Transforming a single pencil cactus (Euphorbia tirucalli) into a yard full of eye-catching greenery is a rewarding weekend project. These fast-growing succulent plants are fun thanks to their ...

The researchers use gigahertz acoustic waves to control the gain and loss of confined modes of an exciton–polariton condensate in a microcavity, enabling dynamic population transfer. Selective ...

Semiconductor lasers use the optical properties of semiconducting materials to produce coherent light. Electrons and their positive-charge counterpart called holes are injected into an optically ...