Effect of an electric field on the structural and optical properties of fluorinated freely suspended smectic films

Journal Article · Fri Dec 15 00:00:00 EST 2017 · Physics of the Solid State

DOI:https://doi.org/10.1134/S1063783417120290· OSTI ID:22771652

Śliwa, I. ^[1]

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1. Polish Academy of Sciences, Institute of Molecular Physics (Poland)

Within the framework of the generalized mean-field model that takes into account the anisotropic interactions between the nearest neighbors of molecules forming freely suspended smectic films (FSSFs) and the stabilizing effects of the smectic-A (SmA)–air interface, a numerical study was performed of the structural, thermodynamic, and optical properties of these systems in the process of their layer-by-layer thinning. The results of calculating the disjoining pressure P, the average thickness of the smectic layers L, and the reflectivity index R of a FSSF formed by 5-n-alkyl-2-(4-n-(perfluoroalkyl-methylene oxide)-pentyl) (H10F5MOPP) molecules showed that these values undergo precipitous changes in the process of layer-bylayer thinning of the film. Calculations of R(T) as a function of temperature T exceeding the phase transition temperature of SmA into an isotropic state in the bulk of the liquid crystal material are in good agreement with the experimentally obtained data for the reflectivity of the FSSF formed by H10F5MOPP molecules.

• OSTI ID: 22771652
• Journal Information: Physics of the Solid State, Vol. 59, Issue 12; Other Information: Copyright (c) 2017 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7834
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
ELECTRIC FIELDS
FILMS
INTERACTIONS
INTERFACES
LAYERS
LIQUID CRYSTALS
MEAN-FIELD THEORY
MOLECULES
NUMERICAL ANALYSIS
OXIDES
PHASE TRANSFORMATIONS
REFLECTIVITY
SIMULATION
TEMPERATURE DEPENDENCE
THERMODYNAMICS
THICKNESS
TRANSITION TEMPERATURE