Abstract
Laser-induced space-time dynamics of nanoparticles of a magnetofluid was observed. Visualization was effectuated and the redistribution of the particles was measured. These showed a strong decrease in the particle density on and around the periphery of the laser beam axis. A number of proofs showing that the thermal diffusion of nanoparticles plays the key role in determining the dynamics of the particle redistribution are presented. High-quality pictures taken of the self-modulation of the laser beam serve as a new and powerful method for investigating transport phenomena and the nonlinear interaction of light with colloids.
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References
I. C. Khoo, Opt. Lett. 20, 2137 (1995).
Janossy, Phys. Rev. E 49, 2957 (1994).
D. Voloshschenko et al., Jpn. J. Appl. Phys. 34, 566 (1995).
G. Golemme et al., Opt. Lett. 22, 1226 (1997).
S. R. Sutherland et al., Appl. Phys. Lett. 64, 1074 (1994).
M. Kreuzer et al., Appl. Phys. Lett. 62, 1712 (1993).
T. Du, S. Yuan, and W. Luo, Appl. Phys. Lett. 65, 1844 (1994).
T. Du and W. Luo, Mod. Phys. Lett. B 9, 1643 (1995).
J. C. Bacri et al., Phys. Rev. Lett. 74, 5032 (1995).
F. B. Dabby et al., Appl. Phys. Lett. 16, 362 (1970).
N. V. Tabiryan, B. Ya. Zel’dovich, and A. V. Sukhov, The Orientational Optical Nonlinearity of Liquid Crystals (Special Issue of Mol. Cryst. Liquid Cryst., 136, No. 1, 1986).
V. Carbone et al., Phys. Rev. E 47, 3741 (1993).
E. Santamato et al., Phys. Rev. Lett. 64, 1377 (1990).
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Pis’ma Zh. Éksp. Teor. Fiz. 68, No. 7, 594–598 (10 October 1998)