Technical aspects of measurement of elastic constants and diamagnetic anisotropy of nematic liquid crystals

Jerzy Kedzierski; Zbigniew Raszewski; Jolanta Rutkowska; Tadeusz Opara; Jerzy Zielinski; Jozef Zmija; Roman S. Dabrowski

doi:10.1117/12.156984

15 October 1993 Technical aspects of measurement of elastic constants and diamagnetic anisotropy of nematic liquid crystals

Jerzy Kedzierski, Zbigniew Raszewski, Jolanta Rutkowska, Tadeusz Opara, Jerzy Zielinski, Jozef Zmija, Roman S. Dabrowski

Author Affiliations +

Proceedings Volume 1845, Liquid and Solid State Crystals: Physics, Technology and Applications; (1993) https://doi.org/10.1117/12.156984
Event: Liquid and Solid State Crystals: Physics, Technology, and Applications, 1992, Zakopane, Poland

Abstract

We have measured the critical values of electric E_c and magnetic H_c fields in different types of Freedericksz transitions for 4-trans-n-hexyl-cyclohexyl-isothiocyanatobenzene (6CHBT). Capacitive and optical methods have been employed to detect these transitions. In the case of twist-type deformation we have proposed a new interference method for threshold fields determination. On the basis of these measurements diamagnetic anisotropy (Delta) _(Chi) splay K₁₁, twist K₂₂ and bend K₃₃ elastic constants have been calculated for cells of various thickness, coated with different polyimides.

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Jerzy Kedzierski, Zbigniew Raszewski, Jolanta Rutkowska, Tadeusz Opara, Jerzy Zielinski, Jozef Zmija, and Roman S. Dabrowski "Technical aspects of measurement of elastic constants and diamagnetic anisotropy of nematic liquid crystals", Proc. SPIE 1845, Liquid and Solid State Crystals: Physics, Technology and Applications, (15 October 1993); https://doi.org/10.1117/12.156984

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