Rendering volumetric haptic shapes in mid-air using ultrasound: Proceedings of ACM SIGGRAPH Asia 2014

Benjamin Long, Sue Ann Seah, Tom Carter, Sriram Subramanian

Research output: Contribution to journalArticle (Academic Journal)

105 Citations (Scopus)
13951 Downloads (Pure)

Abstract

We present a method for creating three-dimensional haptic shapes in mid-air using focused ultrasound. This approach applies the principles of acoustic radiation force, whereby the non-linear effects of sound produce forces on the skin which are strong enough to generate tactile sensations. This mid-air haptic feedback eliminates the need for any attachment of actuators or contact with physical devices. The user perceives a discernible haptic shape when the corresponding acoustic interference pattern is generated above a precisely controlled two-dimensional phased array of ultrasound transducers. In this paper, we outline our algorithm for controlling the volumetric distribution of the acoustic radiation force field in the form of a three-dimensional shape. We demonstrate how we create this acoustic radiation force field and how we interact with it. We then describe our implementation of the system and provide evidence from both visual and technical evaluations of its ability to render different shapes. We conclude with a subjective user evaluation to examine users’ performance for different shapes.
Original languageEnglish
Article number181
Number of pages10
JournalACM Transactions on Graphics
Volume33
Issue number6
Early online date19 Nov 2014
DOIs
Publication statusPublished - Nov 2014

Keywords

  • 3D haptic shapes
  • acoustic radiation forces
  • tactile displays

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