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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 23 — Nov. 12, 2007
  • pp: 15250–15259

Adaptive Speckle Imaging Interferometry: a new technique for the analysis of micro-structure dynamics, drying processes and coating formation

L. Brunel, A. Brun, P. Snabre, and L. Cipelletti  »View Author Affiliations

Optics Express, Vol. 15, Issue 23, pp. 15250-15259 (2007)

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We describe an extension of multi-speckle diffusing wave spectroscopy adapted to follow the non-stationary microscopic dynamics in drying films and coatings in a very reactive way and with a high dynamic range. We call this technique “Adaptive Speckle Imaging Interferometry”. We introduce an efficient tool, the inter-image distance, to evaluate the speckle dynamics, and the concept of “speckle rate” (SR, in Hz) to quantify this dynamics. The adaptive algorithm plots a simple kinetics, the time evolution of the SR, providing a non-invasive characterization of drying phenomena. A new commercial instrument, called HORUS®, based on ASII and specialized in the analysis of film formation and drying processes is presented.

© 2007 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(030.6600) Coherence and statistical optics : Statistical optics
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry
(290.0290) Scattering : Scattering
(290.4210) Scattering : Multiple scattering
(290.5850) Scattering : Scattering, particles

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: September 21, 2007
Revised Manuscript: October 31, 2007
Manuscript Accepted: October 31, 2007
Published: November 2, 2007

L. Brunel, A. Brun, P. Snabre, and L. Cipelletti, "Adaptive Speckle Imaging Interferometry: a new technique for the analysis of microstructure dynamics, drying processes and coating formation," Opt. Express 15, 15250-15259 (2007)

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