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Title: Light-driven dynamic Archimedes spirals and periodic oscillatory patterns of topological solitons in anisotropic soft matter

Journal Article · · Optics Express
DOI:https://doi.org/10.1364/OE.23.004591· OSTI ID:1220725
 [1];  [2]
  1. Univ. of Colorado, Boulder, CO (United States). Dept. of Physics; Univ. of Colorado, Boulder, CO (United States). Liquid Crystal Materials Research Center
  2. Univ. of Colorado, Boulder, CO (United States). Dept. of Physics; Univ. of Colorado, Boulder, CO (United States). Liquid Crystal Materials Research Center; Univ. of Colorado, Boulder, CO (United States). Dept. of Electrical, Computer, and Energy Engineering and Materials Science and Engineering Program; National Renewable Energy Lab. (NREL), Golden, CO (United States) and Univ. of Colorado, Boulder, CO (United States). Renewable and Sustainable Energy Inst.

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.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States); Univ. of Colorado, Boulder, CO (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
DGE-0801680; ER46921
OSTI ID:
1220725
Report Number(s):
NREL/JA-5900-64056
Journal Information:
Optics Express, Vol. 23, Issue 4; ISSN 1094-4087
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

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Cited By (12)

Light-Driven Electrohydrodynamic Instabilities in Liquid Crystals journal April 2018
Making waves in a photoactive polymer film journal June 2017
Squirming motion of baby skyrmions in nematic fluids journal September 2017
Self-assembled nematic colloidal motors powered by light journal November 2018
Revolving supramolecular chiral structures powered by light in nanomotor-doped liquid crystals journal February 2018
Near-field imaging of surface-plasmon vortex-modes around a single elliptical nanohole in a gold film journal March 2019
Surface induced twist in nematic and chiral nematic liquid crystals: stick-slip-like and constrained motion journal January 2018
Effect of dynamically changing the substrate’s easy axis on the response time of nematic samples journal November 2018
Multiple minimum-energy paths and scenarios of unwinding transitions in chiral nematic liquid crystals journal December 2019
Near-field imaging of surface-plasmon vortex-modes around a single elliptical nanohole in a gold film preprint January 2018
Multiple minimum energy paths and scenarios of unwinding transitions in chiral nematic liquid crystals text January 2019
Self-assembled nematic colloidal motors powered by light text January 2020


Figures / Tables (7)


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