Inverse optical torques on dielectric nanoparticles in elliptically polarized light waves

• Main Authors: 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
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2023
• Subjects: Engineering::Electrical and electronic engineering; Radiation Torque; Rotation
• Online Access: https://hdl.handle.net/10356/164115
• Institution: Nanyang Technological University

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...