Untersuchungstechnik: Mit rotem Licht beleuchten, blaues Licht zurückbekommen
Stresses and strains can drastically alter the properties of a material, and TU Wien has now developed a method to make these internal deformations visible. Two-dimensional materials such as graphene, which consist of only one or a few atomic layers, have been a very promising aspect of materials science over recent years. They demonstrate remarkable properties that open up completely new technical possibilities, from sensor technology to solar cells. However, there is one important phenomenon that could not be measured accurately up until now: the extreme internal stresses and strains that such materials may be subjected to, which often drastically alter the material's physical properties. TU Wien has now successfully measured these distortions in 2D materials at microscopic level, which means it is now possible to observe precisely (point for point) how the properties of a material may be altered as a result of a simple distortion. These new measurement methods have now been published in the specialist journal 'Nature Communications'. Stretching and compression - When a material is stretched or compressed, the distance between the individual atoms changes, and this distance has an influence on the electronic properties of the material.
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