The Physics of a(n asymmetric) piece of paper
Date: Thursday, February 28, 2019
Location: 100 Willamette Hall
Speaker: John Toner, University of Oregon
Abstract: I’ll describe the theory of inversion-asymmetric tethered membranes (e.g., Christmas wrapping paper). These exhibit a new “double-spiral“ phase not present in symmetric membranes, in which the membrane assumes a universal algebraic spiral shape. This state exhibits a type of infinite thermal expansion coefficient. Like flat tethered membranes, it can also crumple; indeed, the asymmetry can drive the crumpling. In-vitro experiments on lipid-red blood cell membrane extracts, and on graphene coated on one side, could test these predictions.
All attendees are invited to attend a colloquium reception in the Willamette Hall, Paul Olum atrium at 3:40pm.