Subwavelength-scale off-axis optical nanomanipulation within Gaussian-beam traps
It is generally recognized that there is only a single optical potential-well near the focus in optical traps with a focused Gaussian beam. In this work, we show that this classic Gaussian-beam optical trap has additional optical potential-wells for optical manipulation at the subwavelength scale in...
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| Format: | Article |
| Language: | English |
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De Gruyter
2025-01-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2024-0527 |
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| author | Zhou Lei-Ming Sun Wan Tao Zong-Qiang Xiong Ning-Jun Huang Chan Jiang Xiao-Yun Ren Yu-Xuan Yang Yuanjie Shi Yu-Zhi Hu Ji-Gang Zhan Qiwen |
| author_facet | Zhou Lei-Ming Sun Wan Tao Zong-Qiang Xiong Ning-Jun Huang Chan Jiang Xiao-Yun Ren Yu-Xuan Yang Yuanjie Shi Yu-Zhi Hu Ji-Gang Zhan Qiwen |
| author_sort | Zhou Lei-Ming |
| collection | DOAJ |
| description | It is generally recognized that there is only a single optical potential-well near the focus in optical traps with a focused Gaussian beam. In this work, we show that this classic Gaussian-beam optical trap has additional optical potential-wells for optical manipulation at the subwavelength scale in the off-focus transverse plane. The additional optical potential-wells are formed by the synergy of both the gradient trapping force and the transverse scattering force, though in previous studies the scattering force usually has adverse effect such as reducing trapping stability. These potential-wells work for not only the metallic particles, but also the high refractive-index dielectric particles. By engineering the contribution of the gradient force and scattering force through the particle size, the particle material and the position of the manipulation transverse plane, the force field and trapping potential-well can be tailored to trap/manipulate nanoparticles at different off-axis distance at the subwavelength scale. Our work provides new insight into optical tweezers and promises applications in optical nanomanipulation, nanoparticle sorting/separation, particle patterning and micro-fabrication on substrates. |
| format | Article |
| id | doaj-art-073c243c375a4c039dc29f4a1abdc98c |
| institution | Kabale University |
| issn | 2192-8614 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-073c243c375a4c039dc29f4a1abdc98c2025-02-10T13:24:47ZengDe GruyterNanophotonics2192-86142025-01-0114221922810.1515/nanoph-2024-0527Subwavelength-scale off-axis optical nanomanipulation within Gaussian-beam trapsZhou Lei-Ming0Sun Wan1Tao Zong-Qiang2Xiong Ning-Jun3Huang Chan4Jiang Xiao-Yun5Ren Yu-Xuan6Yang Yuanjie7Shi Yu-Zhi8Hu Ji-Gang9Zhan Qiwen10Department of Optical Engineering, School of Physics, 558979Hefei University of Technology, Hefei, Anhui230601, ChinaDepartment of Optical Engineering, School of Physics, 558979Hefei University of Technology, Hefei, Anhui230601, ChinaDepartment of Optical Engineering, School of Physics, 558979Hefei University of Technology, Hefei, Anhui230601, ChinaDepartment of Optical Engineering, School of Physics, 558979Hefei University of Technology, Hefei, Anhui230601, ChinaDepartment of Optical Engineering, School of Physics, 558979Hefei University of Technology, Hefei, Anhui230601, ChinaDepartment of Optical Engineering, School of Physics, 558979Hefei University of Technology, Hefei, Anhui230601, ChinaInstitute for Translational Brain Research, MOE Frontiers Center for Brain Science, Fudan University, Shanghai, 200032, ChinaSchool of Physics, University of Electronic Science and Technology of China, Chengdu611731, ChinaInstitute of Precision Optical Engineering, School of Physics Science and Engineering, Tongji University, Shanghai200092, ChinaDepartment of Optical Engineering, School of Physics, 558979Hefei University of Technology, Hefei, Anhui230601, ChinaSchool of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai200093, ChinaIt is generally recognized that there is only a single optical potential-well near the focus in optical traps with a focused Gaussian beam. In this work, we show that this classic Gaussian-beam optical trap has additional optical potential-wells for optical manipulation at the subwavelength scale in the off-focus transverse plane. The additional optical potential-wells are formed by the synergy of both the gradient trapping force and the transverse scattering force, though in previous studies the scattering force usually has adverse effect such as reducing trapping stability. These potential-wells work for not only the metallic particles, but also the high refractive-index dielectric particles. By engineering the contribution of the gradient force and scattering force through the particle size, the particle material and the position of the manipulation transverse plane, the force field and trapping potential-well can be tailored to trap/manipulate nanoparticles at different off-axis distance at the subwavelength scale. Our work provides new insight into optical tweezers and promises applications in optical nanomanipulation, nanoparticle sorting/separation, particle patterning and micro-fabrication on substrates.https://doi.org/10.1515/nanoph-2024-0527optical manipulationoff-axis trappingtransverse scattering forcemultiple potential-wellsparticle sorting |
| spellingShingle | Zhou Lei-Ming Sun Wan Tao Zong-Qiang Xiong Ning-Jun Huang Chan Jiang Xiao-Yun Ren Yu-Xuan Yang Yuanjie Shi Yu-Zhi Hu Ji-Gang Zhan Qiwen Subwavelength-scale off-axis optical nanomanipulation within Gaussian-beam traps Nanophotonics optical manipulation off-axis trapping transverse scattering force multiple potential-wells particle sorting |
| title | Subwavelength-scale off-axis optical nanomanipulation within Gaussian-beam traps |
| title_full | Subwavelength-scale off-axis optical nanomanipulation within Gaussian-beam traps |
| title_fullStr | Subwavelength-scale off-axis optical nanomanipulation within Gaussian-beam traps |
| title_full_unstemmed | Subwavelength-scale off-axis optical nanomanipulation within Gaussian-beam traps |
| title_short | Subwavelength-scale off-axis optical nanomanipulation within Gaussian-beam traps |
| title_sort | subwavelength scale off axis optical nanomanipulation within gaussian beam traps |
| topic | optical manipulation off-axis trapping transverse scattering force multiple potential-wells particle sorting |
| url | https://doi.org/10.1515/nanoph-2024-0527 |
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