Light-driven dynamic Archimedes spirals and periodic oscillatory patterns of topological solitons in anisotropic soft matter [electronic resource]

Liquid Crystals; Nonlinear Optical Materials; Nonlinear Optics At Surfaces; Anisotropic Optical Materials.

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Bibliographic Details
Online Access: Online Access (via OSTI)
Corporate Author: National Renewable Energy Laboratory (U.S.) (Researcher)
Format: Government Document Electronic eBook
Language:English
Published: Arlington, Va. : Oak Ridge, Tenn. : National Science Foundation (U.S.) ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, 2015.
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MARC

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245 0 0 |a Light-driven dynamic Archimedes spirals and periodic oscillatory patterns of topological solitons in anisotropic soft matter  |h [electronic resource] 
260 |a Arlington, Va. :  |b National Science Foundation (U.S.) ;  |a Oak Ridge, Tenn. :  |b distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,  |c 2015. 
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500 |a 02/12/2015. 
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500 |a Optics Express 23 4 ISSN 1094-4087 AM. 
500 |a Angel Martinez; Ivan I. Smalyukh. 
520 3 |a Oscillatory and excitable systems very commonly exhibit formation of dynamic non-equilibrium patterns. For example, rotating spiral patterns are observed in biological, chemical, and physical systems ranging from organization of slime mold cells to Belousov-Zhabotinsky reactions, and to crystal growth from nuclei with screw dislocations. Here we describe spontaneous formation of spiral waves and a large variety of other dynamic patterns in anisotropic soft matter driven by low-intensity light. The unstructured ambient or microscope light illumination of thin liquid crystal films in contact with a self-assembled azobenzene monolayer causes spontaneous formation, rich spatial organization, and dynamics of twisted domains and topological solitons accompanied by the dynamic patterning of azobenzene group orientations within the monolayer. Linearly polarized incident light interacts with the twisted liquid crystalline domains, mimicking their dynamics and yielding patterns in the polarization state of transmitted light, which can be transformed to similar dynamic patterns in its intensity and interference color. This shows that the delicate light-soft-matter interaction can yield complex self-patterning of both. Finally, we uncover underpinning physical mechanisms and discuss potential uses. 
520 0 |a Liquid Crystals; Nonlinear Optical Materials; Nonlinear Optics At Surfaces; Anisotropic Optical Materials. 
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710 2 |a National Renewable Energy Laboratory (U.S.).  |4 res. 
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