Navigation Links
Building better structural materials
Date:12/13/2012

Washington, D.C. When materials are stressed, they eventually change shape. Initially these changes are elastic, and reverse when the stress is relieved. When the material's strength is exceeded, the changes become permanent. This could result in the material breaking or shattering, but it could also re-shape the material, such as a hammer denting a piece of metal. Understanding this last group of changes is the focus of research from a team including Carnegie's Ho-kwang "Dave" Mao.

Their breakthrough research on the behavior nickel nanocrystals under intense pressure is published December 14 by Science. Their findings could help physicists and engineers create stronger, longer-lasting materials. It can also help earth scientists understand tectonic events and seismicity.

It is believed that permanent changes to metallic grains when under pressure are associated with the movement of structural irregularities in the grains, called dislocations. But the deformation of nanocrystalline materials has been controversial because it was thought that below a certain grain size, the structural irregularities would not form and the deformation would be dictated by motions of the boundary between grains instead. According to computer analysis, this critical limit would occur in nanocrystals at sizes between 10 and 30 nm in size.

Experimental work on nanocrystals under pressure has been limited by technical hurdles. But new capabilities using a technique called radial diamond anvil cell x-ray diffraction has opened the door to moving beyond computer modeling and into the lab.

The team, led by Bin Chen of the Lawrence Berkeley National Laboratory, was able to show that the activities of the structural irregularities that accompany deformation were occurring even in nickel nanocrystals of 3 nanometers in size when they were compressed to higher than 183,000 times normal atmospheric pressure (18.5 gigapascals). This demonstrates
'/>"/>

Contact: Ho-kwang Dave Mao
hmao@ciw.edu
202-478-8935
Carnegie Institution
Source:Eurekalert

Page: 1 2

Related biology technology :

1. HealthTech Capital Announces Awards for the HealthTech Conference 2012 - Building a Business in the New HealthTech Ecosystem
2. Building Wireless Solution More Important than Ever with New Tablets
3. New Study Building Framework to Bring Personalized Medicine to the Clinic
4. Arteriocyte Takes the Lead in Promoting Building Future Pipeline of Women in STEM Career Fields
5. Biobetters in Key Markets - Opportunities for Biotechnology Companies to Sustain Innovation with Low Risk and High Value Offerings
6. A better brain implant: Slim electrode cozies up to single neurons
7. Sitting still or going hunting: Which works better?
8. UMass Amherst, Harvard experts say better systems needed for medical device cybersecurity
9. Breathe Better With Clarity Allergy Center
10. Penn researchers study of phase change materials could lead to better computer memory
11. New research could mean faster computers and better mobile phones
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/24/2014)... Washington, USA (PRWEB) November 23, 2014 One ... dynamic field of optics and photonics is now available to ... or very low cost. SPIE, the international society for ... access to the complete SPIE Digital Library available ... subsidized price. , “Light-based technologies are integral to all areas ...
(Date:11/24/2014)... (PRWEB) November 24, 2014 The ... ” from METTLER TOLEDO demonstrates how to reduce ... Power analytics and sample panel design can be ... chemistry and protect against corrosion and deposition. Dedicated ... a significant amount of panel space. Additionally, installing ...
(Date:11/23/2014)... 2014 Apiscent Labs, a privately ... chemical ingredients to the global pharmaceutical and flavor ... new website, Apiscent.com. , The Apiscent.com homepage welcomes ... design, easy navigation, rotating images and content focused ... out. , The company’s work in ...
(Date:11/22/2014)... Prominent academics, leaders of the ... December 3rd at Genetic Rx, a networking conference ... take place at the Joseph B. Martin Conference ... the present and future of genetic medicines—including siRNA, ... editing—as well as the treatment of patients with ...
Breaking Biology Technology:SPIE Digital Library Now Available to High Schools, Two-Year Colleges at No or Low Cost 2New Video Shows How to Simplify Cycle Chemistry Sample Panels to Save Time and Costs 2Pioneering Academics and Key Industry Leaders to Discuss Rare Diseases and the Emergence of New Genetic Medicines at Genetic Rx on December 3rd 2
... Pa., April 12, 2011 Morphotek®, Inc., a subsidiary ... received a grant of approximately $947,000 from the United ... development of therapeutic monoclonal antibodies (mAbs) capable of neutralizing ... project is part of a U.S. defense initiative to ...
... EMC Corporation (NYSE: EMC ), the world ... Medical Research Institute , which ranks among the top four ... and among the top 25 organizations worldwide for its research ... as the primary storage platform for its wide range ...
... 12, 2011 Sanford Rose Associates - Charleston, ... healthcare information technology, has promoted Bonnie R. Siegel ... Practice. Health information technology continues to ... trillion global healthcare marketplace. Bonnie will continue to ...
Cached Biology Technology:Morphotek Receives Grant to Support Development of Therapeutic Antibodies against Biowarfare Agents 2Morphotek Receives Grant to Support Development of Therapeutic Antibodies against Biowarfare Agents 3Sanford-Burnham Turns Big Data Into Scientific Breakthroughs With EMC Isilon 2Sanford-Burnham Turns Big Data Into Scientific Breakthroughs With EMC Isilon 3Sanford Rose Associates - Charleston Promotes Bonnie Siegel to Partner 2
(Date:11/18/2014)... Nov. 18, 2014   EyeLock Inc. , ... and MorphoTrust USA (Safran), a leading ... announced a strategic partnership to offer comprehensive biometric ... administration (MVA), airport screening and financial services markets. ... MorphoTrust serves consumers through a nationwide network of ...
(Date:11/7/2014)... associate professor, biomedical engineering, in the Grove School ... York, have identified a molecule that could lead ... aggressive forms of breast cancer. , Triple negative ... owing to aggressive proliferation and metastasis and a ... team, discovered the overexpression of intercellular adhesion molecule-1 ...
(Date:11/6/2014)... is an asset for a predator. Except when that predator ... tiger beetle, relative to its size, is the fastest creature ... body lengths per second (at about five miles per hour). ... take the sprinting gold from the tiger beetle, a person ... The tiger beetle has a problem. At peak speeds, everything ...
Breaking Biology News(10 mins):EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3The tiger beetle: Too fast to see 2
... The global fight against the tuberculosis epidemic receives a ... Group (CNBG) announce that they have reached final agreement ... between the leading non-profit developer of TB vaccine candidates ... commitment by both to engage and strengthen the role ...
... Representatives of a giant tortoise species that had apparently ... ago must be alive today, if in very small numbers. ... Biology, a Cell Press publication, have come to this ... Chelonoidis elephantopus in the DNA of their hybrid ...
... WEST LAFAYETTE, Ind. - Modified probiotics, the beneficial ... one day decrease the risk of Listeria ... Purdue University research. Arun Bhunia, a professor of ... and Ok Kyung Koo, a former Purdue doctoral student, ...
Cached Biology News:Aeras and CNBG sign agreement on tuberculosis vaccine R&D 2'Extinct' for 150 years, an iconic Galpagos giant tortoise species lives 2Pill some day may prevent serious foodborne illness, scientist says 2
7G10 anti-Fasciclin III...
Sheep polyclonal to Salmonella Shoreditch ( Abpromise for all tested applications). Antigen: Native Salmonella shoreditch (Group D2)....
Rabbit polyclonal to ZA20D3 ( Abpromise for all tested applications). entrezGeneID: 54469 SwissProtID: Q6FIF0...
... for all tested applications). ... from within residues 1 - 100 of Mouse ... proprietary) (Peptide available as ... 5453 Swiss Protein ID: ...
Biology Products: