A method of applying a nondestructive mechanical force on one or more cells in aqueous environment by inducing heat generated acoustic pressure pulses. The method comprises providing an energy transmission pattern to induce the applying of a desired nondestructive mechanical force on a at least one cell by forming a plurality of heat generated acoustic pressure pulses in an aqueous environment and instructing the radiation of a target area in proximity to the at least one cell in the aqueous environment with light energy according to the energy transmission pattern.