Optically induced rotation of a trapped micro-object about an axis perpendicular to the laser beam axis
作者:
E. Higurashi,
R. Sawada,
T. Ito,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 72,
issue 23
页码: 2951-2953
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.121504
出版商: AIP
数据来源: AIP
摘要:
A strongly focused Nd:YAG laser beam has been used experimentally to achieve optical trapping and simultaneous rotation of a micro-object about an axis perpendicular to the trapping laser beam axis. The micro-object (12 &mgr;m in diameter), which has shape anisotropy in its interior, can be produced by oxygen reactive ion etching of a fluorinated polyimide film (refractive indexn=1.53). This optically induced rotation of the micro-object in ethanol (n=1.36) is accomplished by utilizing the net radiation pressure force arising from the momentum change of light scattered at the micro-object’s inner walls. ©1998 American Institute of Physics.
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