Ultrasonic-controlled micro-lens arrays in germanium for optical tweezers to sieve the micro-particles

In this article, the micro-particle sieving capability of optical tweezers arrays in Germanium modulated by ultrasonic waves is presented. The sieving processes are controlled by changing of initial phase or intensity and frequency of ultrasonic waves. The simulation results show that the optical tweezers arrays will act as the dynamical one, which can sieve the dielectric micro-particles in 3D space in the embedding fluid.