Navigation Links
New silicon-germanium nanowires could lead to smaller, more powerful electronic devices
Date:12/9/2009

p interfaces in nanowires, thereby addressing an important limitation in the growth of nanowires," Ross said.

According to Kodambaka, silicon-germanium nanostructures also have thermoelectric applications, in which heat is converted into electricity.

"The Jet Propulsion Laboratory uses bulk chunks of silicon-germanium to power their satellites, and now there is a lot of interest in using a similar technology in automobiles. These nanowires have great potential in any area involving electronics," Kodambaka said.

To grow the silicon-germanium nanowires, tiny particles of a gold-aluminum alloy are first heated to temperatures above 370 degrees Celsius and melted inside a vacuum chamber. A silicon-containing gas is then introduced into the chamber, causing silicon to precipitate and form wires under the droplets. A germanium-containing gas is used to form the germanium wires.

"Think of it as ice growing from water vapor or the formation of ice crystals during a snow storm. You can get forests of ice wires under the right conditions instead of getting snow flakes or flat films of sleet," Kodambaka said. "But instead of water vapor, we introduced silicon vapor to get the silicon wire."

"The challenge was to create a really sharp interface between the silicon and germanium in each wire," Kodambaka said. "So we cooled the liquid droplets until they solidified. This allowed us to get rid of excess silicon in the alloy. Then, germanium wire segments could be grown on the silicon with the introduction of germanium vapor, and sharp interfaces formed."

The next step for the team is to grow the same structures over larger areas in a conventional growth reactor rather than in a tiny area under the microscope.

"This will allow my colleagues at IBM to process the wires into devices and measure their electronic properties," Ross said. "Of course, we would hope that the properties are improved, compare
'/>"/>

Contact: Wileen Wong Kromhout
wwkromhout@support.ucla.edu
310-206-0540
University of California - Los Angeles
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Carbon nanotubes to be replaced by MoSIx nanowires in high-tech devices says new study
2. High Q NIST nanowires may be practical oscillators
3. Chemists measure copper levels in zinc oxide nanowires
4. Carbon nanotubes outperform copper nanowires as interconnects
5. Engineers make first active matrix display using nanowires
6. Spiraling nanotrees offer new twist on growth of nanowires
7. Nanowires may boost solar cell efficiency, UC San Diego engineers say
8. Strong elasticity size effects in ZnO nanowires
9. Researchers peer into nanowires to measure dopant properties
10. Self-assembled nanowires could make chips smaller and faster
11. Evidence of macroscopic quantum tunneling detected in nanowires
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/21/2015)... , May 21, 2015 ... inner feelings - and those of others. Being able ... senses. Analyze and read people to anticipate their thoughts ... your deepest emotions and feelings to create unique abstract ... of responsive games. Get inside a first-person-shooter as it ...
(Date:5/21/2015)... Patent Offering, The patent’s technology pertains to ... imaging within a body lumen (open space). Known ... low cost, single-use disposable illumination and camera module (housing). ... 2013 and the patent approval was received on January ... customize the lighting and magnification of the endoscope for ...
(Date:5/21/2015)... 2015 As part of its philanthropic ... Sun Health Foundation funded a $3.25 million project to ... with the most up-to-date features and technology. , The ... pharmacy's 45 staff members will begin moving from the ... the coming days. , The current pharmacy has ...
(Date:5/21/2015)... 21, 2015 /PRNewswire/ - RepliCel Life Sciences Inc. ... medicine company focused on the development of autologous ... at the International Society for Cellular Therapy (ISCT) ... tendinosis currently in a Phase 1/2 clinical trial.  ... from 5:30 PM to 7:00 PM local ...
Breaking Biology Technology:5 Days to Meet ARGUS - The World's First Contactless Emotions Scanner 2IpAuctions™ Presents The Worlds Smallest Disposable Illuminated Endoscope For Auction 2IpAuctions™ Presents The Worlds Smallest Disposable Illuminated Endoscope For Auction 3Sun Health Foundation Provides $3.25M to Expand, Relocate Banner Del E. Webb Medical Center Pharmacy 2Sun Health Foundation Provides $3.25M to Expand, Relocate Banner Del E. Webb Medical Center Pharmacy 3RepliCel to Present Unique Autologous Cell Treatment for Achilles Tendinosis at International Society for Cellular Therapy Conference 2RepliCel to Present Unique Autologous Cell Treatment for Achilles Tendinosis at International Society for Cellular Therapy Conference 3
... NEW YORK , June 21 Reportlinker.com ... its catalogue: , , ... Molecular Diagnostics Market: DNA Probes and Biochips ... Instrument and Reagent Suppliers , ...
... /PRNewswire-FirstCall/ - Aeterna Zentaris Inc. (NASDAQ: AEZS ... company specialized in oncology and endocrinology, announced today that ... of US$12.1 million of units comprised of ... institutional investors. Net proceeds from this offering, after deducting ...
... DALLAS, Texas , June 21, 2010 The Pharmaceuticals ... Market (2010 -2015). , , , ... Browse in-depth TOC on World Low Calorie/Diet Beverages Market (2010,-2015)Market Report. Early ... , , ...
Cached Biology Technology:Reportlinker Adds Molecular Diagnostics Market: DNA Probes and Biochips -- New Product Development Opportunities and Business Expansion Strategies for Instrument and Reagent Suppliers 2Reportlinker Adds Molecular Diagnostics Market: DNA Probes and Biochips -- New Product Development Opportunities and Business Expansion Strategies for Instrument and Reagent Suppliers 3Reportlinker Adds Molecular Diagnostics Market: DNA Probes and Biochips -- New Product Development Opportunities and Business Expansion Strategies for Instrument and Reagent Suppliers 4Reportlinker Adds Molecular Diagnostics Market: DNA Probes and Biochips -- New Product Development Opportunities and Business Expansion Strategies for Instrument and Reagent Suppliers 5Reportlinker Adds Molecular Diagnostics Market: DNA Probes and Biochips -- New Product Development Opportunities and Business Expansion Strategies for Instrument and Reagent Suppliers 6Aeterna Zentaris Receives US$12 Million on Closing of Registered Direct Offering 2Aeterna Zentaris Receives US$12 Million on Closing of Registered Direct Offering 3World Low Calorie/Diet Beverages Market (2010 -2015): MarketsandMarkets 2World Low Calorie/Diet Beverages Market (2010 -2015): MarketsandMarkets 3
(Date:4/20/2015)... PASADENA, Calif. , April 20, 2015 ... San Gabriel Valley to implant a new miniaturized, wireless ... HF System is the first and only FDA-approved heart ... reduce hospital admissions when used by physicians to manage ... a sensor that is implanted in the pulmonary artery ...
(Date:4/14/2015)... 14, 2015  HYPR Corp. today announced it ... ) Alliance tm , an industry consortium transforming ... to share technology and collaborate to deliver open ... more secure and private, and easier to use. ... that protects sensitive user information and eliminates the ...
(Date:4/13/2015)... a leading cloud-based consumer engagement platform that provides trusted ... communities around health and wellness, announced today the launching ... The ... vehicle to receive validated health information from consumers. ... will allow higi,s trusted partners, on a user opt-in ...
Breaking Biology News(10 mins):Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 2Huntington Memorial Hospital Becomes First in the San Gabriel Valley to Offer Patients a New Heart Failure Monitoring Solution 3HYPR Corp. Joins the FIDO Alliance 2HYPR Corp. Joins the FIDO Alliance 3higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 2higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 3
... (TEs) DNA sequences that move from one location in ... animals, evolve rapidly and promote the evolution of the genome. ... diversity needed to adapt to a changing climate is the ... being funded by a nearly $4.8 million five-year National Science ...
... Mass. -- Biological systems, including cells, tissues and organs, ... in harmony. These systems are often dauntingly complex: Inside ... other to determine how the cell will develop and ... complexity, a growing number of biologists and bioengineers are ...
... dark stripes on the tiny zebrafish you might not ... discovering a treatment for the deadly skin disease melanoma. ... for the pigmentation of zebrafish stripes and for human ... PhD, assistant professor of molecular medicine at the University ...
Cached Biology News:UC Riverside geneticists to study how plants adapt to a changing environment 2UC Riverside geneticists to study how plants adapt to a changing environment 3MIT systems biologists use computer models to predict animal cell behavior 2MIT systems biologists use computer models to predict animal cell behavior 3Earning its stripes 2Earning its stripes 3