Microfluidics and Nanofluidics

, Volume 11, Issue 6, pp 781–785

Microsecond-scale switching time of magnetic fluids due to the optical trapping effect in waveguide structure

  • Wen Yuan
  • Cheng Yin
  • Pingping Xiao
  • Xianping Wang
  • Jingjing Sun
  • Sangming Huang
  • Xianfeng Chen
  • Zhuangqi Cao
Short Communication

DOI: 10.1007/s10404-011-0844-z

Cite this article as:
Yuan, W., Yin, C., Xiao, P. et al. Microfluid Nanofluid (2011) 11: 781. doi:10.1007/s10404-011-0844-z

Abstract

Instead of the conventional method of monitoring the transmitted light through a ferrofluid film, in this study we use ferrofluids as the guiding layer in a double metal-cladding optical waveguide structure, and measure the reflected light intensity to investigate the chain formation speed (switching speed) in ferrofluids. We conclude that the ultrahigh-order mode-induced optical trapping effect may be the main reason for the observed fast switching time which is increased by at least three orders of magnitude when a magnetic field was applied.

Keywords

Ferrofluids Optical waveguide Optical trapping effect 

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Wen Yuan
    • 1
    • 2
    • 3
  • Cheng Yin
    • 1
    • 2
  • Pingping Xiao
    • 1
    • 2
    • 4
  • Xianping Wang
    • 1
    • 2
  • Jingjing Sun
    • 1
    • 2
  • Sangming Huang
    • 3
  • Xianfeng Chen
    • 1
    • 2
  • Zhuangqi Cao
    • 1
    • 2
  1. 1.Department of PhysicsJiaoTong UniversityShanghaiChina
  2. 2.The State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication SystemsJiaoTong UniversityShanghaiChina
  3. 3.School of Physics and Communication ElectronicsJiangxi Normal UniversityNanchangChina
  4. 4.School of Physics Science and Engineering TechnologyYichun UniversityYichunChina

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