（レーザー関連）Microscopic metavehicles powered by nothing but light

Researchers from Chalmers University of Technology, Sweden, have succeeded in creating tiny vehicles powered by nothing but light. By layering an optical metasurface onto a microscopic particle, and then using a light source to control it, they succeeded in moving the tiny vehicles in a variety of complex and precise ways – and even using them to transport other objects.

Light has an inherent power to move microscopic objects – a property previously used to develop the Nobel prize winning research idea of ‘optical tweezers’, which use a highly focused laser beam to control and manoeuvre tiny particles with incredible precision.