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University of Chicago MRSEC

Workshop, November 17-19, 2005

Thomas A. Witten, Chair --- Wendy Zhang, Sidney Nagel, Ka Yee Lee, Co-chairs

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Focusing Stress in a Soft Interface

News: 11/23/05photos . more coming

At a fluid interface or in a solid film, gentle structureless forces can produce striking concentrations of stress and singular shapes. Examples are the crumpling of a sheet of paper, the spontaneous folding of layer-forming surfactants in monolayers or in bulk, or the formation of sharp points and filaments in fluids under stress. In all these phenomena, the ability of the interface to bend into the third dimension acts in concert with interfacial stress to enable focusing. Many new phenomena of this sort have been revealed and have been shown to obey asymptotic scaling laws that lends insight into the essential nature of the focusing process. Often understanding is lacking or fragmented.

To highlight these puzzles and reveal further implications of deformable interface structures, we will bring together scientists who study these structures. These include engineers, physicists, mathematicians, geologists and computer scientists from academia, government and industry. The purpose of this workshop is to examine these phenomena from a common point of view, in order to unify our understanding. The meeting will be held at and near the University of Chicago, partly in the new Center for Integrative Science. We will convene the evening of Thursday, November 17 and continue throughout the following Friday and Saturday. There will be about 15 invited talks, poster sessions, and time for discussion.

Scientists interested in participating are invited to inquire here.



Speakers invited:

  • Elastic sheets
      crumpling, edge ruffling, tearing
  • Fluidlike Membranes
      threads in forced lipid vesicles, onions, myelins, monolayers
  • Fluid interfaces
      threads blades and ribbons,
      electrospinning, viscous entrainment,
      Marangoni distortion, distortion via hydrodynamic interaction
      breaking singularities, splashing
  • Focused structure in wetting and dewetting.
  • * Jean-Pierre Delville CPMOH Bordeaux
    * Haim Diamant Tel Aviv U.
    * Alfonso Ganan-Calvo U. Sevilla
    * Sascha Hilgenfeldt Northwestern University
    * Eugenio Hamm U. Santiago, Chile
    * Alex Lips Unilever Corp., Trumbull CT USA
    * Detlef Lohse Twente University
    * Gareth McKinley Massachusetts Inst. of Tech.
    * Narayanan Menon U. Massachusetts
    * Alphonsus V. Pocius 3M Corporation
    * Benoit Roman ESPCI, Paris
    * David Quere College de France
    * Eran Sharon Hebrew U., Jerusalem
    * Kathleen J. Stebe Johns Hopkins U.
    * Sigurdur Thoroddsen National U. Singapore
    * Shankar Venkataramani U. Arizona
    * Stephane Zaleski LMM, U. Paris
    * confirmed

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