Deep optical penetration dynamics in photobending.
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Peer-reviewed
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Abstract
We model both the photostationary state and dynamics of an illuminated, photosensitive, glassy liquid crystalline sheet. To illustrate the interplay between local tilt θ of the sheet, effective incident intensity, curvature, and dynamics, we adopt the simplest variation of local incident light intensity with angle, that is, cosθ. The tilt in the stationary state never overshoots the vertical, but maximum curvature could be seen in the middle of the sheet for intense light. In dynamics, overshoot and self-eclipsing arise, revealing how important moving fronts of light penetration are. Eclipsing is qualitatively as in the experiments of Yu et al. [Y. Yu, M. Nakano, and T. Ikeda, Nature (London) 425, 145 (2003)].
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Keywords
Light, Liquid Crystals, Models, Theoretical, Optical Phenomena
Journal Title
Phys Rev E Stat Nonlin Soft Matter Phys
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Journal ISSN
1539-3755
1550-2376
1550-2376
Volume Title
92
Publisher
American Physical Society (APS)
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Sponsorship
Engineering and Physical Sciences Research Council (EP/E051251/1)
Engineering and Physical Sciences Research Council (EP/J017639/1)
Engineering and Physical Sciences Research Council (EP/J017639/1)
BBSRC