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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 45, Iss. 29 — Oct. 10, 2006
  • pp: 7652–7656

Investigation of concentrically and eccentrically layered droplets by light scattering

Haohua Tu and Asit K. Ray  »View Author Affiliations


Applied Optics, Vol. 45, Issue 29, pp. 7652-7656 (2006)
http://dx.doi.org/10.1364/AO.45.007652


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Abstract

Two pairs of immiscible liquid compounds are chosen to prepare levitated layered droplets with and without density difference between core and layer phases. The droplets are examined by light scattering along two orthogonal directions. A layered droplet without phase density difference is unambiguously identified as a concentric sphere by matching the observed scattering spectra with those calculated from the Aden–Kerker extension of Mie theory. For layered droplets with phase density difference, only the scattering spectrum from one of the scattering directions can be matched theoretically. These observations suggest that a static layered droplet is predominantly eccentric even though the embedded core is large by volume, as predicted from fluid mechanics. The consistency of the light-scattering characterization with the diffusion theory governing the evaporation of concentrically and eccentrically layered droplets is also established.

© 2006 Optical Society of America

OCIS Codes
(290.1090) Scattering : Aerosol and cloud effects
(290.5820) Scattering : Scattering measurements

History
Original Manuscript: April 6, 2006
Manuscript Accepted: May 31, 2006

Citation
Haohua Tu and Asit K. Ray, "Investigation of concentrically and eccentrically layered droplets by light scattering," Appl. Opt. 45, 7652-7656 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-29-7652

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