Investigation of PDMS as coating on CMUTs for Imaging

Mette Funding la Cour; Matthias Bo Stuart; Mads Bjerregaard Laursen; Søren Elmin Diederichsen; Erik Vilain Thomsen; Jørgen Arendt Jensen

doi:10.1109/ULTSYM.2014.0645

Investigation of PDMS as coating on CMUTs for Imaging

Mette Funding la Cour, Matthias Bo Stuart, Mads Bjerregaard Laursen, Søren Elmin Diederichsen, Erik Vilain Thomsen, Jørgen Arendt Jensen

Technical University of Denmark

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

A protective layer is necessary for Capacitive Mi- cromachined Ultrasonic Transducers (CMUTs) to be used for imaging purpose. The layer should both protect the device itself and the patient while maintaining the performance of the device. In this work Sylgard 170 PDMS is tested as coating material for CMUTs through comparison of transmit pressure and receive sensitivity in immersion of coated and uncoated elements. It is seen that the transmitted pressure decreases with 27% and the receive sensitivity decreases 35 % when applying the coating using a dam and fill principle. This matches well with the estimated value of 31 %. With the coating, the center frequency was found to be decreased from 4.5 MHz to 4.1 MHz and the fractional bandwidth was increased from 77 % to 84 % in transmit. In receive the center frequency was found to decrease from 4.4 MHz to 3.9 MHz and the fractional bandwidth was decreased from 108 % to 92 %, when applying the PDMS coating

Original language	English
Title of host publication	Proceedings of IEEE International Ultrasonics Symposium 2014
Publisher	IEEE
Publication date	2014
Pages	2584-2587
ISBN (Print)	9781479970490
DOIs	https://doi.org/10.1109/ULTSYM.2014.0645
Publication status	Published - 2014
Event	2014 IEEE International Ultrasonics Symposium - Hilton Hotel, Chicago, United States Duration: 3 Sept 2014 → 6 Sept 2014 https://ieeexplore.ieee.org/xpl/conhome/6917616/proceeding

Conference

Conference	2014 IEEE International Ultrasonics Symposium
Location	Hilton Hotel
Country/Territory	United States
City	Chicago
Period	03/09/2014 → 06/09/2014
Internet address	https://ieeexplore.ieee.org/xpl/conhome/6917616/proceeding

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La cour et al IUS2014 PREPRINTSubmitted manuscript, 3.05 MB

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title = "Investigation of PDMS as coating on CMUTs for Imaging",

abstract = "A protective layer is necessary for Capacitive Mi- cromachined Ultrasonic Transducers (CMUTs) to be used for imaging purpose. The layer should both protect the device itself and the patient while maintaining the performance of the device. In this work Sylgard 170 PDMS is tested as coating material for CMUTs through comparison of transmit pressure and receive sensitivity in immersion of coated and uncoated elements. It is seen that the transmitted pressure decreases with 27% and the receive sensitivity decreases 35 % when applying the coating using a dam and fill principle. This matches well with the estimated value of 31 %. With the coating, the center frequency was found to be decreased from 4.5 MHz to 4.1 MHz and the fractional bandwidth was increased from 77 % to 84 % in transmit. In receive the center frequency was found to decrease from 4.4 MHz to 3.9 MHz and the fractional bandwidth was decreased from 108 % to 92 %, when applying the PDMS coating",

author = "{la Cour}, {Mette Funding} and Stuart, {Matthias Bo} and Laursen, {Mads Bjerregaard} and Diederichsen, {S{\o}ren Elmin} and Thomsen, {Erik Vilain} and Jensen, {J{\o}rgen Arendt}",

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doi = "10.1109/ULTSYM.2014.0645",

language = "English",

isbn = "9781479970490",

pages = "2584--2587",

booktitle = "Proceedings of IEEE International Ultrasonics Symposium 2014",

publisher = "IEEE",

address = "United States",

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T1 - Investigation of PDMS as coating on CMUTs for Imaging

AU - la Cour, Mette Funding

AU - Stuart, Matthias Bo

AU - Laursen, Mads Bjerregaard

AU - Diederichsen, Søren Elmin

AU - Thomsen, Erik Vilain

AU - Jensen, Jørgen Arendt

PY - 2014

Y1 - 2014

N2 - A protective layer is necessary for Capacitive Mi- cromachined Ultrasonic Transducers (CMUTs) to be used for imaging purpose. The layer should both protect the device itself and the patient while maintaining the performance of the device. In this work Sylgard 170 PDMS is tested as coating material for CMUTs through comparison of transmit pressure and receive sensitivity in immersion of coated and uncoated elements. It is seen that the transmitted pressure decreases with 27% and the receive sensitivity decreases 35 % when applying the coating using a dam and fill principle. This matches well with the estimated value of 31 %. With the coating, the center frequency was found to be decreased from 4.5 MHz to 4.1 MHz and the fractional bandwidth was increased from 77 % to 84 % in transmit. In receive the center frequency was found to decrease from 4.4 MHz to 3.9 MHz and the fractional bandwidth was decreased from 108 % to 92 %, when applying the PDMS coating

AB - A protective layer is necessary for Capacitive Mi- cromachined Ultrasonic Transducers (CMUTs) to be used for imaging purpose. The layer should both protect the device itself and the patient while maintaining the performance of the device. In this work Sylgard 170 PDMS is tested as coating material for CMUTs through comparison of transmit pressure and receive sensitivity in immersion of coated and uncoated elements. It is seen that the transmitted pressure decreases with 27% and the receive sensitivity decreases 35 % when applying the coating using a dam and fill principle. This matches well with the estimated value of 31 %. With the coating, the center frequency was found to be decreased from 4.5 MHz to 4.1 MHz and the fractional bandwidth was increased from 77 % to 84 % in transmit. In receive the center frequency was found to decrease from 4.4 MHz to 3.9 MHz and the fractional bandwidth was decreased from 108 % to 92 %, when applying the PDMS coating

U2 - 10.1109/ULTSYM.2014.0645

DO - 10.1109/ULTSYM.2014.0645

M3 - Article in proceedings

SN - 9781479970490

SP - 2584

EP - 2587

BT - Proceedings of IEEE International Ultrasonics Symposium 2014

PB - IEEE

T2 - 2014 IEEE International Ultrasonics Symposium

Y2 - 3 September 2014 through 6 September 2014

ER -

Investigation of PDMS as coating on CMUTs for Imaging

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