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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 24 — Nov. 24, 2008
  • pp: 19741–19756

Rigorous theoretical framework for particle sizing in turbid colloids using light refraction

Augusto García-Valenzuela, Rubén G. Barrera, and Edahí Gutierrez-Reyes  »View Author Affiliations

Optics Express, Vol. 16, Issue 24, pp. 19741-19756 (2008)

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Using a non-local effective-medium approach, we analyze the refraction of light in a colloidal medium. We discuss the theoretical grounds and all the necessary precautions to design and perform experiments to measure the effective refractive index in dilute colloids. As an application, we show that it is possible to retrieve the size of small dielectric particles in a colloid by measuring the complex effective refractive index and the volume fraction occupied by the particles.

© 2008 Optical Society of America

OCIS Codes
(160.4760) Materials : Optical properties
(290.3030) Scattering : Index measurements
(290.7050) Scattering : Turbid media
(050.2065) Diffraction and gratings : Effective medium theory
(160.2710) Materials : Inhomogeneous optical media

ToC Category:

Original Manuscript: July 7, 2008
Revised Manuscript: August 18, 2008
Manuscript Accepted: August 23, 2008
Published: November 14, 2008

Augusto García-Valenzuela, Rubén G. Barrera, and Edahí Gutierrez-Reyes, "Rigorous theoretical framework for particle sizing in turbid colloids using light refraction," Opt. Express 16, 19741-19756 (2008)

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