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Experimental measurement of the azimuthal anchoring energy function at a SiO-nematic interface

TitoloExperimental measurement of the azimuthal anchoring energy function at a SiO-nematic interface
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione1991
AutoriFaetti, S., Nobili M., and Schirone Antonio
RivistaLiquid Crystals
Volume10
Paginazione95-100
ISSN02678292
Abstract

The functional form of the azimuthal anchoring energy, i.e. the anisotropic part of the interfacial free energy, at the interface between the nematic liquid crystal 4-n-pentyl-4′-cyanobiphenyl and an obliquely evaporated SiO substrate is measured for the first time by using a reflectometric method. The anchoring energy function is obtained by measuring the director rotation on the interface caused by an external magnetic field ranging from 0 to 2·3 T. The dependence of the anchoring energy on the director azimuthal angle is found to be well fitted by the function W a(ϕ) = W asin2 ϕ in agreement with the predictions of the Berreman model for the anchoring at a grooved interface. © 1991 Taylor & Francis Group, LLC.

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cited By 29

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-0002076620&doi=10.1080%2f02678299108028232&partnerID=40&md5=ecf93bdda52cbbb634693e64db5d36f5
DOI10.1080/02678299108028232
Citation KeyFaetti199195