Laser induced surface stress on water droplets

Neng Wang*, Zhifang Lin, Tsz Fai Jack NG

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Laser induced stress on spherical water droplets is studied. At mechanical equilibrium, the body stress vanishes therefore we consider only the surface stress. The surface stress on sub-wavelength droplets is slightly weaker along the light propagation direction. For larger droplets, due to their light focusing effect, the forward stress is significantly enhanced. For a particle roughly 3 micron in radius, when it is excited at whispering gallery mode with Q ∼ 104 by a 1 Watt Gaussian beam, the stress can be enhanced by two orders of magnitude, and can be comparable with the Laplace pressure.

Original languageEnglish
Pages (from-to)23770-23775
Number of pages6
JournalOptics Express
Volume22
Issue number20
DOIs
Publication statusPublished - 6 Oct 2014

Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics

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