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Optics Letters

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  • Vol. 24, Iss. 3 — Feb. 1, 1999
  • pp: 121–123

Homogeneous polymer blend microparticles with a tunable refractive index

M. D. Barnes, C.-Y. Kung, N. Lermer, K. Fukui, B. G. Sumpter, D. W. Noid, and J. U. Otaigbe  »View Author Affiliations


Optics Letters, Vol. 24, Issue 3, pp. 121-123 (1999)
http://dx.doi.org/10.1364/OL.24.000121


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Abstract

We show that homogeneous polymer blend microparticles can be prepared in situ from droplets of dilute solution of codissolved polymers. Provided that the droplet of solution is small enough (<10 μm), solvent evaporation is rapid enough to inhibit phase separation. Thus the polymers that are being mixed need not be miscible, which greatly enhances the applicability of the technique. From analysis of two-dimensional Fraunhofer diffraction (angular scattering) patterns, we show that both the real and the imaginary parts of the refractive index can be tuned by adjustment of the relative weight fractions of polymers in solution.

© 1999 Optical Society of America

OCIS Codes
(160.5470) Materials : Polymers
(290.5850) Scattering : Scattering, particles

Citation
M. D. Barnes, C.-Y. Kung, N. Lermer, K. Fukui, B. G. Sumpter, D. W. Noid, and J. U. Otaigbe, "Homogeneous polymer blend microparticles with a tunable refractive index," Opt. Lett. 24, 121-123 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-3-121


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