was a direct experience of the “traditional Japanese art form of Kintsugi – fixing broken pottery with gold and the philosophy of nothing is ever truly broken.” So often art is at best a tertiary experience for the viewer. The artist has the primary experience producing the work and the curator has the secondary experience of putting the show together.

For all the talk about interactive installations and pieces, there are few that truly engage the viewer with the piece. I find this rule applies: the more technology, the less interactivity.

“Mend” insisted on interactivity. More or less. I went with a friend and sat beside the one person in the group who didn’t want to talk to anyone. And she wasn’t just quiet, you could feel the “don’t talk to me” vibrations pouring from every one of her body parts.

The mending sessions were about 30 minutes long and, as Davidson notes, you had string, two types of glue, and twine. For someone with any kind of perfectionist tendencies (me) and a lack of crafting skills (me), it proved to be a bit of a challenge, especially with a semi-hostile person beside me. Thank goodness my friend was on the other side.

Adding to my travails was the gallery assistant (a local art student) who got very anxious and hovered over me as I attempted and failed to set my piece on a ledge in the room (twice). She was very nice and happy to share, without being intrusive, information about Yoko Ono and her work while we were constructing our pieces. I’m not sure what she thought was going to happen when I started dropping things but her hovering brought back memories of my adolescence when shopkeepers would follow me around their store.

Most of my group had finished and even though there was still time in my session, the next group rushed in and took my seat while I failed for the second time to place my piece. I stood for my third (and thankfully successful) repair attempt.

At that point I went to the back where more of the “Mend” communal experience awaited. Unfortunately, the coffee bar’s (this put up especially for the show) espresso machine was not working. There was some poetry on the walls and a video highlighting Yoko Ono’s work over the years and the coffee bar attendant was eager to share (but not intrusively so) some information about Yoko and her work.

As I stated earlier, it was a revelatory experience. First, It turned out my friend had been following Yoko’s work since before the artist had hooked up with John Lennon and she was able to add details to the attendants’ comments.

Second, I didn’t expect was a confrontation with the shards of my past and personality. In essence, mending myself and, hopefully, more. There was my perfectionism, rejection by the unfriendly tablemate, my emotional response (unspoken) to the hypervigilant gallery assistant, having my seat taken from me before the time was up, and the disappointment of the coffee bar. There was also a rediscovery of my friend, a friendly tablemate who made a beautiful object (it looked like a bird), the helpfulness of both the gallery assistants, Yoko Ono’s poetry, and a documentary about the remarkable Yoko.

All in all, it was a perfect reflection of imperfection (wabi-sabi), brokenness, and wounding in the context of repair (Kintsugi)/healing.

Thank you, Yoko Ono.

For anyone in Vancouver who feels they missed out on the experience, there are some performances of “Perfect Imperfections: The Art of a Messy Life” (comedy, dance, and live music) at Vancity Culture Lab at The Cultch from June 14 – 16, 2018. You can find out more here.

The moment

It certainly seems as if there’s a great interest in Japanese art, if you live in Vancouver (Canada), anyway. The Murakami show was a huge success for the Vancouver Art Gallery. As for Yoko Ono, the Rennie Museum extended the exhibit dates due to demand. Plus, the 2018 – 2020 version of the Vancouver Biennale is featuring (from a May 29, 2018 Vancouver Biennale news release),

… Yoko Ono with its 2018 Distinguished Artist Award, a recognition that coincides with reissuing the acclaimed artist’s 2007 Biennale installation, “IMAGINE PEACE,” marshalled at this critical time to re-inspire a global consciousness towards unity, harmony, and accord. Yoko Ono’s project exemplifies the Vancouver Biennale’s mission for diverse communities to gain access, visibility and representation.

The British Museum’s show (May 25 – August 13, 2017), “Hokusai’s Great Wave,” was seen in Vancouver at a special preview event in May 2017 at a local movie house, which was packed.

The documentary film festival, DOXA (Vancouver) closed its 2018 iteration with the documentary about Yayoi Kusama. Here’s more about her from a May 9, 2018 article by Janet Smith for the Georgia Straight,

Amid all the dizzying, looped-and-dotted works that American director Heather Lenz has managed to capture in her new documentary Kusama—Infinity, perhaps nothing stands out so much as images of the artist today in her Shinjuku studio.

Interviewed in the film, the 89-year-old Yayoi Kusama sports a signature scarlet bobbed anime wig and hot-pink polka-dotted dress, sitting with her marker at a drawing table, and set against the recent creations on her wall—a sea of black-and-white spots and jaggedy lines.

“The boundary between Yayoi Kusama and her art is not very great,” Lenz tells the Straight from her home in Orange County. “They are one and the same.”

It was as a young student majoring in art history and fine art that Lenz was first drawn to Kusama—who stood out as one of few female artists in her textbooks. She saw an underappreciated talent whose avant-pop works anticipated Andy Warhol and others. And as Lenz dug deeper into the artist’s story, she found a woman whose struggles with a difficult childhood and mental illness made her achievements all the more remarkable.

Today, Kusama is one of the world’s most celebrated female artists, her kaleidoscopic, multiroom show Infinity Mirrors drawing throngs of visitors to galleries like the Art Gallery of Ontario and the Seattle Art Museum over the past year. But when Lenz set out to make her film 17 long years ago, few had ever heard of Kusama.

…

I am hopeful that this is a sign that the Vancouver art scene is focusing more attention to the west, to Asia. Quite frankly, it’s about time.

As a special treat, here’s a ‘Yoko Ono tribute’ from the Bare Naked Ladies,

Dance!

Psst: secret marriage … Buckyballs and Graphene get together!

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A March 1, 2018 news item on Nanowerk announces  a new coupling,

Scientists combined buckyballs, [also known as buckminsterfullerenes, fullerenes, or C60] which resemble tiny soccer balls made from 60 carbon atoms, with graphene, a single layer of carbon, on an underlying surface. Positive and negative charges can transfer between the balls and graphene depending on the nature of the surface as well as the structural order and local orientation of the carbon ball. Scientists can use this architecture to develop tunable junctions for lightweight electronic devices.

The researchers have made this illustration of their work available,

Researchers are developing new, lightweight electronics that rapidly conduct electricity by covering a sheet of carbon (graphene) with buckyballs. Electricity is the flow of electrons. On these lightweight structures, electrons as well as positive holes (missing electrons) transfer between the balls and graphene. The team showed that the crystallinity and orientation of the balls, as well as the underlying layer, affected this charge transfer. The top image shows a calculation of the charge density for a specific orientation of the balls on graphene. The blue represents positive charges, while the red is negative. The bottom image shows that the balls are in a close-packed structure. The bright dots correspond to the projected images of columns of buckyball molecules. Courtesy: US Department of Energy Office of Science

A February 28, 2018 US Department of Energy (DoE) Office of Science news release, which originated the news item, provides more detail,

The Impact

Fast-moving electrons and their counterpart, holes, were preserved in graphene with crystalline buckyball overlayers. Significantly, the carbon ball provides charge transfer to the graphene. Scientists expect the transfer to be highly tunable with external voltages. This marriage has ramifications for smart electronics that run longer and do not break as easily, bringing us closer to sensor-embedded smart clothing and robotic skin.

Summary

Charge transfer at the interface between dissimilar materials is at the heart of almost all electronic technologies such as transistors and photovoltaic devices. In this study, scientists studied charge transfer at the interface region of buckyball molecules deposited on graphene, with and without a supporting substrate, such as hexagonal boron nitride. They employed ab initio density functional theory with van der Waals interactions to model the structure theoretically. Van der Waals interactions are weak connections between neutral molecules. The team used high-resolution transmission electron microscopy and electronic transport measurements to characterize experimentally the properties of the interface. The researchers observed that charge transfer between buckyballs and the graphene was sensitive to the nature of the underlying substrate, in addition, to the crystallinity and local orientation of the buckyballs. These studies open an avenue to devices where buckyball layers on top of graphene can serve as electron acceptors and other buckyball layers as electron donors. Even at room temperature, buckyball molecules were orientationally locked into position. This is in sharp contrast to buckyball molecules in un-doped bulk crystalline configurations, where locking occurs only at low temperature. High electron and hole mobilities are preserved in graphene with crystalline buckyball overlayers. This finding has ramifications for the development of organic high-mobility field-effect devices and other high mobility applications.

Here’s a link to and a citation for the paper,

Molecular Arrangement and Charge Transfer in C60 /Graphene Heterostructures by Claudia Ojeda-Aristizabal, Elton J. G. Santos, Seita Onishi, Aiming Yan, Haider I. Rasool, Salman Kahn, Yinchuan Lv, Drew W. Latzke, Jairo Velasco Jr., Michael F. Crommie, Matthew Sorensen, Kenneth Gotlieb, Chiu-Yun Lin, Kenji Watanabe, Takashi Taniguchi, Alessandra Lanzara, and Alex Zettl. ACS Nano, 2017, 11 (5), pp 4686–4693 DOI: 10.1021/acsnano.7b00551 Publication Date (Web): April 24, 2017

Copyright © 2017 American Chemical Society

This paper is behind a paywall.

Nanomushroom sensors

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Schematic illustration of cells (blue mountain-like shapes) on top of nanoscale mushroom-like structures with silicone dioxide stems and gold caps, which have the potential to detect cell proliferation in real-time. Courtesy: OIST

The nanomushroom sensors depicted in the above illustration and announced in a February 23, 2018 news item on Nanowerk probably aren’t edible but they certainly make up for that deficiency with other properties,

A small rectangle of pink glass, about the size of a postage stamp, sits on Professor Amy Shen’s desk. Despite its outwardly modest appearance, this little glass slide has the potential to revolutionize a wide range of processes, from monitoring food quality to diagnosing diseases.

The slide is made of a ‘nanoplasmonic’ material — its surface is coated in millions of gold nanostructures, each just a few billionths of a square meter in size. Plasmonic materials absorb and scatter light in interesting ways, giving them unique sensing properties. Nanoplasmonic materials have attracted the attention of biologists, chemists, physicists and material scientists, with possible uses in a diverse array of fields, such as biosensing, data storage, light generation and solar cells.

A February 23, 2018 Okinawa Institute of Science and Technology Graduate University (OIST) press release (also on EurekAlert), which originated the news item, provides more detail,

In several recent papers, Prof. Shen and colleagues at the Micro/Bio/Nanofluidics Unit at the Okinawa Institute of Science and Technology (OIST), described their creation of a new biosensing material that can be used to monitor processes in living cells.

“One of the major goals of nanoplasmonics is to search for better ways to monitor processes in living cells in real time,” says Prof. Shen. Capturing such information can reveal clues about cell behavior, but creating nanomaterials on which cells can survive for long periods of time yet don’t interfere with the cellular processes being measured is a challenge, she explains.

Counting Dividing Cells

One of the team’s new biosensors is made from a nanoplasmonic material that is able to accommodate a large number of cells on a single substrate and to monitor cell proliferation, a fundamental process involving cell growth and division, in real time. Seeing this process in action can reveal important insights into the health and functions of cells and tissues.

Researchers in OIST’s Micro/Bio/Nanofluidics Unit described the sensor in a study recently published in the journal Advanced Biosystems [citation and link follow this press release].

The most attractive feature of the material is that it allows cells to survive over long time periods. “Usually, when you put live cells on a nanomaterial, that material is toxic and it kills the cells,” says Dr. Nikhil Bhalla, a postdoctoral researcher at OIST and first author of the paper. “However, using our material, cells survived for over seven days.” The nanoplasmonic material is also highly sensitive: It can detect an increase in cells as small as 16 in 1000 cells.

The material looks just like an ordinary pieces of glass. However, the surface is coated in tiny nanoplasmonic mushroom-like structures, known as nanomushrooms, with stems of silicon dioxide and caps of gold. Together, these form a biosensor capable of detecting interactions at the molecular level.

The biosensor works by using the nanomushroom caps as optical antennae. When white light passes through the nanoplasmonic slide, the nanomushrooms absorb and scatter some of the light, changing its properties. The absorbance and scattering of light is determined by the size, shape and material of the nanomaterial and, more importantly, it is also affected by any medium in close proximity to the nanomushroom, such as cells that have been placed on the slide. By measuring how the light has changed once it emerges through the other side of the slide, the researchers can detect and monitor processes occurring on the sensor surface, such as cell division.

“Normally, you have to add labels, such as dyes or molecules, to cells, to be able to count dividing cells,” says Dr. Bhalla. “However, with our method, the nanomushrooms can sense them directly.”

Scaling Up

This work builds on a new method, developed by scientists at the Micro/Bio/Nanofluidics Unit at OIST, for fabricating nanomushroom biosensors. The technique was published in the journal ACS Applied Materials and Interfaces in December 2017.

Producing large-scale nanoplasmonic materials is challenging because it is difficult to ensure uniformity across the entire material surface. For this reason, biosensors for routine clinical examinations, such as disease testing, are still lacking.

In response to this problem, the OIST researchers developed a novel printing technique to create large-scale nanomushroom biosensors. With their method, they were able to develop a material consisting of approximately one million mushroom-like structures on a 2.5cm by 7.5cm silicon dioxide substrate.

“Our technique is like taking a stamp, covering it with ink made from biological molecules, and printing onto the nanoplasmonic slide,” says Shivani Sathish, a PhD student at OIST and co-author of the paper. The biological molecules increase the sensitivity of the material, meaning it can sense extremely low concentrations of substances, such as antibodies, and thus potentially detect diseases in their earliest stages.

“Using our method, it is possible to create a highly sensitive biosensor that can detect even single molecules,” says Dr. Bhalla, first author of the paper.

Plasmonic and nanoplasmonic sensors offer important tools for many fields, from electronics to food production to medicine. For example, in December 2017, second year Ph.D student Ainash Garifullina from the Unit developed a new plasmonic material for monitoring the quality of food products during the manufacturing process. The results were published in the journal Analytical Methods.

Prof. Shen and her unit say that, in the future, nanoplasmonic materials may even be integrated with emerging technologies, such as wireless systems in microfluidic devices, allowing users to take readings remotely and thereby minimizing the risk of contamination.

Here’s a link to and a citation for the paper,

Large-Scale Nanophotonic Structures for Long-Term Monitoring of Cell Proliferation by Nikhil Bhalla, Shivani Sathish, Abhishek Sinha, and Amy Q. Shen. Advanced Biosystems Vol. 2 Issue 2 DOI: 10.1002/adbi.201700258 Version of Record online: 19 JAN 2018

© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

This paper is behind a paywall.

Here’s a link to and a citation for the earlier paper,

Probing specific gravity in real-time with graphene oxide plasmonics by Ainash Garifullina, Nikhil Bhalla, and Amy Q. Shen. Anal. Methods 2018, 10, 290-297 DOI: 10.1039/C7AY02423A first published [online] on 06 Dec 2017

This paper is open access provided you have registered for a free account.

How does sticky tape make graphene?

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As I understand it, Andre Geim one of the two men (the other was Konstantin Novoselov) to first isolate graphene from a block of graphite by using sticky tape is not thrilled that it’s known in some quarters as the graphene sticky tape method. Still, the technique caught the imagination as Steve Connor’s March 18, 2013 article for the Independent made clear.

It seems scientists are still just as fascinated as anyone else as a February 27, 2018 news item for Nanowerk describes,

Scientists at UCL [University College London] have explained for the first time the mystery of why adhesive tape is so useful for graphene production.

The study, published in Advanced Materials (“Graphene–Graphene Interactions: Friction, Superlubricity, and Exfoliation”), used supercomputers to model the process through which graphene sheets are exfoliated from graphite, the material in pencils.

A February 26, 2018 UCL press release, which originated the news item, provides more detail,

There are various methods for exfoliating graphene, including the famous adhesive tape method developed by Nobel Prize winner Andre Geim. However little has been known until now about how the process of exfoliating graphene using sticky tape works.

Academics at UCL are now able to demonstrate how individual flakes of graphite can be exfoliated to make one atom thick layers. They also reveal that the process of peeling a layer of graphene demands 40% less energy than that of another common method called shearing. This is expected to have far reaching impacts for the commercial production of graphene.

“The sticky tape method works rather like peeling egg boxes apart with a vertical motion, it is easier than pulling one horizontally across another when they are neatly stacked,” explained Professor Peter Coveney, Director of the Centre for Computational Science (UCL Chemistry).

“If shearing, then you get held up by this egg carton configuration. But if you peel, you can get them apart much more easily. The polymethyl methacrylate adhesive on traditional sticky tape is ideal for picking up the edge of the graphene sheet so it can be lifted and peeled,” added Professor Coveney.

Graphite occurs naturally, its basic crystalline structure is stacks of flat sheets of strongly bonded carbon atoms in a honeycomb pattern. Graphite’s many layers are bound together by weak interactions and can easily slide large distances over one another with little friction due to their superlubricity.

The scientists at UCL simulated an experiment conducted in 2015 at Lawrence Berkeley Laboratory in Berkeley, California, which used a special microscope with atomic resolution to see how graphene flakes move around on a graphite surface.

The supercomputer’s results matched Berkeley’s observations showing that there is less movement when the graphene atoms neatly line up with the atoms below.

“Despite the vast amount of research carried out on graphene since its discovery, it is clear that until now our understanding of its behaviour on an atomic length scale was very poor,” explains PhD student Robert Sinclair (UCL Chemistry).

“The one reason above all others why the material is difficult to use is because it is hard to make. Even now, a dozen years after its discovery, companies have to apply sticky tape methods to pull it apart, as the Laureates did to uncover it; hardly a hi-tech and industrially simple process to implement. We’re now in a position to assist experimentalists to figure out how to prise it apart, or make it to order. That could have big cost implications for the emerging graphene industry,” said Professor Coveney.

Here’s a link to and a citation for the paper,

Graphene–Graphene Interactions: Friction, Superlubricity, and Exfoliation by Robert C. Sinclair, James L. Suter, and Peter V. Coveney. Advanced Materials DOI: 10.1002/adma.201705791 First published: 13 February 2018

This paper is open access.

‘Smart’ windows from Australia

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My obsession with smart windows has been lying dormant until now. This February 25, 2018 RMIT University (Australia) press release on EurekAlert has reawkened it,

Researchers from RMIT University in Melbourne Australia have developed a new ultra-thin coating that responds to heat and cold, opening the door to “smart windows”.

The self-modifying coating, which is a thousand times thinner than a human hair, works by automatically letting in more heat when it’s cold and blocking the sun’s rays when it’s hot.

Smart windows have the ability to naturally regulate temperatures inside a building, leading to major environmental benefits and significant financial savings.

Lead investigator Associate Professor Madhu Bhaskaran said the breakthrough will help meet future energy needs and create temperature-responsive buildings.

“We are making it possible to manufacture smart windows that block heat during summer and retain heat inside when the weather cools,” Bhaskaran said.

“We lose most of our energy in buildings through windows. This makes maintaining buildings at a certain temperature a very wasteful and unavoidable process.

“Our technology will potentially cut the rising costs of air-conditioning and heating, as well as dramatically reduce the carbon footprint of buildings of all sizes.

“Solutions to our energy crisis do not come only from using renewables; smarter technology that eliminates energy waste is absolutely vital.”

Smart glass windows are about 70 per cent more energy efficient during summer and 45 per cent more efficient in the winter compared to standard dual-pane glass.

New York’s Empire State Building reported energy savings of US$2.4 million and cut carbon emissions by 4,000 metric tonnes after installing smart glass windows. This was using a less effective form of technology.

“The Empire State Building used glass that still required some energy to operate,” Bhaskaran said. “Our coating doesn’t require energy and responds directly to changes in temperature.”

Co-researcher and PhD student Mohammad Taha said that while the coating reacts to temperature it can also be overridden with a simple switch.

“This switch is similar to a dimmer and can be used to control the level of transparency on the window and therefore the intensity of lighting in a room,” Taha said. “This means users have total freedom to operate the smart windows on-demand.”

Windows aren’t the only clear winners when it comes to the new coating. The technology can also be used to control non-harmful radiation that can penetrate plastics and fabrics. This could be applied to medical imaging and security scans.

Bhaskaran said that the team was looking to roll the technology out as soon as possible.

“The materials and technology are readily scalable to large area surfaces, with the underlying technology filed as a patent in Australia and the US,” she said.

The research has been carried out at RMIT University’s state-of-the-art Micro Nano Research Facility with colleagues at the University of Adelaide and supported by the Australian Research Council.

…

How the coating works

The self-regulating coating is created using a material called vanadium dioxide. The coating is 50-150 nanometres in thickness.

At 67 degrees Celsius, vanadium dioxide transforms from being an insulator into a metal, allowing the coating to turn into a versatile optoelectronic material controlled by and sensitive to light.

The coating stays transparent and clear to the human eye but goes opaque to infra-red solar radiation, which humans cannot see and is what causes sun-induced heating.

Until now, it has been impossible to use vanadium dioxide on surfaces of various sizes because the placement of the coating requires the creation of specialised layers, or platforms.

The RMIT researchers have developed a way to create and deposit the ultra-thin coating without the need for these special platforms – meaning it can be directly applied to surfaces like glass windows.

Here’s a link to and a citation for the paper,

Insulator–metal transition in substrate-independent VO2 thin film for phase-change device by Mohammad Taha, Sumeet Walia, Taimur Ahmed, Daniel Headland, Withawat Withayachumnankul, Sharath Sriram, & Madhu Bhaskaran. Scientific Reportsvolume 7, Article number: 17899 (2017) doi:10.1038/s41598-017-17937-3 Published online: 20 December 2017

This paper is open access.

For anyone interested in more ‘smart’ windows, you can try that search term or ‘electrochromic’, ‘photochromic’, and ‘thermochromic’ , as well.

Nanomaterials the SUN (Sustainable Nanotechnologies) project sunsets, finally and the Belgians amend their registry

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Health, safety, and risks have been an important discussion where nanotechnology is concerned. The sense of urgency and concern has died down somewhat but scientists and regulators continue with their risk analysis.

SUN (Sustainable Nanotechnologies) project

Back in a December 7, 2016 posting I mentioned the Sustainable Nanotechnologies (SUN) project and its imminent demise in 2017. A February 26, 2018 news item on Nanowerk announces a tool developed by SUN scientists and intended for current use,

Over 100 scientists from 25 research institutions and industries in 12 different European Countries, coordinated by the group of professor Antonio Marcomini from Ca’ Foscari University of Venice, have completed one of the first attempts to understand the risks nanomaterials carry throughout their life-cycle, starting from their fabrication and ending in being discarded or recycled.

From nanoscale silver to titanium dioxide for air purification, the use of nanomaterials of high commercial relevance proves to have clear benefits as it attracts investments, and raises concerns. ‘Nano’ sized materials (a nanometre is one millionth of a millimetre) could pose environmental and health risks under certain conditions. The uncertainties and insufficient scientific knowledge could slow down innovation and economic growth.

How do we evaluate these risks and take the appropriate preventative measures? The answer comes from the results of the Sustainable Nanotechnologies Project (SUN), which has been given 13 million euros of funding from the European Commission.

Courtesy: SUN Project

A February 26, 2018 Ca’ Foscari University of Venice press release describes some of the SUN project’s last t initiatives including, https://sunds.gd/  or the ‘SUNDS; Decision support system for risk management of engineered nanomaterials and nano-enabled products’,

After 3 years of research in laboratories and in contact with industrial partners, the scientists have processed, tested and made available an online platform (https://sunds.gd/) that supports industries and control and regulating institutions in evaluating potential risks that may arise for the production teams, for the consumers and for the environment.

The goal is to understand the extent to which these risks are sustainable, especially in relation to the traditional materials available, and to take the appropriate preventative measures. Additionally, this tool allows us to compare risk reduction costs with the benefits generated by this innovative product, while measuring its possible environmental impact.

Danail Hristozov, the project’s principal investigator from the Department of Environmental Sciences, Informatics and Statistics at Ca’ Foscari, commented: “The great amount of work done for developing and testing the methods and tools for evaluating and managing the risks posed by nanomaterials has not only generated an enormous amount of new scientific data and knowledge on the potential dangers of different types of nanomaterials, but has also resulted in key discoveries on the interactions between nanomaterials and biological or ecological systems and on their diffusion, on how they work and on their possible adverse consequences. These results, disseminated in over 140 research papers, have been immediately taken up by industries and regulators and will inevitably have great impact on developing safer and more sustainable nanotechnologies and on regulating their risks”.”.

The SUN project has also composed a guide for the safest products and processes, published on its website: www.sun.fp7.eu.

Studied Materials

Scientists have focused their research on specific materials and their us, in order to analyse the entire life cycle of the products. Two of the best-known were chosen: nanoscale silver that is used in textiles, and multi-walled carbon nanotubes that is used in marine coatings and automotive parts. Less known materials that are of great relevance for their use were also included: car pigments and silica anticaking agents used by food industry.

Lastly, SUN included nanomaterials of high commercial value which are extremely innovative: Nitrogen doped Titanium Dioxide for air purification is a new product enabled by SUN and exploited by the large colour ceramics company Colorobbia. The copper based coating and impregnation for wood protection has been re-oriented based on SUN safety assessment, and the Tungsten Carbide based coatings for paper mills is marketed based on SUN results.

You can find out more about the SUN project here and about ‘SUNDS; Decision support system for risk management of engineered nanomaterials and nano-enabled products’ here.

Belgium’s nanomaterials reigster

A February 26, 2018 Nanowerk Spotlight article by Anthony Bochon has a   rather acerbic take on Belgium’s efforts to regulate nanomaterials with a national register,

In Alice’s Adventures in Wonderland, the White Rabbit keeps saying “Oh dear! Oh dear! I shall be too late.” The same could have been said by the Belgian federal government when it adopted the Royal Decree of 22nd December 2017, published in the annexes of the Belgian Official Gazette of 15th January 2018 (“Amending Royal Decree”), whose main provisions retroactively enter into force on 31st December 2016. …

The Belgian federal government unnecessarily delayed the adoption of the Amending Royal Decree until December 2017 and published it only mid-January 2018. It creates legal uncertainty where it should have been avoided. The Belgian nanomaterials register (…) symbolizes a Belgian exceptionalism in the small world of national nanomaterials registers. Unlike France, Denmark and Sweden, Belgium decided from the very beginning to have three different deadlines for substances, mixtures and articles.

In an already fragmented regulatory landscape (with 4 EU Member States having their own national nanomaterials register and 24 EU Member States which do not have such registration requirements), the confusion around the deadline for the registration of mixtures in Belgium does not allow the addressees of the legal obligations to comply with them.

…

Even though failure to properly register substances – and now mixtures – within the Belgian nanomaterials register exposes the addressees of the obligation to criminal penalties, the function of the register remains purely informational.

The data collected through the registration was meant to be used to identify the presence of manufactured nanomaterials on the Belgian market, with the implicit objective of regulating the exposure of workers and consumers to these nanomaterials. The absence of entry into force of the provisions relating to the registration of articles is therefore incoherent and should question the relevance of the whole Belgian registration system.

…

Taking into account the author’s snarkiness, Belgium seems to have adopted (knowingly or unknowingly) a chaotic approach to registering nanomaterials.  For anyone interesting in the Belgian’ nanoregister’, there’s this September 3, 2014 posting featuring another Anthony Bochon article on the topic and for anyone interested in Bochon’s book, there’s this August 15, 2014 posting (Note: his book, ‘Nanotechnology Law & Guidelines: A Practical Guide for the Nanotechnology Industries in Europe’, seems to have been updated [there is a copyright date of 2019 in the bibliographic information on the publisher’s website]).

Wearable technology: two types of sensors one from the University of Glasgow (Scotland) and the other from the University of British Columbia (Canada)

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Sometimes it’s good to try and pull things together.

University of Glasgow and monitoring chronic conditions

A February 23, 2018 news item on phys.org describes the latest wearable tech from the University of Glasgow,

A new type of flexible, wearable sensor could help people with chronic conditions like diabetes avoid the discomfort of regular pin-prick blood tests by monitoring the chemical composition of their sweat instead.

In a new paper published in the journal Biosensors and Bioelectronics, a team of scientists from the University of Glasgow’s School of Engineering outline how they have built a stretchable, wireless system which is capable of measuring the pH level of users’ sweat.

A February 22, 2018 University of Glasgow press release, which originated the news item, expands on the theme,

Ravinder Dahiya

 Courtesy: University of Glasgow

 

Sweat, like blood, contains chemicals generated in the human body, including glucose and urea. Monitoring the levels of those chemicals in sweat could help clinicians diagnose and monitor chronic conditions such as diabetes, kidney disease and some types of cancers without invasive tests which require blood to be drawn from patients.

However, non-invasive, wearable systems require consistent contact with skin to offer the highest-quality monitoring. Current systems are made from rigid materials, making it more difficult to ensure consistent contact, and other potential solutions such as adhesives can irritate skin. Wireless systems which use Bluetooth to transmit their information are also often bulky and power-hungry, requiring frequent recharging.

The University of Glasgow team’s new system is built around an inexpensively-produced sensor capable of measuring pH levels which can stretch and flex to better fit the contours of users’ bodies. Made from a graphite-polyurethane composite and measuring around a single square centimetre, it can stretch up to 53% in length without compromising performance. It will also continue to work after being subjected to flexes of 30% up to 500 times, which the researchers say will allow it to be used comfortably on human skin with minimal impact on the performance of the sensor.

The sensor can transmit its data wirelessly, and without external power, to an accompanying smartphone app called ‘SenseAble’, also developed by the team. The transmissions use near-field communication, a data transmission system found in many current smartphones which is used most often for smartphone payments like ApplePay, via a stretchable RFID antenna integrated into the system – another breakthrough innovation from the research team.

The smartphone app allows users to track pH levels in real time and was demonstrated in the lab using a chemical solution created by the researchers which mimics the composition of human sweat.

The research was led by Professor Ravinder Dahiya, head of the University of Glasgow’s School of Engineering’s Bendable Electronics and Sensing Technologies (BEST) group.

Professor Dahiya said: “Human sweat contains much of the same physiological information that blood does, and its use in diagnostic systems has the significant advantage of not needing to break the skin in order to administer tests.

“Now that we’ve demonstrated that our stretchable system can be used to monitor pH levels, we’ve already begun additional research to expand the capabilities of the sensor and make it a more complete diagnostic system. We’re planning to add sensors capable of measuring glucose, ammonia and urea, for example, and ultimately we’d like to see a system ready for market in the next few years.”

The team’s paper, titled ‘Stretchable Wireless System for Sweat pH Monitoring’, is published in Biosensors and Bioelectronics. The research was supported by funding from the European Commission and the Engineering and Physical Sciences Research Council (EPSRC).

Here’s a link to and a citation for the paper,

Stretchable wireless system for sweat pH monitoring by Wenting Dang, Libu Manjakkal, William Taube Navaraj, Leandro Lorenzelli, Vincenzo Vinciguerra. Biosensors and Bioelectronics Volume 107, 1 June 2018, Pages 192–202 [Available online February 2018] https://doi.org/10.1016/j.bios.2018.02.025

This paper is behind a paywall.

University of British Columbia (UBC; Okanagan) and monitor bio-signals

This is a completely other type of wearable tech monitor, from a February 22, 2018 UBC news release (also on EurekAlert) by Patty Wellborn (A link has been removed),

Creating the perfect wearable device to monitor muscle movement, heart rate and other tiny bio-signals without breaking the bank has inspired scientists to look for a simpler and more affordable tool.

Now, a team of researchers at UBC’s Okanagan campus have developed a practical way to monitor and interpret human motion, in what may be the missing piece of the puzzle when it comes to wearable technology.

What started as research to create an ultra-stretchable sensor transformed into a sophisticated inter-disciplinary project resulting in a smart wearable device that is capable of sensing and understanding complex human motion, explains School of Engineering Professor Homayoun Najjaran.

The sensor is made by infusing graphene nano-flakes (GNF) into a rubber-like adhesive pad. Najjaran says they then tested the durability of the tiny sensor by stretching it to see if it can maintain accuracy under strains of up to 350 per cent of its original state. The device went through more than 10,000 cycles of stretching and relaxing while maintaining its electrical stability.

“We tested this sensor vigorously,” says Najjaran. “Not only did it maintain its form but more importantly it retained its sensory functionality. We have further demonstrated the efficacy of GNF-Pad as a haptic technology in real-time applications by precisely replicating the human finger gestures using a three-joint robotic finger.”

The goal was to make something that could stretch, be flexible and a reasonable size, and have the required sensitivity, performance, production cost, and robustness. Unlike an inertial measurement unit—an electronic unit that measures force and movement and is used in most step-based wearable technologies—Najjaran says the sensors need to be sensitive enough to respond to different and complex body motions. That includes infinitesimal movements like a heartbeat or a twitch of a finger, to large muscle movements from walking and running.

School of Engineering Professor and study co-author Mina Hoorfar says their results may help manufacturers create the next level of health monitoring and biomedical devices.

“We have introduced an easy and highly repeatable fabrication method to create a highly sensitive sensor with outstanding mechanical and electrical properties at a very low cost,” says Hoorfar.

To demonstrate its practicality, researchers built three wearable devices including a knee band, a wristband and a glove. The wristband monitored heartbeats by sensing the pulse of the artery. In an entirely different range of motion, the finger and knee bands monitored finger gestures and larger scale muscle movements during walking, running, sitting down and standing up. The results, says Hoorfar, indicate an inexpensive device that has a high-level of sensitivity, selectivity and durability.

Hoorfar and Najjaran are both members of the Okanagan node of UBC’s STITCH (SmarT Innovations for Technology Connected Health) Institute that creates and investigates advanced wearable devices.

The research, partially funded by the Natural Sciences and Engineering Research Council, was recently published in the Journal of Sensors and Actuators A: Physical.

Here’s a link to and a citation for the paper,

Low-cost ultra-stretchable strain sensors for monitoring human motion and bio-signals by Seyed Reza Larimi, Hojatollah Rezaei Nejad, Michael Oyatsi, Allen O’Brien, Mina Hoorfar, Homayoun Najjaran. Sensors and Actuators A: Physical Volume 271, 1 March 2018, Pages 182-191 [Published online February 2018] https://doi.org/10.1016/j.sna.2018.01.028

This paper is behind a paywall.

Final comments

The term ‘wearable tech’ covers a lot of ground. In addition to sensors, there are materials that harvest energy, detect poisons, etc.  making for a diverse field.

Announcing the ‘memtransistor’

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Yet another advance toward ‘brainlike’ computing (how many times have I written this or a variation thereof in the last 10 years? See: Dexter Johnson’s take on the situation at the end of this post): Northwestern University announced their latest memristor research in a February 21, 2018 news item on Nanowerk,

Computer algorithms might be performing brain-like functions, such as facial recognition and language translation, but the computers themselves have yet to operate like brains.

“Computers have separate processing and memory storage units, whereas the brain uses neurons to perform both functions,” said Northwestern University’s Mark C. Hersam. “Neural networks can achieve complicated computation with significantly lower energy consumption compared to a digital computer.”

A February 21, 2018 Northwestern University news release (also on EurekAlert), which originated the news item, provides more information about the latest work from this team,

In recent years, researchers have searched for ways to make computers more neuromorphic, or brain-like, in order to perform increasingly complicated tasks with high efficiency. Now Hersam, a Walter P. Murphy Professor of Materials Science and Engineering in Northwestern’s McCormick School of Engineering, and his team are bringing the world closer to realizing this goal.

The research team has developed a novel device called a “memtransistor,” which operates much like a neuron by performing both memory and information processing. With combined characteristics of a memristor and transistor, the memtransistor also encompasses multiple terminals that operate more similarly to a neural network.

Supported by the National Institute of Standards and Technology and the National Science Foundation, the research was published online today, February 22 [2018], in Nature. Vinod K. Sangwan and Hong-Sub Lee, postdoctoral fellows advised by Hersam, served as the paper’s co-first authors.

The memtransistor builds upon work published in 2015, in which Hersam, Sangwan, and their collaborators used single-layer molybdenum disulfide (MoS2) to create a three-terminal, gate-tunable memristor for fast, reliable digital memory storage. Memristor, which is short for “memory resistors,” are resistors in a current that “remember” the voltage previously applied to them. Typical memristors are two-terminal electronic devices, which can only control one voltage channel. By transforming it into a three-terminal device, Hersam paved the way for memristors to be used in more complex electronic circuits and systems, such as neuromorphic computing.

To develop the memtransistor, Hersam’s team again used atomically thin MoS2 with well-defined grain boundaries, which influence the flow of current. Similar to the way fibers are arranged in wood, atoms are arranged into ordered domains – called “grains” – within a material. When a large voltage is applied, the grain boundaries facilitate atomic motion, causing a change in resistance.

“Because molybdenum disulfide is atomically thin, it is easily influenced by applied electric fields,” Hersam explained. “This property allows us to make a transistor. The memristor characteristics come from the fact that the defects in the material are relatively mobile, especially in the presence of grain boundaries.”

But unlike his previous memristor, which used individual, small flakes of MoS2, Hersam’s memtransistor makes use of a continuous film of polycrystalline MoS2 that comprises a large number of smaller flakes. This enabled the research team to scale up the device from one flake to many devices across an entire wafer.

“When length of the device is larger than the individual grain size, you are guaranteed to have grain boundaries in every device across the wafer,” Hersam said. “Thus, we see reproducible, gate-tunable memristive responses across large arrays of devices.”

After fabricating memtransistors uniformly across an entire wafer, Hersam’s team added additional electrical contacts. Typical transistors and Hersam’s previously developed memristor each have three terminals. In their new paper, however, the team realized a seven-terminal device, in which one terminal controls the current among the other six terminals.

“This is even more similar to neurons in the brain,” Hersam said, “because in the brain, we don’t usually have one neuron connected to only one other neuron. Instead, one neuron is connected to multiple other neurons to form a network. Our device structure allows multiple contacts, which is similar to the multiple synapses in neurons.”

Next, Hersam and his team are working to make the memtransistor faster and smaller. Hersam also plans to continue scaling up the device for manufacturing purposes.

“We believe that the memtransistor can be a foundational circuit element for new forms of neuromorphic computing,” he said. “However, making dozens of devices, as we have done in our paper, is different than making a billion, which is done with conventional transistor technology today. Thus far, we do not see any fundamental barriers that will prevent further scale up of our approach.”

The researchers have made this illustration available,

Caption: This is the memtransistor symbol overlaid on an artistic rendering of a hypothetical circuit layout in the shape of a brain. Credit; Hersam Research Group

Here’s a link to and a citation for the paper,

Multi-terminal memtransistors from polycrystalline monolayer molybdenum disulfide by Vinod K. Sangwan, Hong-Sub Lee, Hadallia Bergeron, Itamar Balla, Megan E. Beck, Kan-Sheng Chen, & Mark C. Hersam. Nature volume 554, pages 500–504 (22 February 2018 doi:10.1038/nature25747 Published online: 21 February 2018

This paper is behind a paywall.

The team’s earlier work referenced in the news release was featured here in an April 10, 2015 posting.

Dexter Johnson

From a Feb. 23, 2018 posting by Dexter Johnson on the Nanoclast blog (on the IEEE [Institute of Electrical and Electronics Engineers] website),

…

While this all seems promising, one of the big shortcomings in neuromorphic computing has been that it doesn’t mimic the brain in a very important way. In the brain, for every neuron there are a thousand synapses—the electrical signal sent between the neurons of the brain. This poses a problem because a transistor only has a single terminal, hardly an accommodating architecture for multiplying signals.

Now researchers at Northwestern University, led by Mark Hersam, have developed a new device that combines memristors—two-terminal non-volatile memory devices based on resistance switching—with transistors to create what Hersam and his colleagues have dubbed a “memtransistor” that performs both memory storage and information processing.

This most recent research builds on work that Hersam and his team conducted back in 2015 in which the researchers developed a three-terminal, gate-tunable memristor that operated like a kind of synapse.

While this work was recognized as mimicking the low-power computing of the human brain, critics didn’t really believe that it was acting like a neuron since it could only transmit a signal from one artificial neuron to another. This was far short of a human brain that is capable of making tens of thousands of such connections.

“Traditional memristors are two-terminal devices, whereas our memtransistors combine the non-volatility of a two-terminal memristor with the gate-tunability of a three-terminal transistor,” said Hersam to IEEE Spectrum. “Our device design accommodates additional terminals, which mimic the multiple synapses in neurons.”

Hersam believes that these unique attributes of these multi-terminal memtransistors are likely to present a range of new opportunities for non-volatile memory and neuromorphic computing.

…

If you have the time and the interest, Dexter’s post provides more context,