P. Mach et al., SURFACE-TENSION OF SEVERAL LIQUID-CRYSTAL COMPOUNDS IN THE SMECTIC-A OR SMECTIC-A(D) PHASE, Journal de physique. II, 5(2), 1995, pp. 217-225
After implementing a computer-enhanced imaging system in our newly est
ablished apparatus, we have achieved much higher resolution in measuri
ng the surface tension of free-standing films in the smectic-A or smec
tic-A(d) phase of seven different liquid-crystal compounds. The experi
mental results reveal two salient features: The relation of surface te
nsion to thickness and the difference in surface tension between the s
mectic-A and smectic-A(d) phases.