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High Q factor bonding using natural resin for reduced thermal noise of test masses

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4 Author(s)
Schediwy, S.W. ; The University of Western Australia, Crawley WA 6009, Australia ; Gras, S. ; Ju, L. ; Blair, D.G.

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We show that a low acoustic loss resin enables composite mechanical structures to be bonded with minimal Q degradation. The resin is excreted from the Australian native grass tree Xanthorrhoea. This resin has traditionally been used as an adhesive by the Australian Aborigines. It is shown that the Q factor of the resin is greater than 300 for the 5180 Hz resonance, which allows a high Q factor niobium resonator to be constructed with bonded mirrors while maintaining a Q of ∼106.

Published in:

Review of Scientific Instruments  (Volume:76 ,  Issue: 2 )