Nawrodt, R. et al. (2013) Investigation of mechanical losses of thin silicon flexures at low temperatures. Classical and Quantum Gravity, 30(11), p. 115008. (doi: 10.1088/0264-9381/30/11/115008)
Full text not currently available from Enlighten.
Abstract
Studies of the mechanical loss of silicon flexures in a temperature region from 5 to 300 K are presented, where the flexures have been prepared by different fabrication techniques of interest for the construction of suspension elements of future interferometric gravitational wave detectors. A lowest mechanical loss of 3 × 10−8 was observed for a 130 μm thick flexure at around 10 K. While the mechanical loss follows the thermo-elastic predictions down to 50 K, at lower temperatures the observed loss is found to be a function of surface roughness. This surface loss is of interest for all applications using silicon-based oscillators at low temperatures. The extraction of a surface loss parameter using results from our measurements and those of other authors is presented and the relevance for future gravitational wave detector suspensions is discussed. A surface loss parameter αs = 0.5 pm was obtained. This reveals that the surface loss of silicon is significantly lower than the surface loss of fused silica.
Item Type: | Articles |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Hammond, Professor Giles and Nawrodt, Dr Ronny and Reid, Professor Stuart and Rowan, Professor Sheila and Martin, Dr Iain and Cunningham, Dr Liam and Hough, Professor James and Bassiri, Mr Riccardo |
Authors: | Nawrodt, R., Schwarz, C., Kroker, S., Martin, I.W., Bassiri, R., Brückner, F., Cunningham, L., Hammond, G.D., Heinert, D., Hough, J., Käsebier, T., Kley, E.-B., Neubert, R., Reid, S., Rowan, S., Seidel, P., and Tünnermann, A. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Research Centre: | College of Science and Engineering > School of Physics and Astronomy > Institute for Gravitational Research |
Journal Name: | Classical and Quantum Gravity |
Publisher: | Institute of Physics |
ISSN: | 0264-9381 |
ISSN (Online): | 1361-6382 |
University Staff: Request a correction | Enlighten Editors: Update this record