Applications include nanotechnology, more
Defects such as cracks in a material are responsible for everything from malfunctioning microchips to earthquakes. Now MIT engineers have developed a model to predict a defects birthplace, its initial features and how it begins to advance through the material.
The model could be especially useful in nanotechnology. "As devices get smaller and smaller, understanding the phenomena of defect nucleation and growth becomes more and more important," said Subra Suresh, head of the Department of Materials Science and Engineering (DMSE). A seemingly minuscule dislocation--a local disorder in the arrangement of atoms inside a material--or a crack can drastically compromise the performance of a device.
"There has been much past work on defects in materials, but no one has really explained how a crack or void nucleates in the first place. This work is a first step to that end," said Suresh, an author of a paper on the work that appeared in a recent issue of Nature.
Elizabeth Thomson | EurekAlert!
Let the good tubes roll
19.01.2018 | DOE/Pacific Northwest National Laboratory
Method uses DNA, nanoparticles and lithography to make optically active structures
19.01.2018 | Northwestern University
On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.
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What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.
Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...
At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...
Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.
Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...
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