A 5 mm × 5 mm Square, Aluminum Lens Based Histotripsy Transducer: Reaching the Endoscopic Form Factor

J. K. Woodacre; E. Simpson; J. A. Brown

doi:10.1109/ULTSYM.2018.8579752

A 5 mm × 5 mm Square, Aluminum Lens Based Histotripsy Transducer: Reaching the Endoscopic Form Factor

J. K. Woodacre, E. Simpson, J. A. Brown

Medicine

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

A 5 mm × 5 mm square histotripsy transducer was built using a 1/4wavelength matching-layer coated aluminum lens bonded to an air-backed 1-3 piezoelectric composite with a 45% volume fraction of PZT5A and a 5 MHz resonance. With a focal length of 5 mm the transducer was found to have a steady-state negative pressure trend of 8.3 MPa/100 V at 6.5 MHz with a -3 dB beam width ranging from 0.107 mm to 0.118 mm. Beam length was measured to be 0.871 mm. The addition of a series tuning element allowed increased power delivery to the transducer, and a sustained cavitation bubble cloud was observed when driven at 6.5 MHz with a 350 V peak-to-peak drive voltage, 15 cycle pulse at 1 kHz PRF.

Original language	English
Title of host publication	2018 IEEE International Ultrasonics Symposium, IUS 2018
Publisher	IEEE Computer Society
ISBN (Electronic)	9781538634257
DOIs	https://doi.org/10.1109/ULTSYM.2018.8579752
Publication status	Published - Dec 17 2018
Event	2018 IEEE International Ultrasonics Symposium, IUS 2018 - Kobe, Japan Duration: Oct 22 2018 → Oct 25 2018

Publication series

Name	IEEE International Ultrasonics Symposium, IUS
Volume	2018-October
ISSN (Print)	1948-5719
ISSN (Electronic)	1948-5727

Conference

Conference	2018 IEEE International Ultrasonics Symposium, IUS 2018
Country/Territory	Japan
City	Kobe
Period	10/22/18 → 10/25/18

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

ASJC Scopus Subject Areas

Acoustics and Ultrasonics

Access to Document

10.1109/ULTSYM.2018.8579752

Cite this

A 5 mm × 5 mm Square, Aluminum Lens Based Histotripsy Transducer: Reaching the Endoscopic Form Factor. / Woodacre, J. K.; Simpson, E.; Brown, J. A.
2018 IEEE International Ultrasonics Symposium, IUS 2018. IEEE Computer Society, 2018. 8579752 (IEEE International Ultrasonics Symposium, IUS; Vol. 2018-October).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Woodacre, JK, Simpson, E & Brown, JA 2018, A 5 mm × 5 mm Square, Aluminum Lens Based Histotripsy Transducer: Reaching the Endoscopic Form Factor. in 2018 IEEE International Ultrasonics Symposium, IUS 2018., 8579752, IEEE International Ultrasonics Symposium, IUS, vol. 2018-October, IEEE Computer Society, 2018 IEEE International Ultrasonics Symposium, IUS 2018, Kobe, Japan, 10/22/18. https://doi.org/10.1109/ULTSYM.2018.8579752

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abstract = "A 5 mm × 5 mm square histotripsy transducer was built using a 1/4wavelength matching-layer coated aluminum lens bonded to an air-backed 1-3 piezoelectric composite with a 45% volume fraction of PZT5A and a 5 MHz resonance. With a focal length of 5 mm the transducer was found to have a steady-state negative pressure trend of 8.3 MPa/100 V at 6.5 MHz with a -3 dB beam width ranging from 0.107 mm to 0.118 mm. Beam length was measured to be 0.871 mm. The addition of a series tuning element allowed increased power delivery to the transducer, and a sustained cavitation bubble cloud was observed when driven at 6.5 MHz with a 350 V peak-to-peak drive voltage, 15 cycle pulse at 1 kHz PRF.",

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A 5 mm × 5 mm Square, Aluminum Lens Based Histotripsy Transducer: Reaching the Endoscopic Form Factor

Abstract

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Bibliographical note

ASJC Scopus Subject Areas

Access to Document

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