Interaction of UV-Laser Radiation with Molecular Surface Films.
Final rept. Mar 81-Mar 85,
COLUMBIA UNIV NEW YORK DEPT OF ELECTRICAL ENGINEERING
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The surface chemistry of Laser Photodeposition has been explored. The findings include the photodissociation physics of organometallics on surfaces and in the gas phase, and the first observation of surface enhanced chemistry. The general objective of this research project is to obtain a clear picture of the basic physics of laser-surface chemical interactions. In pursuit of this general objective, we examined the following specific tasks a Demonstrate and understand laser-enhanced surface using both random and collective arrays of metal particles. The reaction will be by ultraviolet photodecomposition. b Measure and analyze the spectra of methylalkyls and ethylalkyls. Develop and understanding of the shift of the spectra when these molecules are absorbed on passive substrates. c Experimentally determine the mechanism for the ultraviolet-enhanced etching of semiconductors submerged in aqueous solution.
- Physical Chemistry
- Radiation and Nuclear Chemistry
- Electrical and Electronic Equipment
- Lasers and Masers