Topical Presentation:    

Controlling the Nanoscale Morphology and Chemistry of Organic Films Deposited by Polyatomic Ions

 
Speaker:     Prof. Luke Hanley
Department of Chemistry
University of Illinois at Chicago

Date: Friday, November 22, 2002
Location:   Manzo's Restaurant
(Same as main meeting)
Times:
Topical Group:
Social Hour: 6:00- 7:00 P.M.
Dinner: 7:00 P.M.
Meeting: 8:00 P.M.
 

Abstract:

The control of chemistry and morphology on the nanometer scale is critical to a range of new technological applications. Polyatomic ion beams with hyperthermal kinetic energies ranging from 1 to 500 eV are advantageous for practical surface modification and nanofabrication due to their ability to fabricate thin film nanostructures with controlled morphology, unique collision dynamics, and ability to transfer intact chemical functionality to the surface. Hyperthermal polyatomic ions also play a critical role in plasma processing, laser ablation, and several other energetic deposition processes. Several experiments are described in which mass-selected and non-mass-selected polyatomic ion beams are used to create nanometer organic thick films with controlled surface and buried interface morphologies. X-ray photoelectron spectroscopy, atomic force microscopy, x-ray reflectivity, and scanning electron microscopy are utilized to analyze the morphology and chemistry of these films. Polyatomic ions are found to control film morphology on the nanoscale through variation of the incident ion energy, ion structure, and/or substrate.

Biography:

Luke Hanley received his Ph.D. in Physical Chemistry from the State University of New York at Stony Brook in 1988, where he studied gas phase reactions of metal clusters with Prof. Scott L. Anderson using a home built tandem mass spectrometer. He was National Science Foundation Postdoctoral Research Fellowship in Chemistry with Prof. John T. Yates, Jr. at the University of Pittsburgh from 1988 to 1990, studying photochemistry on metal surfaces. He has been a faculty member at UIC since 1990, where he received a NSF Young Investigator Award in 1993 and a University Scholar Award in 1995. He is currently Professor of Chemistry and Bioengineering, with funding from the National Science Foundation and the National Institutes of Health. His research interests include polyatomic ion-surface interactions and the modification and analysis of biomaterials surfaces.





Updated 9/25 /02