• PhotoniX
  • Vol. 5, Issue 1, 32 (2024)
Xing Li1,2, Yanlong Yang1, Shaohui Yan1, Wenyu Gao1,2..., Yuan Zhou1,2, Xianghua Yu1, Chen Bai1, Dan Dan1, Xiaohao Xu1,* and Baoli Yao1,2,**|Show fewer author(s)
Author Affiliations
  • 1State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China
  • 2University of Chinese Academy of Sciences, Beijing, 100049, China
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    DOI: 10.1186/s43074-024-00144-5 Cite this Article
    Xing Li, Yanlong Yang, Shaohui Yan, Wenyu Gao, Yuan Zhou, Xianghua Yu, Chen Bai, Dan Dan, Xiaohao Xu, Baoli Yao. Artificial potential field-empowered dynamic holographic optical tweezers for particle-array assembly and transformation[J]. PhotoniX, 2024, 5(1): 32 Copy Citation Text show less

    Abstract

    Owing to the ability to parallel manipulate micro-objects, dynamic holographic optical tweezers (HOTs) are widely used for assembly and patterning of particles or cells. However, for simultaneous control of large-scale targets, potential collisions could lead to defects in the formed patterns. Herein we introduce the artificial potential field (APF) to develop dynamic HOTs that enable collision-avoidance micro-manipulation. By eliminating collision risks among particles, this method can maximize the degree of parallelism in multi-particle transport, and it permits the implementation of the Hungarian algorithm for matching the particles with their target sites in a minimal pathway. In proof-of-concept experiments, we employ APF-empowered dynamic HOTs to achieve direct assembly of a defect-free 8 × 8 array of microbeads, which starts from random initial positions. We further demonstrate successive flexible transformations of a 7 × 7 microbead array, by regulating its tilt angle and inter-particle spacing distances with a minimalist path. We anticipate that the proposed method will become a versatile tool to open up new possibilities for parallel optical micromanipulation tasks in a variety of fields.
    Xing Li, Yanlong Yang, Shaohui Yan, Wenyu Gao, Yuan Zhou, Xianghua Yu, Chen Bai, Dan Dan, Xiaohao Xu, Baoli Yao. Artificial potential field-empowered dynamic holographic optical tweezers for particle-array assembly and transformation[J]. PhotoniX, 2024, 5(1): 32
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