Archive for the 'Nanotechnology' Category

Molecular Motors and Nanomedicine

The UVa Nano and Emerging Technologies Club (NExT) and the Nanomedicine Engineering Academic Society (NEAS) are co-hosting a presentation by Dr. William H. Guilford, from the Biomedical Engineering Department, about his research in Molecular Motors and Nanomedicine!!!!

Refreshments and snacks will be provided!

When: Wednesday October 26th

Time: 6:00 PM

Room: Physics 204

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Metallic Glass Offers High Strength, Toughness

Popular Science (1/11, Boyle) reports, “Materials scientists in California have made a special metallic glass with a strength and toughness” that is reportedly “greater than any known material” and uses “a recipe that could yield a new method for materials fabrication.” The material is “a microalloy made of palladium” and “has a chemical structure that counteracts the inherent brittleness of glass but maintains its strength. It’s not very dense and it is more lightweight than steel, with comparable heft to an aluminum or titanium alloy.” Materials scientist and co-author Robert O. Ritchie of Lawrence Berkeley National Laboratory said, “It has probably the best combination of strength and toughness that has ever been achieved. … It’s not the strongest material ever made, but it’s certainly one of the best with a combination of strength and toughness.”

Reposted from the 1/12/11 ASEE First Bell.

Nanoscience Talk

The Charles L. Brown Science and Engineering Library and the University Libraries Professional Interests Committee

Present

Nanoscience: Current Applications, Future Possibilities, and Ongoing Research at UVa

Friday November 12, 2010
2:00 P.M.
Clark Hall
The Charles L. Brown Science and Engineering Library
Main Reading Room, West

Presentation Speaker

Lisa E. Friedersdorf, PhD

Managing Director, nanoSTAR Institute
Research Program Manager, Office of the Vice President for Research
University of Virginia

This event is presented free of charge and all University of Virginia students and faculty and members of the public are invited to attend. Refreshments will be provided.

Ceramic Printing and Folding

New Ceramic Printing, Folding Process Could Lead To Lightweight Parts.

Technology Review (4/15, Bourzac) reports, “A new way of printing and folding ceramic and metal lattices into miniature structures could lead to novel lightweight engineering structures. The technique involves making latticed sheets from ceramic ink, then folding and heating these sheets to create intricate shapes.” The researchers, from the University of Illinois at Urbana-Champaign and Northwestern University, say the method “fills a need for a way to fabricate complex structures on the centimeter scale–too small for conventional molding or machining, and too big for lithography or similar techniques.” Among the noted potential applications for the process are aerospace, tissue engineering and industrial chemical production.

Reposted from ASEE First Bell, April 15, 2010

Quantum Dots to Improve the Picture

Quantum Dots Could Radically Increase Quality Of Cellphone Photos.

The New York Times (3/22, B6, Vance) reports on California-based InVisage Technologies, which “has spent more than three years trying to build a proprietary film that coats the image sensors used in cellphone cameras and allows them to capture more light.” The endeavor is “a rare commercial use” of quantum dots. According to Jess Lee, the chief executive of InVisage, “with such technology, the current three-megapixel camera found in the Apple iPhone could be turned into a 12-megapixel camera that works better in varying light conditions.”

The Wired (3/22, Ganapati) “Gadget Lab” blog reports, “A quantum dot is a nanocrystal made of a special class of semiconductors” that “allows manufacturers to have a very high degree of control over its conductive properties, and is about 90% efficient at absorbing light, according to Lee.” InVisage’s design involves the suspension of these quantum dots in a fluid, which it then “spins it onto a layer of silicon [and] adds the required metal circuitry to create a new type of sensor that it is calling QuantumFilm.” A number of sources including the CNET News (3/22, Shankland) “Deep Tech” blog, Technology Review (3/22, Greene) and the Wall Street Journal (3/22, Clark) “Digits” blog also report the story.

Reposted from the March 22, 2010 ASEE First Bell.

NanoDays Open House

The NanoStar Institute is holding its second NanoDays Open House this Sunday, March 28 at Wilsdorf Hall.  Free, and open to the public, NanoDays’ goal is to introduce our local community to concepts and research associated with nanotechnology.  The Open House runs from 2:00 – 5:00 pm, featuring many interactive demonstrations, games, films, posters and multimedia, and construction of the 30 foot nanotube balloon sculpture.  From 5:00 – 6:15, SEAS professors John Bean and Eric Loth will be presenting lay-level talks on “The Incredible Shrinking Transistor” and “The Ultimate Water Slide”, in ChemE 005.

See http://www.virginia.edu/nanostar/nanodays_2010.html for more information.  I hope you can come, and bring your family.

Best regards,

Jerry Floro

Paper Batteries

New Batteries Made From Paper, Nanotube Ink.

In a story on the New York Times (12/9, Mandel) website Greenwire reports, “Ordinary office paper coated with an inky layer of carbon nanotubes or nanowires can make a lightweight, flexible and highly conductive battery or superconductor, according to Stanford University researchers.” The researchers “had previously experimented with making batteries using a similar process of painting nanomaterial ink onto a thin layer of plastic,” but discovered “that pores in paper fibers make it hold the ink better than plastic, for a more durable battery.” According to the scientists, “the conductive paper could be used in lithium-ion batteries in place of metallic components, where its light weight and scalability would provide an advantage over technologies now in use.”

        BBC News (12/9) reports, “A team of researchers at Stanford University started with off-the-shelf copier paper” that is painted “with an ‘ink’ made of carbon nanotubes,” and “is then dipped in lithium-containing solutions and an electrolyte to provide the chemical reaction that generates a battery’s electric current.” This method “could reduce the weight of batteries… by 20%,” according to the researchers. In addition to being “capable of releasing their stored energy quickly,” a Stanford researcher “said the most important aspect of the demonstration was that paper is an inexpensive and well-understood material – making wider usage of the technology more likely.”

        Clay Dillow writes in Popular Science (12/8) that the technology “could bring paper right back around to its former place of prominence, using it to power the very digital devices — smartphones, Kindles, laptops, etc. — that are increasingly replacing print.” Dillow adds that “the paper battery technology is basically market-ready. That’s not to say that researchers won’t need some time to iron out the kinks, but power sources based on this technology could be commercialized very soon compared to a lot of the nano-noise circulating in scientific circles.” The article also includes a video clip of Stanford’s Yi Cui explaining the device. Technology Review (12/9, Bourzac) also reports the story.

Reposted from ASEE First Bell for 12/8/09


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