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Channeled spectra simulation of an anisotropic poly-(phenylmethacrylic) ester of cetyloxybenzoic acid in tetrachloromethane

J. BARAN1, M. POSTOLACHE2,3,*

Affiliation

  1. Institute of Low Temperature and Structure Research of the Polish Academy of Sciences, 2-Okolna Street 50-442, Wroclaw, Poland
  2. “Gh. Asachi” Technical University, Faculty of Automatic Control and Computer Science, 53A Dimitrie Mangeron Blvd., Iaşi, RO–700050, Romania
  3. “Al.I.Cuza” University, Faculty of Physics, 11 Carol I Blvd., 700506, Iaşi, Romania

Abstract

The values of the birefringence n ∆ in the visible range of a 107 molecular weight poly-(phenyl methacrylic) ester of cetyloxybenzoic acid (PPMAECOBA) in tetrachloromethane (TCM) liquid crystal was determined from the channelled spectra of thin layers, as previously described. The spectral composition of the emerging light from a device consisting by a thin liquid crystalline layer placed between the crossed polarizers is investigated using 3-D representations in Matlab. The proposed method permits to establish the spectral composition for a given thickness of the anisotropic layer. The thickness of liquid crystalline layer for which the channels or the maxima of a monochromatic radiation are obtained could also be estimated..

Keywords

Liquid crystals, PPMAECOBA in TCM, Channelled spectra.

Submitted at: May 9, 2006
Accepted at: July 20, 2006

Citation

J. BARAN, M. POSTOLACHE, Channeled spectra simulation of an anisotropic poly-(phenylmethacrylic) ester of cetyloxybenzoic acid in tetrachloromethane, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 4, pp. 1529-1532 (2006)