Direct measurement of surface-induced orientational order parameter profile above the nematic-isotropic phase transition temperature.Lee, Ji-Hoon.
Atherton, Timothy J.
De Luca, Antonio.
Petschek, Rolfe G.
The spatial and temperature dependence of the surface-induced orientational order parameter S(z,T) was determined in the isotropic phase. An optical fiber was immersed in a thin liquid crystal layer and the retardation was measured as a function of the fiber's height above the surface, from which the model-independent S(z,T) was deduced with resolution ≲2 nm. It was found that (i) S(z=0)≲0.12 clo... read more
- Liquid crystals.
- Tufts University. Department of Physics and Astronomy.
- Permanent URL
- Original publication
- J. H. Lee, T. J. Atherton, V. Barna, A. De Luca, E. Bruno, R. G. Petschek and C. Rosenblatt, Physical Review Letters 102 (16) (2009). https://doi.org/10.1103/PhysRevLett.102.167801.