This scanning electron microscope picture shows individual crystal “grains” in an array of a material called graphene. Researchers have developed a method for creating the arrays, an advancement that ...

Addressable active layers are highly required in optoelectronic devices to realize functional integration and application. Metal halide perovskites have shown promising applications in optoelectronic ...

Optical vortices—light beams carrying orbital angular momentum (OAM)—are characterized by helical wavefronts and phase ...