Alignment of nematic LCs on surface of amorphous hydrogenated carbon

Elena A. Konshina

doi:10.1117/12.230666

19 January 1996 Alignment of nematic LCs on surface of amorphous hydrogenated carbon

Elena A. Konshina

Proceedings Volume 2731, International Liquid Crystal Workshop on Surface Phenomena; (1996) https://doi.org/10.1117/12.230666
Event: International Liquid Crystal Workshop: Surface Phenomena, 1995, St. Petersburg, Russian Federation

Abstract

Observations of the nematic LCs alignment on the surface of amorphous hydrogenated carbon (a-C:H) layers are reported. These layers were prepared from toluene by plasma-activated chemical vapors deposition process. It was found that the surface of as prepared films had produced parallel alignment of alkylcyanobiphenyls LC mixture with positive dielectric anisotropy. Thea-C:H layers surface treated by means of the oxygen plasma could orientate the same LCs homeotropically. It was established the dependencies of the pretilt angle of LCs on the glow discharge power during deposition of a-C:H layers and the oxygen plasma treatment dose of their surface after the preparation. A simple model to explain these observations is presented.

Citation Download Citation

Elena A. Konshina "Alignment of nematic LCs on surface of amorphous hydrogenated carbon", Proc. SPIE 2731, International Liquid Crystal Workshop on Surface Phenomena, (19 January 1996); https://doi.org/10.1117/12.230666

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