Phys. Rev. Lett. 85, 4622–4625 (2000)

Acoustic Excitations in Suspensions of Soft Colloids

Abstract

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Citing Articles (12)

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R. S. Penciu^2,*, G. Fytas^1,3, E. N. Economou^1,2, W. Steffen³, and S. N. Yannopoulos⁴
¹FO.R.T.H., Institute of Electronic Structure and Laser, P.O. Box 1527, 71110, Heraklion, Crete, Greece
²Physics Department, University of Crete, Greece
³Max-Planck Institute for Polymer Research, P.O. Box 3148, 55128 Mainz, Germany
⁴FO.R.T.H., Institute of Chemical Engineering, P.O. Box 1414, 26500 Patras, Greece

Received 11 August 2000; published in the issue dated 20 November 2000

Vibrational modes in suspensions of soft colloids in a fluid can be detected experimentally by Brillouin light scattering. Besides the usual acoustic mode, being essentially the longitudinal phonon of the liquid matrix, an “opticlike” mode is observed in giant starlike micelles at low volume fractions. We propose that this opticlike mode is due mainly to the internal vibration of each hairy particle.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.85.4622

DOI:

10.1103/PhysRevLett.85.4622

PACS:

82.70.Dd, 62.30.+d, 83.70.Hq

^*Permanent address: National Institute for Research and Development in Materials Physics, Bucharest, Romania.

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Phys. Rev. Lett. 85, 4622–4625 (2000)

Acoustic Excitations in Suspensions of Soft Colloids