Determination of polar-anchoring energy coefficient by wedge cell method

Jerzy Kedzierski; Emilia Miszczyk; Marek Andrzej Kojdecki; Zbigniew Raszewski; Pawel Perkowski; Marek Olifierczuk

doi:10.1117/12.385680

12 May 2000 Determination of polar-anchoring energy coefficient by wedge cell method

Jerzy Kedzierski, Emilia Miszczyk, Marek Andrzej Kojdecki, Zbigniew Raszewski, Pawel Perkowski, Marek Olifierczuk

Proceedings Volume 4147, Liquid Crystals: Chemistry, Physics, and Applications; (2000) https://doi.org/10.1117/12.385680
Event: XIII International Conference on Liquid Crystals: Chemistry, Physics, and Applications, 1999, Krynica Zdroj, Poland

Abstract

The method for the determination of polar anchoring energy coefficient is presented. This method is based on the measurement of the threshold and saturation voltages for electrical Freedericksz transition in the wedge cell. This is a modification of the method described. The method makes use of the fact that thresholds of the Freedericksz transition may be considered as eigenvalues of the operator of the second derivative, corresponding to the boundary eigenvalue problem with different boundary conditions. The method under consideration has been applied to determine anchoring energy of the 6CHTB liquid crystal on various polyimide surfaces. Results have been compared with those obtained by other methods.

Citation Download Citation

Jerzy Kedzierski, Emilia Miszczyk, Marek Andrzej Kojdecki, Zbigniew Raszewski, Pawel Perkowski, and Marek Olifierczuk "Determination of polar-anchoring energy coefficient by wedge cell method", Proc. SPIE 4147, Liquid Crystals: Chemistry, Physics, and Applications, (12 May 2000); https://doi.org/10.1117/12.385680

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