The trapping force of the optical tweezers is studied using T-matrix method when the particle is in sizes comparable with the wavelength of the incident light. The T-matrix depends only on the composition、 size、 shape and orientation of particles, independent of the incident field. The basic principles and the calculation methods of T-matrix method are reviewed. The calculations of trapping force and torque of the single particle and two or more particles using T-matrix method are summarized. The prospect provided by T-matrix method for optical tweezers is also analyzed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.