期刊
APPLIED PHYSICS LETTERS
卷 101, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4737441
关键词
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资金
- Australian Research Council
We study the opto-mechanical properties of coupled chiral meta-atoms based on a pair of twisted split-ring resonators. By using a simple analytical model in conjunction with the Maxwell stress tensor, we capture insight into the mechanism and find that this structure can be used as a general prototype of subwavelength light-driven actuators over a wide range of frequencies. This coupled structure can provide a strong and tunable torque, and can support different opto-mechanical modes, including uniform rotation, periodically variable rotation and damped oscillations. Our results suggest that chiral meta-atoms are good candidates for creating sub-wavelength motors or wrenches controlled by light. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4737441]
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