Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
권호 표지

Enhanced evanescent field force on Mie particles by coupling with surface plasmons

표면 플라즈몬과 결합된 에바네슨트파가 Mie입자에 미치는 광압 분석

  • 송영곤 (한남대학교 물리학과) ;
  • 한봉명 (한남대학교 물리학과) ;
  • 장수 (한남대학교 물리학과)
  • Published : 2001.12.01
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Abstract

We examine theoretically the properties of the force on Mie particles induced by evanescent fields at a system of multilayer films (including a metal film), at which the surface plasmon resonance is excited by a p-polarized plane electromagnetic wave. An expression of the surface plasmon-coupled evanescent fields produced in Kretschmann (or Sarid) geometry is expanded in terms of vector spherical wave functions, while multiple reflections between the Mie particle and the metal boundary are taken into account. The Cartesian components of the force on Mie particles by the evanescent fields are analytically formulated and numerically evaluated. The force components are increased by one or two orders of magnitude at metal boundaries over those at dielectric boundaries. As a result, we can confirm the possibility of stable manipulation or rotation of a finite-sized object by forces of surface plasmon-coupled evanescent fields.

Keywords

References

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