Curvature walls and focal conic domains in a lyotropic lamellar phase

摘要: In the quasi-ternary CPCl/brine/hexanol lyotropic system, interface of \({L_\alpha }\) lamellar and L3 sponge phases displays a phenomenon epitaxy: layers phase tend to make constant non-trivial angle with interface. Thin samples embedded in are thus submitted oblique anchoring conditions defects created order satisfy bulk ordering boundary conditions. We have studied small droplets phase. They do not exhibit classic (focal conic domains) but wall defects, which appear smectic elasticity Moreover we show through experiments controlled geometry that, even presence focal domains, control size periodicity textures observed at