Laser induced surface stress on water droplets

Neng Wang, Zhifang Lin, Tsz Fai Jack Ng*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

3 Citations (Scopus)


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
Issue number20
Publication statusPublished - 6 Oct 2014

Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics


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