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9 February 2005 In situ study of corrosion with an atomic force microscope scanning in liquids
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In this paper, a new type of AFM scanning in liquid is developed. It circumvents the limitations of scanning electron microscopy by working in-situ, facilitating real-time studies of iron corrosion. We briefly introduce the structure of the AFM probe, liquid cell, scanning and photoelectronic feedback control system for image scanning and processing in liquid. By using the AFM scanning in liquid, a process of metal corrosion in liquid circumstance can be observed and the real-time images of the sample surface were successfully gained. The results indicated that although corrosion generally appears to be a macroscopic phenomenon, it typically begins at the atomic or near atomic level. And the experiments also show that this system could avoid the effect of surface tension and vibration on AFM images and was not restricted by sample's size and weight. It is of high repeatability, reliable stability and ideal contrast for image acquisition, and has a resolution of better than 1nm, covering a scan range from 100 nm x 100 nm to 10 mm x 10 mm.
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Dongxian Zhang, Haijun Zhang, and Xiaofeng Lin "In situ study of corrosion with an atomic force microscope scanning in liquids", Proc. SPIE 5635, Nanophotonics, Nanostructure, and Nanometrology, (9 February 2005);

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