Smectic Topology, Tomography, and Topography

MEMBERS SEMINAR
Topic:Smectic Topology, Tomography, and Topography
Speaker:Randy Kamien
Affiliation:University of Pennsylvania and Member, School of Mathematics
Date:Monday, November 2
Time/Room:2:00pm - 3:00pm/S-101

Smectic liquid crystals correspond to certain foliations of Euclidean space. I will discuss the topology of defects in the smectics. Typically the index of these topological defects is characterized via the fundamental group of the manifold of ground states. I will review this approach and present a new formulation of the classification of defects which avoids inconsistencies in the traditional homotopy approach. No background necessary!