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Controllable Nucleation of Cavitation from Plasmonic Gold Nanoparticles for Enhancing High Intensity Focused Ultrasound Applications

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A portable infrasound generator.

Joseph Park¹, James Robertson

¹Infrasound Laboratory, University of Hawaii, Kailua-Kona, Hawaii 96740, USA. jpark@isla.hawaii.edu

The Journal of the Acoustical Society of America

|April 10, 2009

Summary

This summary is machine-generated.

A novel rotary subwoofer efficiently generates infrasound from a compact source. This technology shows promise as a calibration tool for the International Monitoring System

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Area of Science:

Acoustics and Signal Processing
Geophysics and Seismology

Background:

The International Monitoring System (IMS) requires reliable infrasound calibration sources.
Existing infrasound calibration methods may lack portability or efficiency.

Purpose of the Study:

To evaluate the effectiveness of a novel rotary subwoofer as a field-deployable infrasound calibration source.
To assess the performance of the rotary subwoofer for the IMS.

Main Methods:

A prototype rotary subwoofer was deployed and tested.
The device was used to insonify elements of the IMS infrasound array I59US from a distance of 3.8 km.
Signal-to-noise ratios (SNRs) for continuous wave signals were measured.

Main Results:

The rotary subwoofer successfully insonified all elements of the I59US array.
Measured SNRs for continuous wave signals ranged from 5 to 15 dB.
The device demonstrated controllable infrasound signal transmission over 5 km.

Conclusions:

The rotary subwoofer is a capable low-frequency transducer for generating infrasound.
The device's performance indicates its utility as a calibration source for IMS infrasound arrays.
Field-deployable rotary subwoofers offer a viable solution for infrasound calibration needs.