期刊
OPTICS LETTERS
卷 37, 期 10, 页码 1694-1696出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.37.001694
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资金
- 973 Program of China [2011CB922002]
- Chinese Academy of Sciences [Y1V2013L11]
- National Natural Science Foundation of China [11104342]
Optical trapping of gold nanoparticles is experimentally demonstrated using radially and azimuthally polarized beams. The transverse optical trapping stiffness of gold nanoparticles is measured. The radially polarized beam exhibits a higher trapping efficiency than the azimuthally polarized beam and the Gaussian beam. The transverse stiffness of particles with different diameters is measured experimentally and calculated via the discrete-dipole approximation method, and good agreement between theory and experiment is found. (C) 2012 Optical Society of America
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