ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Optical manipulation of gold nanoparticles using an optical nanofiber |
Li Ying (李英), Hu Yan-Jun (胡艳军) |
School of Information Engineering, Guangdong Medical College, Dongguan 523808, China |
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Abstract Gold nanoparticles are gaining increasing attention due to their biological and medical applications. In this letter, we experimentally demonstrate an optical manipulation of 250-nm-diameter gold nanoparticles along an optical nanofiber (550 nm in diameter) injected by an 808-nm laser light. The nanoparticles situated in the evanescent optical field are trapped by optical gradient force and move along the direction of light propagation due to optical scattering force. The velocities reach as high as 132 μm/s at an optical power of 80 mW.
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Received: 24 July 2012
Revised: 30 August 2012
Accepted manuscript online:
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PACS:
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42.81.Qb
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(Fiber waveguides, couplers, and arrays)
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87.80.Ek
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(Mechanical and micromechanical techniques)
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78.67.Uh
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(Nanowires)
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Corresponding Authors:
Li Ying
E-mail: xingziliying@126.com
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Cite this article:
Li Ying (李英), Hu Yan-Jun (胡艳军) Optical manipulation of gold nanoparticles using an optical nanofiber 2013 Chin. Phys. B 22 034206
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