Multilayers of tungsten selenide – a new, technologically important 2D material – can strongly emit light if strain is applied to them. This result, from researchers at the University of California and the Lawrence Berkeley National Lab, also in California, means that such strained structures might now be used in applications such as LEDs, lasers and photodetectors where thicker films of direct bandgap material are needed….
http://nanotechweb.org/cws/article/tech/58316
