High Voltage Birefringence Measurements of Elastic Constants

It is shown that the birefringence change associated with an electric field-induced planar to homeotropic Freedericksz transition can be linearly related to the applied voltage for large director deformations. Values for the bend:splay elastic constant ratio can be obtained from a linear fit of volt...

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Veröffentlicht in:	Molecular crystals and liquid crystals (1969) 1984-03, Vol.102 (2), p.35-41
Hauptverfasser:	Balzarini, D. A., Dunmur, D. A., Prlffy-muhoray, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Birefringence (including stress birefringence, flow birefringence, etc.) Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of bulk materials and thin films Physics
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Beschreibung
Zusammenfassung:	It is shown that the birefringence change associated with an electric field-induced planar to homeotropic Freedericksz transition can be linearly related to the applied voltage for large director deformations. Values for the bend:splay elastic constant ratio can be obtained from a linear fit of voltage to inverse birefringence, Experimental results are presented for 5CB which are in reasonable agreement with values obtained by other techniques.
ISSN:	0026-8941
DOI:	10.1080/01406568408247037