H-2 NMR of a liquid crystal confined to submicron cylindrical cavities, in a 17-K interval above the nematic-isotropic transition, reveals a weakly orientationally ordered molecular layer at the cavity wall governed by local interactions. The order (S0 = 0.02) is temperature independent so that a partial wetting is realized with no prewetting transition expected. A molecular exchange rate between the surface layer and the bulk is measured to be approximately 10(3) s-1. The coherence length measuring the order penetrating further into the cavity is described by alpha = 0.4 and xi-0 = 0.6 nm.
Physical Review Letters
Copyright 1991 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevLett.66.723
Crawford, G. P.; Yang, Deng-Ke; Zumer, S.; Finotello, Daniele; Doane, J. William (1990). Ordering and Self-Diffusion in the 1st Molecular Layer at a Liquid-Crystal Polymer Interface. Physical Review Letters 66(6) 723-726. doi: 10.1103/PhysRevLett.66.723. Retrieved from https://oaks.kent.edu/cpippubs/256