(Press-News.org) WASHINGTON, D.C., (Oct. 19, 2010) -- Lithium-ion batteries have become ubiquitous in today's consumer electronics -- powering our laptops, phones, and iPods. Research funded by DARPA is pushing the limits of this technology and trying to create some of the tiniest batteries on Earth, the largest of which would be no bigger than a grain of sand.
These tiny energy storage devices could one day be used to power the electronics and mechanical components of tiny micro- to nano-scale devices.
Jane Chang, an engineer at the University of California, Los Angeles, is designing one component of these batteries: the electrolyte that allows charge to flow between electrodes. She presents her results today at the AVS 57th International Symposium & Exhibition, which takes place this week at the Albuquerque Convention Center in New Mexico.
"We're trying to achieve the same power densities, the same energy densities as traditional lithium ion batteries, but we need to make the footprint much smaller," says Chang.
To reach this goal, Chang is thinking in three dimensions in collaboration with Bruce Dunn other researchers at UCLA. She's coating well-ordered micro-pillars or nano-wires -- fabricated to maximize the surface-to-volume ratio, and thus the potential energy density -- with electrolyte, the conductive material that allows current to flow in a battery.
Using atomic layer deposition -- a slow but precise process that allows layers of material only an atom thick to be sprayed on a surface -- she has successfully applied the solid electrolyte lithium aluminosilicate to these nanomaterials.
The research is still in its early stages: other components of these 3D microbatteries, such as the electrodes, have also been developed, but they have yet to be assembled and integrated to make a functioning battery.
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The presentation, "Engineering LixAlySizO Thin Films as a Solid Electrolyte for 3D Microbatteries" is at 2:40 p.m. on Tuesday, October 19, 2010.
ABSTRACT: http://www.avssymposium.org/Open/SearchPapers.aspx?PaperNumber=EN+EM-TuA-3
MORE INFORMATION FOR JOURNALISTS
The AVS 57th International Symposium and Exhibition is being held October 17-22, 2010, at the Albuquerque Convention Center, in Albuquerque, New Mexico. The meeting includes more than 1,200 talks and posters presented in more than 130 technical sessions. All meeting information, including directions to the Convention Center, can be found at:
http://www2.avs.org/symposium/
REGISTRATION -- Staff reporters and professional freelance journalists working on assignment are invited to attend the conference free of charge. Journalist registration instructions can be found at:
http://www2.avs.org/symposium/AVS57/pdfs/pressinvite.pdf
PRESS ROOM
The AVS press room will be located in East Lobby of the Albuquerque Convention Center. Press room hours are Monday-Thursday, 8:00 a.m. to 5:00 p.m. The phone number there is 408-205-0595. Press Kits containing company product announcements and other news will be available on CD-ROM in the press room. Also access the online press room at: http://www2.avs.org/symposium/AVS57/pages/press57.html
USEFUL LINKS
Complete Program: http://www2.avs.org/symposium/AVS57/pages/tech_program.html
Searchable abstracts: http://www.avssymposium.org/Open/SearchPapers.aspx
Topical Conferences: http://www2.avs.org/symposium/AVS57/pages/tech_topconf.html#EN
Meeting Home Page: http://www2.avs.org/symposium/
PLENARY SESSION
The plenary talk, "Carbon Nanotubes and Single Sheet Graphene," which will be at noon on Monday, October 18, 2010 in Ballroom B of the Albuquerque Convention Center. See: http://www2.avs.org/symposium/AVS57/pages/sessions_lecturer.html
SPECIAL TUTORIALS
AVS promotes communication, dissemination of knowledge, recommended practices, research, and education in a broad range of technologically relevant topics. One way that it does this is by offering special tutorials in areas such as:
- Graphene Tutorial (Sunday, October 17, 2010, 1:00-5:00 p.m.)
- Tutorial on Nanoparticle Characterization and Toxicity: Significant Challenges and Critical Needs (Sunday, October 17, 2010, 1:00-5:00 p.m.)
To access the complete descriptions of these special tutorials, see:
http://www2.avs.org/symposium/AVS57/pages/special_tutorials.html
ABOUT AVS
As a professional membership organization, AVS fosters networking within the materials, processing, and interfaces community at various local, national or international meetings and exhibits throughout the year. AVS publishes four journals, honors and recognizes members through its prestigious awards program, offers training and other technical resources, as well as career services.
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WASHINGTON, D.C., (Oct. 19, 2010) -- The prevalence of methicillin-resistant Staphylococcus aureus (MRSA) infections is well known, causing an estimated 19,000 deaths and $3-4 billion in healthcare costs per year in the U.S. What is less well known is that this increased infection and resistance rate has not been met with a simultaneous development of novel antimicrobial and antibiotic agents; in fact, only three classes of antibiotics have been developed since the 1950s.
To address this need, scientists at the University of New Mexico are working on a new type of antimicrobial ...
WASHINGTON, D.C., (Oct. 19, 2010) -- In remote, rural areas of southwestern China, villagers cook and dry their clothes by burning pieces of coal they pick up off the ground. This fuel releases a toxin that may be poisoning millions of people, according to an ongoing investigation by chemists at the University at Buffalo in New York. The researchers are presenting their work today at the AVS 57th International Symposium & Exhibition, which takes place this week at the Albuquerque Convention Center in New Mexico.
The toxin in question is fluoride, which binds to calcium ...
WASHINGTON, D.C., (Oct. 19, 2010) -- Bacteria have a natural ability to attach themselves to surfaces, both natural and synthetic. Once attached, they often work cooperatively to form biofilms, thin layers of bacterial colonies that can coat the surface of a medical device and introduce the risk of infection. As a result, orthopedic implants, catheters, and even contact lenses can become vehicles for infection.
Antibacterial materials on the surface can reduce the risk but generally these materials do not stick well to the devices. A research group at the University of ...
WASHINGTON, D.C., (Oct. 19, 2010) -- In a laboratory at Ohio State University, an ongoing experiment is studying why batteries lose their ability to hold a charge as they age -- specifically lithium-ion batteries, which have generated a lot of buzz for their potential to power the electric cars of the future.
Preliminary results presented today at the AVS 57th International Symposium & Exhibition, taking place this week at the Albuquerque Convention Center in New Mexico, suggest that the irreversible changes inside a dead battery start at the nanoscale.
Yann Guezennec ...
How parasites use different life-history strategies to beat our immune systems may also provide insight into the control of diseases, such as elephantiasis and river blindness, which afflict some of the world's poorest communities in tropical South-East Asia, Africa and Central America. The research is due to be published next week in the online, open-access journal PLoS Biology.
The study, led by Dr Simon Babayan of the University of Edinburgh, showed using a mouse model of parasite infection (for diseases such as elephantiasis) that when the parasitic worms enter the ...
UPTON, NY — Many studies have suggested that genetic differences make some individuals more susceptible to the addictive effects of alcohol and other drugs. Now scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory provide the first experimental evidence to directly support this idea in a study in mice reported in the October 19, 2010, issue of Alcoholism Clinical Experimental Research.
The study compared the brain's response to long-term alcohol drinking in two genetic variants of mice. One strain lacked the gene for a specific brain receptor ...
In contrast to the findings of some studies and the recommendations that pregnant women increase their intake of fish oil via dietary docosahexaenoic acid (DHA) because of the possible benefits, a randomized trial that included more than 2,000 women finds that use of DHA supplements did not result in lower levels of postpartum depression in mothers or improved cognitive and language development in their offspring during early childhood, according to a study in the October 20 issue of JAMA.
"Epidemiological investigations from the United States and Europe demonstrate ...
Hospitals that had operating room personnel participate in a medical team training program that incorporates practices of aviation crews, such as training in teamwork and communication, had a lower rate of surgical deaths compared to hospitals that did not participate in the program, according to a study in the October 20 issue of JAMA.
Adverse events related to surgery continue to occur despite the best efforts of clinicians, according to background information in the article. In 2006, the Veterans Health Administration (VHA), the largest national integrated health ...
Follow-up of about 11 years of participants in the Women's Health Initiative finds that among postmenopausal women, use of estrogen plus progestin is associated with an increased incidence of breast cancers that are more advanced, and with a higher risk of deaths attributable to breast cancer, according to a study in the October 20 issue of JAMA.
In the Women's Health Initiative (WHI) randomized, placebo-controlled trial of estrogen plus progestin, after an average intervention time of 5.6 years and an average follow-up of 7.9 years, breast cancer incidence was increased ...
CHAPEL HILL – Researchers from the University of North Carolina at Chapel Hill School of Medicine have discovered a gene variant that may protect against alcoholism.
The variant, in a gene called CYP2E1, is associated with a person's response to alcohol. For the ten to twenty percent of people that possess this variant, those first few drinks leave them feeling more inebriated than the rest of the human population, who harbor a different version of the gene.
Previous studies had shown that people who react strongly to alcohol were less likely to become alcoholics ...
