中国物理B ›› 2023, Vol. 32 ›› Issue (1): 14205-014205.doi: 10.1088/1674-1056/ac9de5

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Optical pulling force on nanoparticle clusters with gain due to Fano-like resonance

Jiangnan Ma(马江南)1, Feng Lv(冯侣)1, Guofu Wang(王国富)2, Zhifang Lin(林志方)3, Hongxia Zheng(郑红霞)2,3,†, and Huajin Chen(陈华金)2,3,4,‡   

  1. 1 School of Automation, Guangxi University of Science and Technology, Liuzhou 545006, China;
    2 School of Electronic Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China;
    3 State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China;
    4 Guangxi Earthmoving Machinery Collaborative Innovation Center, Liuzhou 545006, China
  • 收稿日期:2022-08-04 修回日期:2022-10-17 接受日期:2022-10-27 出版日期:2022-12-08 发布日期:2023-01-03
  • 通讯作者: Hongxia Zheng, Huajin Chen E-mail:hxzheng18@fudan.edu.cn;huajinchen13@fudan.edu.cn
  • 基金资助:
    Project supported by the Natural Science Foundation of Guangxi Province of China (Grant No. 2021GXNSFDA196001), the National Natural Science Foundation of China (Grant Nos. 12174076, 12074084, and 12204117), Guangxi Science and Technology Project (Grant Nos. AD22080042 and AB21220052), and Open Project of State Key Laboratory of Surface Physics in Fudan University (Grant No. KF2022_15).

Optical pulling force on nanoparticle clusters with gain due to Fano-like resonance

Jiangnan Ma(马江南)1, Feng Lv(冯侣)1, Guofu Wang(王国富)2, Zhifang Lin(林志方)3, Hongxia Zheng(郑红霞)2,3,†, and Huajin Chen(陈华金)2,3,4,‡   

  1. 1 School of Automation, Guangxi University of Science and Technology, Liuzhou 545006, China;
    2 School of Electronic Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China;
    3 State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China;
    4 Guangxi Earthmoving Machinery Collaborative Innovation Center, Liuzhou 545006, China
  • Received:2022-08-04 Revised:2022-10-17 Accepted:2022-10-27 Online:2022-12-08 Published:2023-01-03
  • Contact: Hongxia Zheng, Huajin Chen E-mail:hxzheng18@fudan.edu.cn;huajinchen13@fudan.edu.cn
  • Supported by:
    Project supported by the Natural Science Foundation of Guangxi Province of China (Grant No. 2021GXNSFDA196001), the National Natural Science Foundation of China (Grant Nos. 12174076, 12074084, and 12204117), Guangxi Science and Technology Project (Grant Nos. AD22080042 and AB21220052), and Open Project of State Key Laboratory of Surface Physics in Fudan University (Grant No. KF2022_15).

摘要: We demonstrate that, in a simple linearly-polarized plane wave, the optical pulling forces on nanoparticle clusters with gain can be induced by the Fano-like resonance. The numerical results based on the full-wave calculation show that the optical pulling forces can be attributed to the recoil forces for the nanoparticle clusters composed of dipolar nanoparticles with three different configurations. Interestingly, the recoil forces giving rise to optical pulling forces are exactly dominated by the coupling term between the electric and magnetic dipoles excited in the nanoparticle clusters, while other higher-order terms have a negligible contribution. In addition, the optical pulling force can be tailored by modulating the Fano-like resonance via either the particle size or the gain magnitude, offering an alternative freedom degree for optical manipulations of particle clusters.

关键词: optical pulling force, nanoparticle clusters, Fano-like resonance

Abstract: We demonstrate that, in a simple linearly-polarized plane wave, the optical pulling forces on nanoparticle clusters with gain can be induced by the Fano-like resonance. The numerical results based on the full-wave calculation show that the optical pulling forces can be attributed to the recoil forces for the nanoparticle clusters composed of dipolar nanoparticles with three different configurations. Interestingly, the recoil forces giving rise to optical pulling forces are exactly dominated by the coupling term between the electric and magnetic dipoles excited in the nanoparticle clusters, while other higher-order terms have a negligible contribution. In addition, the optical pulling force can be tailored by modulating the Fano-like resonance via either the particle size or the gain magnitude, offering an alternative freedom degree for optical manipulations of particle clusters.

Key words: optical pulling force, nanoparticle clusters, Fano-like resonance

中图分类号:  (Mechanical effects of light on material media, microstructures and particles)

  • 42.50.Wk
78.70.-g (Interactions of particles and radiation with matter) 87.80.Cc (Optical trapping) 42.25.Fx (Diffraction and scattering)