Inverse optical torques on dielectric nanoparticles in elliptically polarized light waves
Elliptically polarized light waves carry the spin angular momentum (SAM), so they can exert optical torques on nanoparticles. Usually, the rotation follows the same direction as the SAM due to momentum conservation. It is counterintuitive to observe the reversal of optical torque acting on an ordina...
Main Authors: | , , , , , , , , , , , , , , , , , , |
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Format: | Journal Article |
Language: | English |
Published: |
2023
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Online Access: | https://hdl.handle.net/10356/164115 |
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author | Shi, Yuzhi Zhu, Tongtong Liu, Ai Qun Zhou, Lei-Ming Nieto-Vesperinas, Manuel Hassanfiroozi, Amir Liu, Jingquan Tsai, Din Ping Li, Zhenyu Ding, Weiqiang Wang, Fan Li, Hang Song, Qinghua Xu, Xiaohao Li, Baojun Cheng, Xinbin Wu, Pin Chieh Chan, Che Ting Qiu, Cheng-Wei |
author2 | School of Electrical and Electronic Engineering |
author_facet | School of Electrical and Electronic Engineering Shi, Yuzhi Zhu, Tongtong Liu, Ai Qun Zhou, Lei-Ming Nieto-Vesperinas, Manuel Hassanfiroozi, Amir Liu, Jingquan Tsai, Din Ping Li, Zhenyu Ding, Weiqiang Wang, Fan Li, Hang Song, Qinghua Xu, Xiaohao Li, Baojun Cheng, Xinbin Wu, Pin Chieh Chan, Che Ting Qiu, Cheng-Wei |
author_sort | Shi, Yuzhi |
collection | NTU |
description | Elliptically polarized light waves carry the spin angular momentum (SAM), so they can exert optical torques on nanoparticles. Usually, the rotation follows the same direction as the SAM due to momentum conservation. It is counterintuitive to observe the reversal of optical torque acting on an ordinary dielectric nanoparticle illuminated by an elliptically or circularly polarized light wave. Here, we demonstrate that negative optical torques, which are opposite to the direction of SAM, can ubiquitously emerge when elliptically polarized light waves are impinged on dielectric nanoparticles obliquely. Intriguingly, the rotation can be switched between clockwise and counterclockwise directions by controlling the incident angle of light. Our study suggests a new playground to harness polarization-dependent optical force and torque for advancing optical manipulations. |
first_indexed | 2024-10-01T03:10:30Z |
format | Journal Article |
id | ntu-10356/164115 |
institution | Nanyang Technological University |
language | English |
last_indexed | 2024-10-01T03:10:30Z |
publishDate | 2023 |
record_format | dspace |
spelling | ntu-10356/1641152023-01-05T02:57:21Z Inverse optical torques on dielectric nanoparticles in elliptically polarized light waves Shi, Yuzhi Zhu, Tongtong Liu, Ai Qun Zhou, Lei-Ming Nieto-Vesperinas, Manuel Hassanfiroozi, Amir Liu, Jingquan Tsai, Din Ping Li, Zhenyu Ding, Weiqiang Wang, Fan Li, Hang Song, Qinghua Xu, Xiaohao Li, Baojun Cheng, Xinbin Wu, Pin Chieh Chan, Che Ting Qiu, Cheng-Wei School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Radiation Torque Rotation Elliptically polarized light waves carry the spin angular momentum (SAM), so they can exert optical torques on nanoparticles. Usually, the rotation follows the same direction as the SAM due to momentum conservation. It is counterintuitive to observe the reversal of optical torque acting on an ordinary dielectric nanoparticle illuminated by an elliptically or circularly polarized light wave. Here, we demonstrate that negative optical torques, which are opposite to the direction of SAM, can ubiquitously emerge when elliptically polarized light waves are impinged on dielectric nanoparticles obliquely. Intriguingly, the rotation can be switched between clockwise and counterclockwise directions by controlling the incident angle of light. Our study suggests a new playground to harness polarization-dependent optical force and torque for advancing optical manipulations. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) National Research Foundation (NRF) Published version Y. S. was Supported by the Fundamental Research Funds for the Central Universities. A. Q. L. acknowledges the Singapore Ministry of Education (MOE) Tier 3 Grant (MOE2017-T3-1-001), Singapore National Research Foundation Grant (MOH-000926), A*STAR research Grant (SERC A18A5b0056) and Singapore’s National Water Agency Grant (PUB-1804-0082). T. Z. acknowledges the Natural Science Foundation of China (NSFC), Grant No. 12104083, and Fundamental Research Funds for the Central Universities (DUT22LK27). M. N. V. acknowledges Ministerio de Ciencia, Innovación y Universidades, Grant No. PGC2018- 095777-B-C21. D. P. T. acknowledges the support from the UGC/RGC of the Hong Kong Special Administrative Region, China (Project No. AoE/P-502/20), the Department of Science and Technology of Guangdong Province (2020B1515120073), and Shenzhen Science and Technology Innovation Commission Grant (No. SGDX2019081623281169). P. C. W. acknowledges the support from the Ministry of Science and Technology (MOST), Taiwan (Grants No. 107-2923-M-006-004-MY3; No. 108-2112-M-006-021-MY3; No. 110-2124-M-006- 004), and in part from the Higher Education Sprout Project of the Ministry of Education (MOE) to the Headquarters of University Advancement at National Cheng Kung University (NCKU). P. C. W. also acknowledges the support from the Ministry of Education (Yushan Young Scholar Program), Taiwan. 2023-01-05T02:57:21Z 2023-01-05T02:57:21Z 2022 Journal Article Shi, Y., Zhu, T., Liu, A. Q., Zhou, L., Nieto-Vesperinas, M., Hassanfiroozi, A., Liu, J., Tsai, D. P., Li, Z., Ding, W., Wang, F., Li, H., Song, Q., Xu, X., Li, B., Cheng, X., Wu, P. C., Chan, C. T. & Qiu, C. (2022). Inverse optical torques on dielectric nanoparticles in elliptically polarized light waves. Physical Review Letters, 129(5), 053902-. https://dx.doi.org/10.1103/PhysRevLett.129.053902 0031-9007 https://hdl.handle.net/10356/164115 10.1103/PhysRevLett.129.053902 35960581 2-s2.0-85135718368 5 129 053902 en MOE2017-T3-1-001 MOH-000926 SERC A18A5b0056 PUB-1804-0082 Physical Review Letters © 2022 American Physical Society. All rights reserved. This paper was published in Physical Review Letters and is made available with permission of American Physical Society. application/pdf |
spellingShingle | Engineering::Electrical and electronic engineering Radiation Torque Rotation Shi, Yuzhi Zhu, Tongtong Liu, Ai Qun Zhou, Lei-Ming Nieto-Vesperinas, Manuel Hassanfiroozi, Amir Liu, Jingquan Tsai, Din Ping Li, Zhenyu Ding, Weiqiang Wang, Fan Li, Hang Song, Qinghua Xu, Xiaohao Li, Baojun Cheng, Xinbin Wu, Pin Chieh Chan, Che Ting Qiu, Cheng-Wei Inverse optical torques on dielectric nanoparticles in elliptically polarized light waves |
title | Inverse optical torques on dielectric nanoparticles in elliptically polarized light waves |
title_full | Inverse optical torques on dielectric nanoparticles in elliptically polarized light waves |
title_fullStr | Inverse optical torques on dielectric nanoparticles in elliptically polarized light waves |
title_full_unstemmed | Inverse optical torques on dielectric nanoparticles in elliptically polarized light waves |
title_short | Inverse optical torques on dielectric nanoparticles in elliptically polarized light waves |
title_sort | inverse optical torques on dielectric nanoparticles in elliptically polarized light waves |
topic | Engineering::Electrical and electronic engineering Radiation Torque Rotation |
url | https://hdl.handle.net/10356/164115 |
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