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Published on: June 16, 2014
The origin of surface stress induced by adsorption of iodine on gold
Drew R Evans1, Vincent S J Craig
1Department of Applied Mathematics, RSPhysSE, Australian National University, Canberra 0200 A.C.T., Australia.
Abstract:
The cantilever technique for the measurement of film stress on both macroscopic and microscopic cantilevers is validated, then applied to the experimental determination of film stress induced by the adsorption of a monolayer of iodine onto a gold substrate. A model is proposed that relates the change in the interatom potential upon chemisorption of iodine onto gold to the measured film stress. Excellent agreement is found with the experimentally determined value. This result gives insight into the origins of film stress that is observed in all thin film and coating applications.
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