High-pressure nano-seismology: Use of micro-ring resonators for characterizing acoustic emissions

T. Smart, H. Li, B. Dong, X. Shu, R. Hai, C. Sun, H. F. Zhang, R. Jeanloz

Research output: Contribution to journalArticlepeer-review

Abstract

Microring resonator (MRR) ultrasound detectors provide orders of magnitude greater sensitivity and frequency range (to < 10 Pa, from DC to 100 s of MHz) than previously achieved in recording acoustic emissions from materials at high pressures. We characterize acoustic emissions from crystal-structural phase transitions in Si to pressures of 50 GPa, well beyond the brittle-ductile transition at room temperature, and find that the number of events increases nearly tenfold for each decade reduction in the duration of recorded events. The shortest-duration events arrive in clusters, suggestive of a self-propagating, transformation-catalyzed process.

Original languageEnglish (US)
Article number081904
JournalApplied Physics Letters
Volume115
Issue number8
DOIs
StatePublished - Aug 19 2019

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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