Improving Performance of Ultrasound Transducers with Aerogel Matching Layer for Tactile Display

Georgios Korres, Mohamad Eid

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

Abstract

Focused ultrasound is emerging as a novel technique for mid-air tactile display. A striking limitation is the low transduction of ultrasound energy due, in part, to the massive acoustic impedance mismatch between the piezoelectric transducer and air. This paper investigates the use of silica aerogel alloys as a matching layer to improve transduction efficiency in air for mid-air tactile display. Two transducers are manually machined and evaluated to proof-concept the theory proposed in this paper. Results demonstrated that the manually machined transducers produce 2-3 dBV acoustic energy in air compared to the commercially available transducer. Future work involves exploring an automated process to machine a large number of these transducers and buiding an array with the modified transducers in order to perceptually evaluate the performance for tactile display.

Original languageEnglish (US)
Title of host publicationHAVE 2018 - IEEE International Symposium on Haptic, Audio-Visual Environments and Games, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538658383
DOIs
StatePublished - Nov 26 2018
Event16th IEEE International Symposium on Haptic, Audio-Visual Environments and Games, HAVE 2018 - Dalian, China
Duration: Sep 20 2018Sep 21 2018

Other

Other16th IEEE International Symposium on Haptic, Audio-Visual Environments and Games, HAVE 2018
CountryChina
CityDalian
Period9/20/189/21/18

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Keywords

  • matching layer
  • mid-air tactile display
  • silica aerogel alloys
  • ultrasound transducer

ASJC Scopus subject areas

  • Human-Computer Interaction
  • Media Technology
  • Human Factors and Ergonomics

Cite this

Korres, G., & Eid, M. (2018). Improving Performance of Ultrasound Transducers with Aerogel Matching Layer for Tactile Display. In HAVE 2018 - IEEE International Symposium on Haptic, Audio-Visual Environments and Games, Proceedings (pp. 1-6). [8547511] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/HAVE.2018.8547511