1 - 10 of 21 articles
One of the largest controversial issues of the materials science community is the interpretation of scaling laws on material strength. In spite of the prevailing view, which considers mechanics as the real cause of such effects, here, we propose a different argument, purely based on geometry....
The notion that plasticity is governed not by the steady flow of a material under an applied stress, but by the occurrence of intermittent avalanches of defects moving through the material, is gaining increasing acceptance. A new study of plastic deformation in polycrystalline materials suggests...
The discovery of polymorphic crystals that have different mechanical properties could prove valuable in the study of structure–property relationships.
The finding that carbon nanotube–elastomer nanocomposites can either contract or expand reversibly on exposure to light is surprising and hard to explain. But this may create a new avenue for the development of light-controlled actuators.
Doping high-temperature superconductors with calcium improves their current-carrying capacity. Two microscopy studies provide insight into how this doping works.
One of the fastest moving and most exciting interfaces of nanotechnology is the use of quantum dots (QDs) in biology. The unique optical properties of QDs make them appealing as in vivo and in vitro fluorophores in a variety of biological investigations, in which traditional fluorescent labels...
Recent advances in III1–x
V ferromagnetic semiconductors (for example in Ga1–x
As) have demonstrated that electrical control of their spin properties can be used for manipulation and detection of magnetic signals
. The Mn2+ ions in these alloys provide magnetic moments, and at the...
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