Polymeric capacitive transducers and arrays for gas coupled operation

Richard O'Leary; Gerald Harvey

Polymeric capacitive transducers and arrays for gas coupled operation

Richard O'Leary, Gerald Harvey

Electronic And Electrical Engineering

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Abstract

This paper describes a facile approach for the manufacture of capacitive transducers based on micropatterning of polymer substrates. The process affords independent control of cavity depth, lateral dimensions and spatial distribution. The manufacture of air-coupled devices is guided by PZFlex modeling based on the range cavity dimension available from the method. Single element devices, operating at 500kHz, exhibit transducer bandwidths in excess of 100% and two-way insertion loss of 62dB being typical. Laser vibrometery confirms uniform surface dilation of the excited. PZFlex, configured with MPI parallelization scheme, has been used to assess linear array performance inter-element cross talk is minimal and observed to be 21dB.

Original language	English
Publication status	Accepted/In press - 2014
Event	IEEE 2014 International Ultrasonics Symposium - Hilton, Chicago, United Kingdom Duration: 3 Sept 2014 → 6 Sept 2014

Conference

Conference	IEEE 2014 International Ultrasonics Symposium
Country/Territory	United Kingdom
City	Chicago
Period	3/09/14 → 6/09/14

Keywords

capacitive transducers
modelling
finite element
air-coupled ultrasound

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OLearyHarvey-IUS2014-polymeric-capacitive-transducers-and-arrays-for-gas-coupled-operationAccepted author manuscript, 353 KB

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title = "Polymeric capacitive transducers and arrays for gas coupled operation",

abstract = "This paper describes a facile approach for the manufacture of capacitive transducers based on micropatterning of polymer substrates. The process affords independent control of cavity depth, lateral dimensions and spatial distribution. The manufacture of air-coupled devices is guided by PZFlex modeling based on the range cavity dimension available from the method. Single element devices, operating at 500kHz, exhibit transducer bandwidths in excess of 100% and two-way insertion loss of 62dB being typical. Laser vibrometery confirms uniform surface dilation of the excited. PZFlex, configured with MPI parallelization scheme, has been used to assess linear array performance inter-element cross talk is minimal and observed to be 21dB.",

keywords = "capacitive transducers, modelling, finite element, air-coupled ultrasound",

author = "Richard O'Leary and Gerald Harvey",

note = "(c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.; IEEE 2014 International Ultrasonics Symposium ; Conference date: 03-09-2014 Through 06-09-2014",

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AU - Harvey, Gerald

N1 - (c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

PY - 2014

Y1 - 2014

N2 - This paper describes a facile approach for the manufacture of capacitive transducers based on micropatterning of polymer substrates. The process affords independent control of cavity depth, lateral dimensions and spatial distribution. The manufacture of air-coupled devices is guided by PZFlex modeling based on the range cavity dimension available from the method. Single element devices, operating at 500kHz, exhibit transducer bandwidths in excess of 100% and two-way insertion loss of 62dB being typical. Laser vibrometery confirms uniform surface dilation of the excited. PZFlex, configured with MPI parallelization scheme, has been used to assess linear array performance inter-element cross talk is minimal and observed to be 21dB.

AB - This paper describes a facile approach for the manufacture of capacitive transducers based on micropatterning of polymer substrates. The process affords independent control of cavity depth, lateral dimensions and spatial distribution. The manufacture of air-coupled devices is guided by PZFlex modeling based on the range cavity dimension available from the method. Single element devices, operating at 500kHz, exhibit transducer bandwidths in excess of 100% and two-way insertion loss of 62dB being typical. Laser vibrometery confirms uniform surface dilation of the excited. PZFlex, configured with MPI parallelization scheme, has been used to assess linear array performance inter-element cross talk is minimal and observed to be 21dB.

KW - capacitive transducers

KW - modelling

KW - finite element

KW - air-coupled ultrasound

UR - http://ewh.ieee.org/conf/ius_2014/

M3 - Paper

T2 - IEEE 2014 International Ultrasonics Symposium

Y2 - 3 September 2014 through 6 September 2014

ER -

Polymeric capacitive transducers and arrays for gas coupled operation

Abstract

Conference

Keywords

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