News tagged with grain boundaries
Researchers discovers how strain at grain boundaries suppresses high-temperature superconductivity
Jun 17, 2009 |
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Researchers at the National Institute of Standards and Technology (NIST) have discovered that a reduction in mechanical strain at the boundaries of crystal grains can significantly improve the performance ...
NIST finds 'a touch of glass' in metal, settles century-old question
Jun 17, 2009 |
3.8 / 5 (5) |
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Better predictions of how many valuable materials behave under stress could be on the way from the National Institute of Standards and Technology (NIST), where scientists have recently found evidence of an ...
Reverse current sheds new light on solar cells
Feb 16, 2009 |
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(PhysOrg.com) -- The electric breakthrough of solar cells cannot be ascribed to the surface preparation as has now been demonstrated by physicists at the University of Leipzig and the company Q-Cells SE in ...
Just Scratching the Surface: New Technique Maps Nanomaterials as They Grow
Nov 04, 2008 |
4.7 / 5 (7) |
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(PhysOrg.com) -- Researchers at Rensselaer Polytechnic Institute have developed a measurement technique that will help scientists and companies map nanomaterials as they grow. The discovery could help create ...
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First full 3-D view of cracks growing in steel
Jul 17, 2008 |
4 / 5 (9) |
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A team of researchers from the University of Manchester (United Kingdom), the National Institute of Applied Sciences in Lyon (France) and the ESRF has revealed how a growing crack interacts with the 3D crystal ...
Highlight: Mechanical energy dissipation in ultrananocrystalline diamond microresonators
Aug 12, 2009 |
5 / 5 (1) |
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Researchers in the Nanofabrication and Devices group at the Argonne National Laboratory, in collaboration with the University of Pennsylvania, Advanced Diamond Technologies Inc., and Innovative Micro Technology, ...
Model simulates atomic processes in nanomaterials
Nanotechnology / Nanomaterials
Mar 01, 2007 |
4.3 / 5 (3) |
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Researchers from MIT, Georgia Institute of Technology and Ohio State University have developed a new computer modeling approach to study how materials behave under stress at the atomic level, offering insights that could ...
Research helps overcome barrier for organic electronics
Nanotechnology / Nanomaterials
Nov 10, 2009 |
4.9 / 5 (10) |
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(PhysOrg.com) -- Electronic devices can't work well unless all of the transistors, or switches, within them allow electrical current to flow easily when they are turned on. A team of engineers has determined ...
Simulation Program Predicts Resistivity in Nanodevices
Jan 17, 2006 |
5 / 5 (3) |
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As nanoscale circuits continue to shrink, electrical resistivity increases in the wiring and limits the maximum circuit speed. A new simulation program developed by researchers at the National Institute of Standards and Technology ...
When is a supersolid not quite so super?
Oct 24, 2006 |
4.4 / 5 (40) |
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A deceptively simple experiment, recently published in the journal Science, has moved physics one step closer to explaining the odd behavior of supersolid helium. The unusual state of matter – in which a port ...
Whole grain cereals, popcorn rich in antioxidants, not just fiber: study
Aug 18, 2009 |
4.4 / 5 (8) |
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In a first-of-its kind study, scientists reported today at the 238th National Meeting of the American Chemical Society (ACS) that snack foods like popcorn and many popular breakfast cereals contain "surprisingly ...
New research shows why metal alloys degrade
Sep 24, 2008 |
4.1 / 5 (32) |
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(PhysOrg.com) -- Metal alloys can fail unexpectedly in a wide range of applications -- from jet engines to satellites to cell phones—and new research from the University of Michigan helps to explain why.
Pore-free Ceramics Shine New Light on Lasers, Electronics and Biomedical Implants
Feb 16, 2009 |
4.9 / 5 (11) |
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(PhysOrg.com) -- To most people, the word "ceramics," refers to opaque clay flower pots or translucent porcelain tea cups. But not all ceramics block or scatter light.
Creation of new school districts in US may cause a new form of segregation
Other Sciences / Social Sciences
Nov 18, 2009 |
4 / 5 (1) |
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Although the Supreme Court's Brown v. Board of Education in 1954 overturned segregation within many U.S. metropolitan communities and districts, school districts were slow to change and have remained segregated between districts. ...
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