Physics Colloquium, University of Massachusetts, Lowell, 9/16/2009

Harnessing Surface Dislocation Networks for Molecular Self-Assembly

Karsten Pohl

Department of Physics and Materials Science Program, University of New Hampshire, Durham, NH, U.S.A.

Bottom-up self-assembly processes on surfaces rely on a delicate balance of interactions and collective effects from a large number of atoms. Unraveling the fundamental forces that drive these processes requires detailed experimental information at the atomic level. I will show how a combination of home-built STM measurements correlated with 2D Frenkel-Kontorova models based on first-principle interaction parameters can lead to the controlled preparation of a large variety of structures.