Phys. Rev. E 60, 5580–5583 (1999)Non-Debye screening of a surface charge and a bulk-ion-controlled anchoring transition in a nematic liquid crystalReceived 14 June 1999; published in the issue dated November 1999 We study the anchoring mechanism due to substrate-adsorbed ions by examining a related anchoring transition. An analytical solution to the Poisson equation shows that, as their number suffices for a non-negligible anchoring contribution, the surface field is screened over some characteristic microscopic distance. It is shown both theoretically and experimentally that the critical temperature of the transition can be controlled by bulk ion density through its relation to the density of adsorbed ions. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.60.5580
DOI:
10.1103/PhysRevE.60.5580
PACS:
61.30.Cz, 61.30.Gd
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