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Optical tweezers are a unique tool for manipulating neutral particles in micro/nano scale and have wide applications in biological and physical fields. However, the majority of tasks with optical tweezers are carried out manually at present time. The manual operation is incompetent in dynamic environment. Automated manipulation of micro/nano particles with optical tweezers can improve both the efficiency...
Optical vortex tweezers, providing orbital angular momentum to trapped particles, have been successfully demonstrated to sort and deliver micro-particles on a mesoscopic-scale. They used mostly a single vortex, in which a single phase singularity is involved in a wavefront. A multiple-vortex with several phase singularities in a wavefront is potentially capable of controlling several independent optical...
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