Monday, May 12

9:15 AM-10:00 AM
Chair: Robert V. Kohn, Courant Institute of Mathematical Sciences, New York University
Peale C Room

IP2
Pattern Formation in Step-Flow Growth: A Route to Nanofabrication

Electronic devices often incorporate layers, which are intended to be smooth and uniform. Additional interesting structures sometimes develop spontaneously in the layers, such as periodic ridges or composition modulations. These "accidental" structures, if they can be controlled, may have numerous applications. However, understanding and control have been hampered by the lack of simple models that describe realistic growth conditions (including strain) in a mathematically tractible way. The speaker will describe such a model, appropriate for growth by atom deposition and step flow. Solving this model for a range of conditions indicates how some key structures arise, and how they can be controlled.

Jerry Tersoff
IBM Thomas J. Watson Research Center

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MMD, 12/17/96