Navigation Links
Tiny wires change behavior at nanoscale
Date:8/29/2011

Thin gold wires often used in high-end electronic applications are wonderfully flexible as well as conductive. But those qualities don't necessarily apply to the same wires at the nanoscale.

A new study from Rice University finds gold wires less than 20 nanometers wide can become "brittle-like" under stress. It appears in the journal Advanced Functional Materials.

The paper by Rice materials scientist Jun Lou and his lab shows in microscopic detail what happens to nanowires under the kinds of strain they would reasonably undergo in, for instance, flexible electronics.

Their technique provides a way for industry to see just how nanowires made of gold, silver, tellurium, palladium and platinum are likely to hold up in next-generation nanoelectronic devices.

Lou and his team had already established that metal wires have unique properties on the nanoscale. They knew such wires undergo extensive plastic deformation and then fracture on both the micro- and nanoscale. In that process, materials under stress exhibit "necking"; that is, they deform in a specific region and then stretch down to a point before they eventually break.

"Gold is extremely ductile," said Lou, an assistant professor of mechanical engineering and materials science. "That means you can stretch it, and it can withstand very large displacement.

"But in this work, we discovered that gold is not necessarily very ductile at the nanoscale. When we stress it in a slightly different way, we can form a defect called a twin."

The term "twinning" comes from the mirrorlike atomic structure of the defect, which is unique to crystals. "At the boundary, the atoms on the left and right sides exactly mirror each other," Lou said. Twins in nanowires show up as dark lines across the wire under an electron microscope.

"The material is not exactly brittle, like glass or ceramic, which fracture with no, or very little, ductility," he sa
'/>"/>

Contact: David Ruth
druth@rice.edu
713-348-6327
Rice University
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Nanowires get into the groove
2. Piezoelectric nanowires allow electrical signals to be produced from mechanical actions
3. With a simple coating, nanowires show a dramatic increase in efficiency and sensitivity
4. Penn research advances understanding of lead selenide nanowires
5. Engineers create vibrant colors in vertical silicon nanowires
6. Novel nanowires boost fuel cell efficiency
7. Biological nanowires expedite future fuel production
8. Major advance in understanding how nanowires form
9. Stretched rubber offers simpler method for assembling nanowires
10. Nanowires exhibit giant piezoelectricity
11. New ultra-clean nanowires have great potential
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2014)... (PRWEB) August 28, 2014 SPIE Fellow ... Physics and Optical Science and Director of the Center ... North Carolina at Charlotte, and co-founder and Chairman of ... serve as the 2015 Vice President of SPIE, the ... President Philip Stahl announced recent election results at the ...
(Date:8/28/2014)... are important devices in spintronics, an electronic which ... electrons but also on their spin and the ... electric into magnetic signals and vice versa. Recently, ... the Institute of Physics at Johannes Gutenberg University ... Prague, and Japan, has for the first time ...
(Date:8/28/2014)... 2014 Sterlitech is proud to announce ... its stable of products . These additional ... and include membrane filters with surface charges. ... demand for our membrane process testing equipment, and correspondingly, ... sheet membranes,” explains Sterlitech President Mark Spatz. “The ...
(Date:8/28/2014)... this month, a report was created by Colorado ... Force on the performance of vehicles using an eco-friendly, ... fuel made from mustard seeds, offered great potential as ... friendly future. In fact, every branch of the U.S. ... foreign oil over the next few years. They will ...
Breaking Biology Technology:Glenn Boreman, UNC Professor and Plasmonics Co-Founder, Elected to SPIE Presidential Chain 2A new, tunable device for spintronics 2A new, tunable device for spintronics 3Sterlitech Corporation Enhances Its Selection of Flat Sheet Membrane Filters 2Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 2Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 3Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 4Can Small Farmers and a New Seed Based Biofuel “Green” the World? Major Universities and Even the U.S. Air Force Seem to Think So 5
... U.S. Asthma Control, RESEARCH TRIANGLE PARK, N.C. and ... with asthma and more than a quarter of,children with ... have their disease well controlled, according to the Asthma ... of the American,Thoracic Society meeting in Toronto., The ...
... May 20 PreViser Corporation,( http://www.previser.com ), a ... assessment technology to the dental profession,announced today the ... (OHI) Ltd ( http://www.previser.co.uk ) of Birmingham, England ... Kingdom and the,Republic of Ireland., OHI Ltd ...
... living computers by genetically altering bacteria. The findings of ... of Biological Engineering, demonstrate that computing in living cells ... applications including data storage and as a tool for ... from the biology and the mathematics departments of Davidson ...
Cached Biology Technology:Asthma Uncontrolled in More Than 40 Percent of Adults With the Disease, New Landmark Survey Shows 2Asthma Uncontrolled in More Than 40 Percent of Adults With the Disease, New Landmark Survey Shows 3PreViser and Oral Health Innovations Ltd Form UK Partnership to Provide Oral Health Scoring and Risk Analysis 2Researchers bring new meaning to the term 'computer bug' 2
(Date:8/29/2014)... University of Texas Medical Branch at Galveston has gone on ... completely protect monkeys against a lethal dose of Ebola virus ... the disease is severe. , Thomas Geisbert, professor of microbiology ... discussing advances in Ebola treatment research. The filoviruses known as ... of pathogens, with fatality rates of up to 90 percent. ...
(Date:8/29/2014)... connections in transcription factor networks (TFNs) to evaluate the ... in PLOS Computational Biology in August. ... a network,s resilience against mutations. , "In simulations, ... models has a greater effect on robustness than varying ... Dov A. Pechenick, PhD, lead author and former researcher ...
(Date:8/29/2014)... This news release is available in German . ... of chemical signals between organisms is considered the oldest ... social interactions between conspecifics, for example, the sexual attraction ... trigger social responses and to coordinate reproductive behavior in ... at the University of the Algarve in Faro, Portugal, ...
Breaking Biology News(10 mins):Leading Ebola researcher at UTMB says there's an effective treatment for Ebola 2Assortativity signatures of transcription factor networks contribute to robustness 2Ready for mating at the right time 2Ready for mating at the right time 3
... The most common cause of a mare,s reduced fertility is ... caused by the bacteria , Streptococcus equi subspecies ... negative for streptococci have a dormant infection without showing clinical ... to reduce the fertility of the mares," says Professor Anders ...
... Researchers at the Johns Hopkins University in Baltimore, Md., ... have found that nonself-donated cells (allografts) better survive implantation ... grafts are injected into the striatum (STR) of the ... region. In their study, all FM grafts were ...
... being passive wallflowers, are "secret gardeners" that actively engineer their ... team of scientists from Duke University and the University of ... that the distribution of plants within a marsh is a ... that,s where conditions like soil aeration and salinity best meet ...
Cached Biology News:Researchers make racehorses fertile 2Impact of stem cell transplantation location in brain a crucial factor for cell survival 2Marsh plants actively engineer their landscape 2
Goat polyclonal to MLH3 Immunogen: Synthetic peptide: RQSLQQSMPPCEPP (Human) from C Terminus of the protein sequence according to NP_055196....
Polyclonal Antibody to SHPRH...
Rabbit polyclonal to TetR ( Abpromise for all tested applications). Antigen: Synthetic peptide: AQKLGVEQPTLYWHVKNKR, corresponding to amino acids 31 - 49 of TetR...
Biotin anti-mouse Ly-49C/F/I/H...
Biology Products: