Tag Archives: The Netherlands

A glacier in the desert

Strictly speaking this is not nano but it is interesting and artistic too. A Dutch artist is planning to create a sculpture that will make ice in the desert. From the Nov. 7, 2011 news item on physorg.com,

“You have to open the borders of your thinking,” he [Ap Verheggen] said, in his apartment surrounded by his works. “To make ice in the desert is breaking down the border, and that is opening a new world.”

Verheggen’s giant sculpture is so far only a sketch and a series of charts in a laboratory in Zoetermeer, near his home in The Hague. Cofely, a refrigeration company that makes ice rinks and custom-designed cooling units for food storage, is testing the principles of creating ice in desert conditions.

Scientist Andras Szollosi-Nagi says Verheggen’s work falls at the crossroads of art, environment and science. “It’s an amazing piece, it’s very unusual and that makes it very exciting.”

In Zoetermeer, engineers have produced a 10-centimeter (4-inch)-thick layer of ice on a slab of aluminum inside a shipping container-sized box that simulates desert conditions, with the temperature set at 30 Celsius (86 Fahrenheit) and plans to crank it up to 50C (122F). A humidifier provides the moisture, and a fan is directed at the ice like a desert breeze, resulting in a pool of water dripping off the surface of the ice sheet even as it thickens.

The company is using off-the-shelf technology. “Everybody thinks it’s dry in the desert, but it’s roughly the same amount of moisture in the air as here,” said project manager Erik Hoogendoorn.

Verheggen has created other art/science sculptures with environmental themes. You can read more about them on his blog and about this project SunGlacier on its own blog. I found this video about an earlier project, cool(E)motion, on Verheggen’s personal blog.

According to the SunGlacier blog (Project Outline page), there is a link between the two projects,

The SunGlacier art project hopes to stimulate people to think creatively about solutions to the challenges of climate change. These changes are not necessarily all negative or better still, if we can find a way to turn some of them to our advantage then nothing should stop us to do so. To carry this fresh and positive way of thinking forward, I have kicked off the SunGlacier project as a new and unique sequel to the successful cool(E)motion endeavour.

Smart windows in The Netherlands and in Vancouver

Michael Berger at Nanowerk has written a good primer on smart windows while discussing a specific project from The Netherlands. From Berger’s article,

‘Smart’ windows, or smart glass, refers to glass technology that includes electrochromic devices, suspended particle devices, micro-blinds and liquid crystal devices. Their major feature is that they can control the amount of light passing through the glass and increase energy efficiency of the room by reducing costs for heating or air-conditioning. In the case of self-powered smart windows the glass even generates the energy needed to electrically switch its transparency.

Smart windows can be electrochromic and/or photochromic. From an article by Alan Chen, of the Lawrence Berkeley National Laboratory, titled, New Photochromic Material Could Advance Energy-Efficient Windows,

A photochromic material is one that changes from transparent to a color when it is exposed to light, and reverts to transparency when the light is dimmed or blocked. An electrochromic material changes color when a small electric charge is passed through it. Both photochromic and electrochromic materials have potential applications in many types of devices.

As for how both materials could have applications appropriate for windows, Berger’s article describes a smart window that sounds like it’s both electrochromic and photochromics and has the added benefit of being able to power itself,

A new type of smart window proposed by researchers in The Netherlands makes use of a luminescent dye-doped liquid-crystal solution sandwiched in between electrically conductive plates as an energy-generating window.

The dye absorbs a variable amount of light depending on its orientation, and re-emits this light, of which a significant fraction is trapped by total internal reflection at the glass/air interface.

(For more details about this specific project, please read Berger’s full article.)

A few months ago I chanced across a local (Vancouver, Canada-based) start-up company, SWITCH Materials, that features technology for smart windows. From the company website (Technology page),

SWITCH’s advanced materials are based on novel organic molecules that react to both solar and electrical stimulation. Smart windows and lenses are the first commercial application under development at SWITCH. They darken when exposed to the sun and rapidly bleach on command when stimulated by electricity.

While competitive technologies rely on either photochromism or electrochromism, SWITCH’s hybrid technology offers the advantages of both, providing enhanced control and lower cost manufacturing.

• SWITCH’s technology also operates without requiring a continuous charge, and as a result has great potential for significant cost savings in many applications.

• The organic compounds in SWITCH’s materials are thermally stable and remain in their coloured state until electricity reverses the chemical transformation.

As far as I can tell, one of the big differences between this Canadian company’s approach and the Dutch research team’s is the Canadian’s use of organic compounds. Also, one of the key advantages (in addition to the ability to generate electricity) to the Dutch team’s approach is that users can control the window’s transmission of light.

I don’t know how close either the Canadian company (SWITCH) or the Dutch research team is to a commercial application but there is this excerpt from the Jan. 14, 2010 news release (on the Pangaea Ventures website),

SWITCH Materials Inc., an advanced materials company developing energy saving SMART window solutions, has raised $7.5M in Series B financing. The Business Development Bank of Canada (BDC Venture Capital) led the investment, with participation from existing investors GrowthWorks, Pangaea Ventures and Ventures West. Proceeds will be used for continuing R&D and to complete product commercialization.

“I am excited that an up and coming Canadian clean tech company will be added to our portfolio,” said Geoff Catherwood, Director of Venture Capital at BDC. “The technology being developed at SWITCH carries tremendous potential to address the burgeoning demand for a new generation of window technology. Producing a SMART window solution that can meet the price point required for significant market penetration will enable SWITCH to gain a leadership position in a large untapped market.” In conjunction with the financing, Mr. Catherwood will join the company’s Board of Directors.

I notice the news release makes no mention of a timeline for possible commercial applications or of competitors for that matter. In addition to the Dutch research team (there’s a Dutch company [I blogged about them here {scroll down}] that is producing something remarkably similar [it too offers control for transmission of light] to the Dutch research team’s smart windows profiled by Berger), there’s competition from the Americans who, recently, through their federal Dept. of Energy invested $72M (a loan guarantee added to previous investments) in SAGE Electrochromics.

The market for windows that could conceivably eliminate or seriously minimize the use of air conditioning is huge. In this era of concern about energy use and climate change, air conditioning is a problem as it uses a tremendous amount of energy, has a significant carbon footprint, and most importantly for business, it is expensive. Think of Hong Kong, Shanghai, Delhi, Tokyo, Rio de Janeiro, Cairo, Tel Aviv, Nairobi,  Toronto, New York, Montréal, Chicago, Paris, London, Belgrade, Berlin, etc. during their respective hot seasons and the advantages of smart windows become quite apparent.

One last thing I’d like to mention about the Canadian company, it’s a Simon Fraser University (SFU), spinoff with Neil Branda, director of SFU’s nanotechnology centre, 4D Labs as their chief technical officer. Dr. Branda’s research work was last mentioned on this blog in a posting that featured, SFU scientists their phasers on stun as part of the title.

Augmented reality: Star Trek’s holodeck or Bradbury’s Farenheit 451?

I sometimes take a walk on the wild side and simply post about something that interests me so today, I have two items about augmented reality projects from the Fast Company website. The first article by Cliff Kuang highlights a project at McGill University in Montréal, Canada where researchers have created a floor that can feature different textures. From the article,

What happens when display screen technology gets so cheap you can lay it down like carpeting? Researchers at Canada’s McGill University have an idea: floor tiles which use precisely calibrated vibrations to simulate snow, grass, sand, and myriad other surfaces–and can even be programmed to become virtual buttons and sliders.

It sounds like a promising start to Star Trek’s  holodeck suite doesn’t it? You can read more about it in Kuang’s article and if you’re interested in additional detail, you can go to Kristina Grifantini’s article in Technology Review where she notes that the project was presented at the IEEE (Institute of Electrical and Electronics Engineers) 2010 Haptics symposium in Waltham, Massachusetts this last March. From Grifantini’s article,

Yon Visell, a researcher at McGill’s Center for Intelligent Machines and first author of the paper, says the tiles could be used “either for human computer interaction or immersive virtual reality applications.”

This next augmented reality project is written up in a Fast Company article by Ariel Schwartz and features a focus on changing social behaviour. Ever been somewhere and observed someone getting beaten not knowing how to intervene and put a halt to the situation? This project in The Netherlands features a giant billboard where such a scene plays out but if you look up, you’ll see yourself incorporated (realtime) into the scene as a bystander. Here’s the video from YouTube,

Live interactive mega billboard against agression

The experience of watching  this piece (watching the watchers become part of the drama they watch on the big billboard) reminded me of the movie version of Ray Bradbury’ story Farenheit 451 where in a future time firemen are called in to burn books which are illegal to read or own. We meet one of the lead characters, a fireman played by Oskar Werner, as he and his team are called in to destroy a library in someone’s home. He later returns to his own home where his wife demands that he purchase a fourth video wall for the room where she watches her soap opera. She needs the fourth wall as it will give her an immersive experience where she’s entered and become part of the soap opera.

This project is lightyears from Farenheit 451 dystopic scenario in terms of how and to what uses these technologies can be implemented. The billboard offers you both a reflection of your own behaviour as a bystander (in what is thankfully a drama this time) while offering you practical options for dealing with the real life situation should it arise.