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Dual-curvilinear beam enabled simultaneous and tunable manipulation of light- and dark- seeking particles

Photonics Research
  • Zheng Yuan, Chenchen Zhang, Yuan Gao, Wenxiang Yan, Xian Long, Zhi-Cheng Ren, Xi-Lin Wang, Jianping Ding, and Hui-Tian Wang
  • received 02/01/2024; accepted 04/23/2024; posted 04/24/2024; Doc. ID 520425
  • Abstract: We present an innovative approach for the agile manipulation of light- and dark-seeking particles. Our method involves introducing a dual-curvilinear optical vortex beam (DC-OVB) generated by superimposing a pair of curved beams. The proposed DC-OVB provides customizable motion paths and velocities for both dark-seeking and light-seeking particles. Each curve of the DC-OVB can support a distinct orbital flow density (OFD), enabling the application of torques to light- and dark-seeking particles, guiding them to orbit along specified trajectories. We conduct experimental manipulations on light- and dark-seeking particles, prompting them to execute various curvilinear motions simultaneously, including linear movement, revolution, and rotation.