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Publication Citation: Relative humidity effects on the determination of elastic properties with atomic force acoustic microscopy

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Author(s): Donna C. Hurley; J Turner;
Title: Relative humidity effects on the determination of elastic properties with atomic force acoustic microscopy
Published: March 01, 2004
Abstract: We have investigated how ambient humidity can affect quantitative measurements of elastic properties on the nanoscale. Using an emerging technique called atomic force acoustic microscopy (AFAM), two samples were examined: a thin film of fluorosilicate glass (FSG) and a section of borosilicate glass. When experimental results were analyzed using a simple model of the AFM is believed to be due to the presence of a humidity-dependent layer of water on the sample. To account for this, the data analysis model was extended to include ciscoelastic damping between the tip and the sample. A damping term proportional to the relative identation modulus M from k* yielded similar values regardless of measurement humidity. These results indicate that environment conditions can influence quantitative nanoscale measurements of elastic properties, at least in some materials.
Citation: Journal of Applied Physics
Volume: 95
Issue: 5
Pages: pp. 2403 - 2407
Keywords: AFAM;elastic properties;relative humidity;ultrasonics
Research Areas: Nanotechnology
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