Phase diagrams of orientational transitions in absorbing nematic liquid crystals

Journal Article · Fri May 15 04:00:00 EDT 2015 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776115040196· OSTI ID:22472255

Ochkin, V. N.; Smayev, M. P.; Shvetsov, S. A. ^[1]

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1. Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)

A theory of orientational transitions in nematic liquid crystals (NLCs), which employs the expansion of optical torques acting on the NLC director with respect to the rotation angle, has been developed for NLCs with additives of conformationally active compounds under the action of optical and low-frequency electric and magnetic fields. Phase diagrams of NLCs are constructed as a function of the intensity and polarization of the light field, the strength of low-frequency electric field, and a parameter that characterizes the feedback between the rotation of the NLC director and optical torque. Conditions for the occurrence of first- and second-order transitions are determined. The proposed theory agrees with available experimental data.

• OSTI ID: 22472255
• Journal Information: Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 5 Vol. 120; ISSN JTPHES; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADDITIVES
ELECTRIC FIELDS
EXPANSION
FEEDBACK
LIQUID CRYSTALS
MAGNETIC FIELDS
PHASE DIAGRAMS
POLARIZATION
ROTATION
TORQUE
VISIBLE RADIATION