By: Pedro Patrício
At: Complexo Interdisciplinar, Anfiteatro
We describe the symmetry structures of Smectic-A and Smectic-C liquid crystals and the beautiful de Gennes-theory that accounts for them. We review the known physical mechanisms that shape the meniscus of isotropic fluids and Smectic-A films. We report experimental observations showing the undulations of the meniscus in Smectic-C films. We propose possible explanations for this exotic and apparently useless phenomenon.