Gas coupled polymeric capacitive transducers via pad printing

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

Micropatterning of polymer substrates has been shown to be effective methodology for the manufacture of capacitive transducers. The method involves creating a positive mask of sessile liquid droplets on a polymer substrate. The droplets define the cavity dimensions and spatial distribution, a subsequent processing stage independently defines the cavity depth. Droplets can be defined in a variety of ways – this paper explores the patterning the droplets, and hence cavities, on the polymer substrate via a pad-printing technique. The printing pad is manufactured using 3D printing technique, an
example pad is illustrated in Figure 1 – essentially the pad comprises an array of styli. The lateral dimensions and spatial distribution of the styli are replicated via the pattern of deposited droplets on the polymer substrate. The morphology of the styli tips has been explored - planar tips were found to droplet patterns with the highest fidelity. Single element air coupled devices operating with a nominal centre frequency of 500kHz have been constructed and evaluated
experimentally. Transducer bandwidths in excess of 100% were observed with two-way insertion loss of 60dB being typical.
LanguageEnglish
Title of host publicationProceedings of IEEE International Ultrasonics Symsposium 2015
Place of PublicationPiscataway, NJ.
PublisherIEEE
Pages1-4
Number of pages4
ISBN (Print)9781479981823
DOIs
Publication statusPublished - 16 Nov 2015
Event2015 IEEE International Ultrasonics Symposium - Taipei International Convention Center, Taipei, Taiwan, Province of China
Duration: 21 Oct 201524 Oct 2015
http://ewh.ieee.org/conf/ius/ius_2015/

Conference

Conference2015 IEEE International Ultrasonics Symposium
CountryTaiwan, Province of China
CityTaipei
Period21/10/1524/10/15
Internet address

Fingerprint

Printing
Transducers
Gases
Polymers
Substrates
Spatial distribution
Insertion losses
Masks
Bandwidth
Liquids
Processing
Air

Keywords

  • capacitive transducer
  • rapid prototyping
  • air coupled ultrasound
  • cavity resonators
  • substrates
  • polymers
  • printing
  • arrays
  • transducers
  • graphical models

Cite this

O'Leary, R. L. (2015). Gas coupled polymeric capacitive transducers via pad printing. In Proceedings of IEEE International Ultrasonics Symsposium 2015 (pp. 1-4). Piscataway, NJ.: IEEE. https://doi.org/10.1109/ULTSYM.2015.0094
O'Leary, Richard L. / Gas coupled polymeric capacitive transducers via pad printing. Proceedings of IEEE International Ultrasonics Symsposium 2015. Piscataway, NJ. : IEEE, 2015. pp. 1-4
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title = "Gas coupled polymeric capacitive transducers via pad printing",
abstract = "Micropatterning of polymer substrates has been shown to be effective methodology for the manufacture of capacitive transducers. The method involves creating a positive mask of sessile liquid droplets on a polymer substrate. The droplets define the cavity dimensions and spatial distribution, a subsequent processing stage independently defines the cavity depth. Droplets can be defined in a variety of ways – this paper explores the patterning the droplets, and hence cavities, on the polymer substrate via a pad-printing technique. The printing pad is manufactured using 3D printing technique, an example pad is illustrated in Figure 1 – essentially the pad comprises an array of styli. The lateral dimensions and spatial distribution of the styli are replicated via the pattern of deposited droplets on the polymer substrate. The morphology of the styli tips has been explored - planar tips were found to droplet patterns with the highest fidelity. Single element air coupled devices operating with a nominal centre frequency of 500kHz have been constructed and evaluated experimentally. Transducer bandwidths in excess of 100{\%} were observed with two-way insertion loss of 60dB being typical.",
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O'Leary, RL 2015, Gas coupled polymeric capacitive transducers via pad printing. in Proceedings of IEEE International Ultrasonics Symsposium 2015. IEEE, Piscataway, NJ., pp. 1-4, 2015 IEEE International Ultrasonics Symposium, Taipei, Taiwan, Province of China, 21/10/15. https://doi.org/10.1109/ULTSYM.2015.0094

Gas coupled polymeric capacitive transducers via pad printing. / O'Leary, Richard L.

Proceedings of IEEE International Ultrasonics Symsposium 2015. Piscataway, NJ. : IEEE, 2015. p. 1-4.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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O'Leary RL. Gas coupled polymeric capacitive transducers via pad printing. In Proceedings of IEEE International Ultrasonics Symsposium 2015. Piscataway, NJ.: IEEE. 2015. p. 1-4 https://doi.org/10.1109/ULTSYM.2015.0094