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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 17, Iss. 6 — Jun. 1, 2000
  • pp: 904–909

Characterization of two-dimensional colloidal polycrystalline materials using optical diffraction

Ivan Avrutsky, Bing Li, and Yang Zhao  »View Author Affiliations


JOSA B, Vol. 17, Issue 6, pp. 904-909 (2000)
http://dx.doi.org/10.1364/JOSAB.17.000904


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Abstract

We present an optical-diffraction method for quantitative characterization of two-dimensional colloidal polycrystalline materials. From the angular-diffraction profile we can estimate both the average size of the crystalline grain and the defect density within the grains. Our statistical diffraction model shows that the diffraction line shape is close to a Lorentzian profile if a lot of defects exist within a grain, and it becomes close to Gaussian if the grains are essentially free of defects. This method is used for analyzing the quality of polystyrene colloidal crystals produced by the evaporation technique. The results are compared with direct statistical analysis of microscope images.

© 2000 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(050.2770) Diffraction and gratings : Gratings
(070.2590) Fourier optics and signal processing : ABCD transforms

Citation
Ivan Avrutsky, Bing Li, and Yang Zhao, "Characterization of two-dimensional colloidal polycrystalline materials using optical diffraction," J. Opt. Soc. Am. B 17, 904-909 (2000)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-17-6-904


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