Measurement of gold surface self-diffusion by scanning tunneling microscopy |
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| Affiliation: | 1. Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, INQUIMAE-CONICET, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, Buenos Aires C1428EHA, Argentina;2. Lehrstuhl für Physikalische Chemie II, Universität Erlangen-Nürnberg, Egerlandstraße 3, Erlangen 91058, Germany;3. Brazilian Synchrotron Light Laboratory (LNLS), Brazilian Center for Research on Energy and Materials (CNPEM), Campinas 13083-970, Brazil;1. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China;2. Shandong Institute of Geological Survey, Jinan 250013, China;3. Lingnan Gold Mine, Shandong Zhongkuang Group Co., Ltd., Zhaoyuan 265401, China;1. School of Fundamental Sciences, Jining Medical University, Jining 272000, China;2. School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | Measurement of gold surface self-diffusion by the method of surface profile decay, using a scanning tunneling microscope (STM) have been done on a polycrystalline gold film deposited on a glass substrate. The peak-to-peak surface roughness was measured as a function of annealing time after annealing at 170 °C with a special pan-cake furnace in the STM. The gold surface diffusion coefficient at 170 °C can then be extracted from these measurements. |
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