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Absorbance and Pitch Relationships in Dichroic Guest-Host Liquid Crystal Systems

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Abstract

The absorbance of a dichroic dye dissolved in chiral nematic hosts in the Grandjean texture increased with decreasing pitch of the host. Absorbance was higher for hosts of low birefringence and high order parameter. Boundary condition, homeotropic or parallel (homogeneous), had no appreciable effect on absorbance, but threshold voltage was higher for the parallel than homeotropic boundary. The results agreed with theoretical plots relating absorbance to pitch.

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© 1978 Springer Science+Business Media New York

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Cole, H.S., Aftergut, S. (1978). Absorbance and Pitch Relationships in Dichroic Guest-Host Liquid Crystal Systems. In: Johnson, J.F., Porter, R.S. (eds) Liquid Crystals and Ordered Fluids. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-8888-7_9

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  • DOI: https://doi.org/10.1007/978-1-4615-8888-7_9

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4615-8890-0

  • Online ISBN: 978-1-4615-8888-7

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