Abstract
Abstract
In order to study the internal friction of thin films a nodal suspension system called GeNS (Gentle Nodal Suspension) has been developed. The key features of this system are: i) the possibility to use substrates easily available like silicon wafers; ii) extremely low excess losses coming from the suspension system which allows to measure Q factors in excess of 2×108 on 3” diameter wafers; iii) reproducibility of measurements within few percent on mechanical losses and 0.01% on resonant frequencies; iv) absence of clamping; v) the capability to operate at cryogenic temperatures. Measurements at cryogenic temperatures on SiO2 and at room temperature only on Ta2O5 films deposited on silicon are presented.
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References
Details
Published
Apr 01, 2015
Vol/Issue
60(1)
Pages
365-370
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Cite This Article
M. Granata, L. Balzarini, J. Degallaix, et al. (2015). Internal Friction and Young's Modulus Measurements on SiO2 and Ta2O5 Films Done with an Ultra-High Q Silicon-Wafer Suspension. Archives of Metallurgy and Materials, 60(1), 365-370. https://doi.org/10.1515/amm-2015-0060