Seminars Archive

Mon 18 Dec, at 14:30 - Seminar Room T2

Karsten Pohl

Karsten Pohl


Monday, December 18, 2000, 14:30
Seminar Room, ground floor, Building "T"
Sincrotrone Trieste, Basovizza
Identifying the forces responsible for self-organization at surfaces

Karsten Pohl
(University of New Hampshire, USA) ABSTRACT The spontaneous formation of organized surface structures at nanometer scales has the potential to surpass our most advanced patterning techniques. However, the fundamental mechanisms of self-assembly are usually completely mysterious. Time-resolved scanning tunneling microscopy was used to study the ordering of self-assembled two-dimensional structures by monitoring their thermal vibrations [1], analogous to phonon spectroscopy in the bulk. In strained metal films, elastic distortions of the adlayer and the substrate are the key ingredient for self-organization. [1] K. Pohl et al., Nature 397, 238 (1999).

Last Updated on Tuesday, 24 April 2012 15:21