Optical tweezers
Description
Optical tweezers are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects. Optical tweezers have found many applications in nanoscale research. The miniscule forces that light exerts on micron-size particles have empowered scientists, particularly those in biomedicine, enabling them to perform important studies on single molecules, cells and colloids without inflicting damage.
Types
Optical tweezers
