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Non-contact Method for Producing Tactile Sensation Using Airborne Ultrasound

  • Takayuki Iwamoto
  • Mari Tatezono
  • Hiroyuki Shinoda
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5024)

Abstract

This paper describes a new tactile device which produces stress fields in 3D space. Combined with 3D stereoscopic displays, this device is expected to provide high-fidelity tactile feedback for the interaction with 3D visual objects. The principle is based on a non-linear phenomenon of ultrasound, acoustic radiation pressure. We fabricated a prototype device to confirm the feasibility as a tactile display. The prototype consists of 91 airborne ultrasound transducers packed in the hexagonal arrangement, a 12 channel driving circuit, and a PC. The transducers which were in the same distance from the center of the transducer array were connected to form a 12 channel annular array. The measured total output force within the focal region was 0.8 gf. The spatial resolution was 20 mm. The prototype could produce sufficient vibrations up to 1 kHz.

Keywords

Tactile display Airborne ultrasound Acoustic radiation pressure 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Takayuki Iwamoto
    • 1
  • Mari Tatezono
    • 1
  • Hiroyuki Shinoda
    • 1
  1. 1.Department of Information Physics and Computing Graduate School of Information Science and TechnologyThe University of TokyoTokyoJapan

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