PMID: 15244800Jul 13, 2004Paper

Generation, propagation, and switching of orientational waves in photoexcited liquid-crystalline monolayers

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Tohru OkuzonoHiroshi Yokoyama

Abstract

Photoinduced orientational waves in illuminated liquid-crystalline monolayers is one of the most remarkable far-from-equilibrium phenomena that systems of soft condensed matter exhibit. We model this behavior from a phenomenological point of view, taking the anisotropic photoexcitation of molecules into account. Numerical simulations as well as theoretical analyses of the model reveal that the intricate interplay between the spontaneous splay deformation of the liquid-crystalline order and the anisotropy of the photoexcitation can lead to the generation and propagation of orientational waves. The model can explain all the salient features of the phenomenon-in particular, the anomalous reversal of the propagation direction upon 90 degrees rotation of the polarization direction of illumination, which evaded theoretical explanation for nearly a decade.

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Citations

Jul 23, 2005·The Journal of Chemical Physics·Joaquim CrusatsFrancesc Sagués
Oct 4, 2006·Chaos·Tatsuo Shibata, Alexander S Mikhailov
Dec 2, 2008·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Alexander S Mikhailov, Gerhard Ertl
Dec 31, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Takao Ohta, Hidekazu Tokuda
Dec 11, 2014·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Karin JohnMarkus Bär
Apr 12, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Josep ClaretJoaquim Crusats

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