Optical Accelerator of Nanoparticles

A model of the optical nanoaccelerator that allows the acceleration of nanoparticles to velocities of several meters per second with the aid of low-intensity external fields is proposed. The system is based on the application of the plasmon resonator that exhibits a relatively high gain of local field, which leads to a significant increase in the gradient optical force that is exerted on the nanoobject. The conditions under which the nanoparticle is pushed out from the resonator by the gradient force, so that a shot effect is observed, are determined. The effect of the perturbation that is introduced by the nanoparticle in the field distribution in the resonator on the electromagnetic forces and the acquired energy is analyzed.