Science Daily  September 28, 2021 Optical tweezers were developed using a highly focused laser beam to control and maneuver tiny particles. An international team of researchers (Sweden, Russia) has shown that even unfocused light can be used to maneuver microscopic particles in a controlled manner by developing “metavehicle” consisting of a tiny particle coated with metasurface. They used the forces resulting from the light’s change in momentum control the meta-surface. By placing the metavehicle at on the bottom of the water dish, they used loosely focused laser to direct a plane wave of light onto them moving the metavehicle in […]