Researchers operate lab-grown heart cells by remote control: Graphene surface allows researchers to control cell behavior with light -- a technique that could speed the search for more precise, less toxic therapeutic drugs

Researchers have developed a technique that allows them to speed up or slow down human heart cells growing in a dish on command -- simply by shining a light on them and varying its intensity. The cells are grown on a material called graphene, which converts light into electricity, providing a more realistic environment than standard plastic or glass laboratory dishes.