期刊
APPLIED PHYSICS LETTERS
卷 101, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4751464
关键词
-
资金
- Natural Science Foundation of China (NSFC) [90923037, 61137001]
A light driven micro-rotor is a useful telecontrolled device free of mechanical contact for power supply. However, low efficiency in converting light to mechanical power detracts from its advantages because it incurs a high power consumption that might result in unwanted effects. For a systematic study on conversion efficiency, we designed a turbine-like micro-rotor and made a quantitative analysis by computational fluid dynamics and semiclassical optics. Much larger in size than those ever reported, our rotor could rotate at over 500 r/min. Denoted by average angular momentum transfer, its conversion efficiency was experimentally determined as high as 34.55 (h) over bar /photon. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4751464]
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