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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 5 — Mar. 1, 2010
  • pp: 625–627

Effect of thermal stress slip on microparticle photophoresis in gaseous media

Chyi-Yeou Soong, Wen-Ken Li, Chung-Ho Liu, and Pei-Yuan Tzeng  »View Author Affiliations

Optics Letters, Vol. 35, Issue 5, pp. 625-627 (2010)

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This Letter presents a study on photophoresis of a microparticle in gaseous media with focus on the effect of thermal stress slip, which is deemed as one of factors causing deviations of previous theoretical predictions from measurements. The present modified theory agrees well with the measurements and, combining with 1 order-of-magnitude analysis, demonstrates the significance of the thermal stress slip in photophoresis of a particle, especially, of small radius. With the physical mechanisms addressed, the parametric analysis reveals that this interfacial thermal effect becomes more pronounced with reducing thermal conductivity of the particle and increasing Knudsen number as well.

© 2010 Optical Society of America

OCIS Codes
(350.4990) Other areas of optics : Particles
(350.5340) Other areas of optics : Photothermal effects

ToC Category:
Fiber Optics

Original Manuscript: September 21, 2009
Manuscript Accepted: January 12, 2010
Published: February 19, 2010

Chyi-Yeou Soong, Wen-Ken Li, Chung-Ho Liu, and Pei-Yuan Tzeng, "Effect of thermal stress slip on microparticle photophoresis in gaseous media," Opt. Lett. 35, 625-627 (2010)

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