Tuesday, May 13

4:30 PM-6:10 PM
Gilbert Stuart Room

The Influence of Molten Contact Lines on Growth and Morphology

Freezing and melting contact lines are present during several important methods of materials processing and their dynamics often have a significant effect on the overall growth and form of the product. The examples discussed in this minisymposium include containerless solidification, reactive wetting, the spreading of thin solid films, and the deposition of molten microdroplets. In each case, conditions applied at a contact line influence large scale features of the process. The purpose of this minisymposium is to describe recent advances in the modeling and understanding of molten contact lines. This session will highlight an assortment of situations where contact lines play a fundamental role in materials processing. The contributions, which are a mix of theory and experiment, adopt models of the contact region that respect the potential for gradient singularities at tri-junctions.

Organizers: Kirk Brattkus, Southern Methodist University and Daniel M. Anderson, National Institute of Standards and Technology

4:30-4:50 Dynamic Contact Angles in Containerless Solidification
Daniel M. Anderson, Organizer; M. Grae Worster, University of Cambridge, United Kingdom; and Stephen H. Davis, Northwestern University
4:55-5:15 The Spreading of Thin Solid Films on Undercooled Substrates
Kirk Brattkus, Organizer
5:20-5:40 A Model of Reactive Wetting for Thin Drops
James A. Warren, W. J. Boettinger, and A. R. Roosen, National Institute of Standards and Technology
5:45-6:05 Arrest of a Molten Contact Line Advancing over a Cold Solid of its Own Kind
Ain A. Sonin and Stefano Schiaffino, Massachusetts Institute of Technology

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MMD, 12/17/96