Materials seen as promising for optoelectronics and thermoelectric devices finally yield their secrets.
A scanning transmission electron micrograph (STEM) of the polymer material shows its division into crystalline regions (light areas of orderly dots) and the amorphous, disordered matrix, which is seen as the dark background. The original 2-D STEM views were rendered into 3-D form to create this visualization. Image, Asli Ugur