Giant and tunable optical torque for micro-motors by increased force arm and resonantly enhanced force.
Giant and tunable optical torque for micro-motors by increased force arm and resonantly enhanced force.
复制标题
通过增加力臂和共振增强力为微电机提供巨大且可调的光学扭矩
DOI：
10.1038/s41598-018-21235-x
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发表时间：
2018-02-12
影响因子：
4.6
通讯作者：
Ding W
中科院分区：
文献类型：
--
作者：
Geng Y;Tan J;Cao Y;Zhao Y;Liu Z;Ding W
Micro-motors driven by light field have attracted much attentions for their potential applications. In order to drive the rotation of a micro-motor, structured optical beams with orbital angular momentum, spin angular momentum, anisotropic medium, and/or inhomogeneous intensity distribution should be used. Even though, it is still challenge to increase the optical torques (OT) in a flexible and controllable way in case of moderate incident power. In this paper, a new scheme achieving giant optical torque is proposed by increasing both the force arm and the force amplitude with the assistance of a ring resonator. In this case, the optical torque doesn’t act on the target directly by the incident beam, but is transmitted to it by rotating the ring resonator connected with it. Using the finite-difference in time-domain method, we calculate the optical torque and find that both the direction and the amplitude of the torque can be tuned flexibly by modifying the frequency, or the relative phases of the sources. More importantly, the optical torque obtained here by linearly polarized beams can be 3 orders larger than those obtained using the structured beams. This opt-mechanical-resonator based optical torque engineering system may find potential applications in optical driven micro-machines.
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影响因子：
8.6
作者：
ASHKIN, A
通讯作者：
ASHKIN, A
影响因子：
8.6
作者：
BABIKER, M;POWER, WL;ALLEN, L
通讯作者：
ALLEN, L
影响因子：
4
作者：
Harada, T;Yoshikawa, K
通讯作者：
Yoshikawa, K
影响因子：
3.6
作者：
Intaraprasonk, Varat;Fan, Shanhui
通讯作者：
Fan, Shanhui
DOI：
10.1016/j.jqsrt.2015.03.030
发表时间：
2015-09-01
影响因子：
2.3
作者：
Liaw, Jiunn-Woei;Lo, Wei-Jiun;Kuo, Mao-Kuen
通讯作者：
Kuo, Mao-Kuen