Scientists develop new materials that move in response to light

Phys.org  July 24, 2018
A team of researchers in the US (Tufts University, Los Alamos National Laboratory) has developed magnetic elastomeric composites that move in different ways when exposed to light. The flexible material composites, when illuminated, are capable of macroscale motion, through the interplay of optically absorptive elements and low Curie temperature magnetic materials. These composites can be formed into films, sponges, monoliths, and hydrogels, and can be actuated with light at desired locations. They demonstrated the versatility of the material for gripping and releasing, heliotactic motion, light-driven propulsion, and rotation… read more. TECHNICAL ARTICLE 

A film deflects from a magnetic field when exposed to light. Credit: SilkLab, Tufts University