Skip to Main content Skip to Navigation
Journal articles

Faceting and stability of smectic A droplets on a solid substrate

Abstract : It is shown that a smectic A droplet deposited on a solid substrate treated for strong homeotropic anchoring is faceted at the top in spite of the fact that there are no steps at the free surface, but instead edge dislocations in the bulk. The radius of the facet and the full profile of the curved part of the droplet are determined as a function of the temperature in the vicinity of a nematic-smectic A phase transition. It is shown that the observed profiles do not correspond to the actual equilibrium shape, but to metastable configurations close to their point of marginal stability. In addition, we predict that the profiles must be different for a given temperature depending on whether the droplet has been heated or cooled down to reach this temperature. Finally, we discuss the problem of the formation of giant dislocations in big droplets (Grandjean terraces).
Complete list of metadata

Cited literature [26 references]  Display  Hide  Download
Contributor : Patrick Oswald Connect in order to contact the contributor
Submitted on : Thursday, October 25, 2007 - 8:17:36 PM
Last modification on : Tuesday, January 19, 2021 - 10:48:05 AM
Long-term archiving on: : Monday, April 12, 2010 - 12:42:50 AM


Publisher files allowed on an open archive


  • HAL Id : ensl-00182429, version 1



Patrick Oswald, Lubor Lejcek. Faceting and stability of smectic A droplets on a solid substrate. European Physical Journal E: Soft matter and biological physics, EDP Sciences: EPJ, 2006, 19 (4), pp.441-452. ⟨ensl-00182429⟩



Record views


Files downloads