Abstract
Analysis of the Frank free energy for nematics confined to cylindrical regions indicates that the director pattern is dependent on the surface elastic constant if there is weak normal anchoring and escape along the cylinder axis. Using deuterium nuclear-magnetic-resonance techniques on samples of submicrometer-size cavities in Nuclepore membranes, we report the first measurement of .
- Received 5 April 1991
DOI:https://doi.org/10.1103/PhysRevLett.67.1442
©1991 American Physical Society