Tuesday, May 23

Role of Curvature and Hydrodynamics in Soft and Biological Matter - Part I of II

10:00 AM-12:00 PM
Room: Declaration

For Part II, see MS26.

A large number of surfaces/interfaces and biological organelles, such as vesicles and helical (lipid) ribbons, are described by elastic, deformable surfaces with a local and/or global curved geometry. They show an amazing variety of shapes of different symmetry and topology, under different temperature, osmotic pressure, and chemical concentration conditions. In addition, processes, such as lipid phase separation, are known to couple to local curvature. Enclosed membranes contain fluids and thus a coupling of curved manifold elasticity to hydrodynamics becomes very important. Other topics of current interest include DNA tangle equations based on knot theory, pearling instability in fluid microtubules and twisted elastic filaments in viscous fluids. In this mnisymposium, the speakers will discuss the study of electrorheological and magnetorheological fluids contained in deformable curved geometries such as vesicles, microtubles and tori.

Organizers: Avadh Saxena
Los Alamos National Laboratory
Turab Lookman
University of Western Ontario, Canada, and Los Alamos National Laboratory, USA
10:00-10:25 Elasticity of Helical Rods
Raymond E. Goldstein, University of Arizona, USA
10:30-10:55 Twist, Drag, and Kinks: Viscous Dynamics of Rotating Filaments
Thomas R. Powers, Harvard University, USA
11:00-11:25 DNA Supercoiling Dynamics
Tamar Schlick, New York University, USA
11:30-11:55 Using Knots to Analyze DNA Packing in Viral Capsids
DeWitt L. Sumners and Javier Arsuaga, Florida State University, USA; and Joaquim Roca, CID-CSIC, Spain

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