COLL 322 |
| Ralph Kolm1, Ille Gebeshuber1, Wolfgang S. M. Werner2, and Herbert Störi2. (1) AC²T Research GmbH, Viktor Kaplan-Straße 2, A-2700 Wr. Neustadt, Austria, (2) Institut für allgemeine Physik, Vienna University of Technology, Wiedner Hauptstraße 8-10, A-1040 Vienna, Austria |
| We studied the adsorption of two additives namely 8-hydroxyquinoline and ricinoleic acid from their solutions in toluene onto pure copper under noble gas atmosphere. After adsorption the samples were transferred into the X-ray photoelectron spectrometer, which was directly flanged to the adsorption vessel, without exposition to the environment. There angle resolved spectra of the C 1s, N 1s, O 1s and Cu 2p photoelectrons were recorded at analyser angles of 15°, 28°, 48°, 61°, 70° and 75°. The spectra showed that the adsorption of both additives took place under noble gas conditions. The binding of 8-hydroxyquinoline to copper resulted in a chemical shift of the 2p photoelectrons of the atoms at the surface, which equals the shift between pure copper and copper oxide. The thickness of the adsorbed ricinoleic acid layer was determined, using the straight line approximation, the density of the fluid and Seah and Dench's formula to calculate the inelastic mean free path. It showed that both additives adsorbed on the substrate formed a layer, which was less than a monolayer. |
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Friction, Lubrication, and Adhesion in Micro- and Nano-Scale Devices
8:30 AM-12:00 PM, Tuesday, March 30, 2004 Marriott -- Orange County 5, Oral
Division of Colloid and Surface Chemistry |