AVS 53rd International Symposium
    Surface Science Thursday Sessions
       Session SS-ThP

Paper SS-ThP21
Energetic Gas-Phase Collisions with Alkanethiol Self-Assembled Monolayers

Thursday, November 16, 2006, 5:30 pm, Room 3rd Floor Lobby

Session: Surface Science Poster Session
Presenter: N.A. Kautz, University of Notre Dame
Authors: N.A. Kautz, University of Notre Dame
D.P. Fogarty, University of Notre Dame
S.A. Kandel, University of Notre Dame
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The combination of a molecular-beam source with an ultra-high-vacuum scanning tunneling microscope allows the investigation of structural and chemical changes of octanethiol self-assembled monolayers resulting from energetic gas-surface collisions. In situ monitoring of the sample before, during, and after collision shows that at the molecular scale, close-packed regions of the monolayer show very few changes even when bombarded by hyperthermal or reactive species. However, defects in the organic monolayer, which result automatically from the film deposition process, result in more reactive environments in which significant changes are seen.