Tag Archives: CINT

Carbon nanotube optics and the quantum

A US-France-Germany collaboration has led to some intriguing work with carbon nanotubes. From a June 18, 2018 news item on ScienceDaily,

Researchers at Los Alamos and partners in France and Germany are exploring the enhanced potential of carbon nanotubes as single-photon emitters for quantum information processing. Their analysis of progress in the field is published in this week’s edition of the journal Nature Materials.

“We are particularly interested in advances in nanotube integration into photonic cavities for manipulating and optimizing light-emission properties,” said Stephen Doorn, one of the authors, and a scientist with the Los Alamos National Laboratory site of the Center for Integrated Nanotechnologies (CINT). “In addition, nanotubes integrated into electroluminescent devices can provide greater control over timing of light emission and they can be feasibly integrated into photonic structures. We are highlighting the development and photophysical probing of carbon nanotube defect states as routes to room-temperature single photon emitters at telecom wavelengths.”

A June 18, 2018 Los Alamos National Laboratory (LANL) news release (also on EurekAlert), which originated the news item, expands on the theme,

The team’s overview was produced in collaboration with colleagues in Paris (Christophe Voisin [Ecole Normale Supérieure de Paris (ENS)]) who are advancing the integration of nanotubes into photonic cavities for modifying their emission rates, and at Karlsruhe (Ralph Krupke [Karlsruhe Institute of Technology (KIT]) where they are integrating nanotube-based electroluminescent devices with photonic waveguide structures. The Los Alamos focus is the analysis of nanotube defects for pushing quantum emission to room temperature and telecom wavelengths, he said.

As the paper notes, “With the advent of high-speed information networks, light has become the main worldwide information carrier. . . . Single-photon sources are a key building block for a variety of technologies, in secure quantum communications metrology or quantum computing schemes.”

The use of single-walled carbon nanotubes in this area has been a focus for the Los Alamos CINT team, where they developed the ability to chemically modify the nanotube structure to create deliberate defects, localizing excitons and controlling their release. Next steps, Doorn notes, involve integration of the nanotubes into photonic resonators, to provide increased source brightness and to generate indistinguishable photons. “We need to create single photons that are indistinguishable from one another, and that relies on our ability to functionalize tubes that are well-suited for device integration and to minimize environmental interactions with the defect sites,” he said.

“In addition to defining the state of the art, we wanted to highlight where the challenges are for future progress and lay out some of what may be the most promising future directions for moving forward in this area. Ultimately, we hope to draw more researchers into this field,” Doorn said.

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

Carbon nanotubes as emerging quantum-light sources by X. He, H. Htoon, S. K. Doorn, W. H. P. Pernice, F. Pyatkov, R. Krupke, A. Jeantet, Y. Chassagneux & C. Voisin. Nature Materials (2018) DOI: https://doi.org/10.1038/s41563-018-0109-2 Published online June 18, 2018

This paper is behind a paywall.

Los Alamos National Laboratory (New Mexico, US) celebrates its 70th anniversary with two exhibits (nanotechnology and algae biofuels)

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Sadly, nobody thought to offer pictures of the two new 70th anniversary exhibits at Los Alamos National Laboratory’s (LANL) Bradbury Science Museum. The exhibits opened on July 26, 2013 according to the July 22, 2013 news item on HispanicBusiness.com,

Los Alamos National Laboratory’s Bradbury Science Museum is opening two new exhibits July 26 as part of the Laboratory’s 70th Anniversary celebration. One is a nanotechnology exhibit featuring the Laboratory’s Center for Integrated Nanotechnologies (CINT) and the other is an algae biofuel exhibit from the Laboratory and the New Mexico Consortium. …

“We’re pleased to open two new exhibits, on some of the Laboratory’s latest research, as part of our 70th anniversary year. I’m sure these exhibits will broaden the public’s knowledge and appreciation of Los Alamos National Laboratory,” Bradbury Science Museum Director Linda Deck said.

“Nanotechnology–The Science of the Small,” demonstrates the importance of understanding how nanoparticles work, while “Algae to Biofuels: Squeezing Power from Pond Scum,” gives visitors an overview of algae biofuels.

The July 22, 2013 Los Alamos National Laboratory news release, which originated the news item, explains about the algae biofuels exhibit,

“We developed this exhibit with the New Mexico Consortium (NMC) and the Bradbury Science Museum to highlight our work in bioenergy,” Jose Olivares of Los Alamos’ Bioscience Division said. Olivares will introduce the exhibit; to complement the algae biofuel exhibit, the Laboratory also will be releasing a video on biofuels.”The Algae to Biofuels exhibit highlights the work of the NMC and algae researchers at the Laboratory, the University of New Mexico [UNM] and New Mexico State University [NMSU] to create an informative, educational and interactive exhibit,” said Shannan Yeager of the NMC. The consortium, she said, plans to develop the exhibit for a broad audience and take it on the road as part of NMC’s educational outreach program. The New Mexico Consortium is a non-profit corporation formed by the three New Mexico research universities: NMSU, the New Mexico Institute of Mining and Technology and UNM.

The news release also offers some tidbits about the nanotechnology exhibit,

“Nanoscience and nanotechnology are exciting new branches of science that have gained an enormous emphasis in our country since the National Nanotechnology Initiative of 2000,” said David Morris, director of Los Alamos’ CINT. “The nanotechnology exhibit at the Bradbury Museum is focused on CINT with the goal of introducing the public to our mission as a Department of Energy facility and to the many exciting discoveries and challenges of working at the nanoscale.”

Visitors will be able to see just how small a nanometer actually is, why research at the nanoscale is important and why nanoparticles behave differently. Laboratory researchers at CINT are exploring all aspects of this new science.

CINT is a United States Department of Energy nanoscale science research center operated by Los Alamos and Sandia National Laboratories.

I did check the Bradbury Science Museum website and couldn’t find anything more about these special exhibits. Admission to the museum is free.

How do you get your nanomanufacturing info.? The National Nanomanufacturing Network wants to know

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According to the April 2, 2012 news item on Nanowerk, the National Nanomanufacturing Network has announced an online survey. From the news item,

The National Nanomanufacturing Network is conducting a survey of nanomanufacturing community members to better understand the avenues that people use to stay informed about advances in nanomanufacturing.

As for who the National Nanomanufacturing Network (NNN) is (from the NNN About page),

The National Nanomanufacturing Network (NNN) is an alliance of academic, government and industry partners that cooperate to advance nanomanufacturing strength in the U.S.

Mission

The mission of the NNN is to serve as a catalyst for progress in nanomanufacturing in the U.S., through the facilitation and promotion of nanomanufacturing workshops, roadmapping, inter-institutional collaborations, technology transition, test beds, and information exchange services. The NNN operates as an open-access network of centers, leaders, experts, and stakeholders from the nanomanufacturing research, development, and education community. It is a partnership between academia, industry and government that is built to foster and serve nanomanufacturing communities of practice.

Network Partners

…

The core foundation of the NNN consists of the four NSF nanomanufacturing NSECs—the Center for Hierarchical Manufacturing (CHM), the Center for High-Rate Nanomanufacturing (CHN), the Center for Scalable and Integrated NanoManufacturing (SINAM), and the Center for Nanoscale Chemical-Electrical-Mechanical Manufacturing Systems (Nano-CEMMS)—as well as the DOE Center for Integrated Nanotechnologies (CINT) at Sandia National Laboratories and the NIST Center for Nanoscale Science and Technology (CNST) and other affiliations. InterNano is the information arm of the NNN—a digital library resource of timely information on nanomanufacturing and a platform for collaboration.

You can go here to take the Nanomanufacturing Information Survey. It’s apparently quite short (five mins.).

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Tag Archives: CINT

Carbon nanotube optics and the quantum

Los Alamos National Laboratory (New Mexico, US) celebrates its 70th anniversary with two exhibits (nanotechnology and algae biofuels)

How do you get your nanomanufacturing info.? The National Nanomanufacturing Network wants to know

Mission

Network Partners