Azimuthal anchoring energy at a sio

Maurizio Nobili, Cesare Lazzari, Sandro Faetti, Maurizio Nobili, Sandro Faetti, Antonio Schirone

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Abstract

The azimuthal anchoring energy at the interface between the nematic liquid crystal pentylcyanobiphenyl (5CB) and an obliquely evaporated SiOxsubstrate is measured by using a reflectometric method. The time response of the director at the surface is investigated and two very different regimes are evidenced. The azimuthal anchoring energy coefficient exhibits an almost-critical behaviour near the clearing temperature and is almost independent on the thickness d of the SiOxlayer but it exhibits a sharp decrease for d ≤ dc ≈ 25 Å. The anchoring function is found to depend on the azimuthal director angle φ as W(φ) = Wa/2 sin2(φ). © 1992, Taylor & Francis Group, LLC. All rights reserved.
Original languageEnglish
Pages (from-to)97 - 106
Number of pages10
JournalMolecular Crystals and Liquid Crystals
Volume212
Issue number1
DOIs
Publication statusPublished - 1 Feb 1992
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Nobili, M., Lazzari, C., Faetti, S., Nobili, M., Faetti, S., & Schirone, A. (1992). Azimuthal anchoring energy at a sio. Molecular Crystals and Liquid Crystals, 212(1), 97 - 106. https://doi.org/10.1080/10587259208037250