Method for controlling optical force which radial isotropic nanowire is subjected to

The invention discloses a method for controlling optical force which a radial isotropic nanowire is subjected to. Researches show that optical force which the radial isotropic nanowire is subjected to meets the Rayleigh's law, but the optical force which the radial isotropic nanowire is subjected to has abnormal behaviors under the conditions of non-Rayleigh disappearance and non-Rayleigh divergence. According to the method, according to the full-wave electromagnetic scattering theory and Maxwell stress tensor integral method, by utilizing changes of incident wave vectors, the optical force which the radial isotropic nanowire is subjected to is controlled. The optical force which the radial isotropic nanowire is subjected to can be enhanced or weakened by adjusting nanowire isotropic parameters. The method for controlling the optical force which the radial isotropic nanowire is subjected to can be used for capturing nano particles, and is favorable for practical application of a radial isotropic nanowire material.