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Acoustic levitation for multimodal volumetric display

Masuda, N; Hirayama, R; Plasencia, DM; Subramanian, S; (2020) Acoustic levitation for multimodal volumetric display. In: Proceedings of the Optical Trapping and Optical Micromanipulation XVII. (pp. 114630Q-1-114630Q-6). SPIE: Online Only. Green open access

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Current display approaches, such as VR, allow us to get a glimpse of multimodal 3D experiences, but users need to wear headsets as well as other devices in order to trick our brains into believing that the content we are seeing, hearing or feeling is real. Light-field, holographic or volumetric displays avoid the use of headsets, but they constraint the user’s ability to interact with them (e.g. content is not reachable to user’s hands, user’s constrained to specific locations) and, most importantly, still cannot simultaneously deliver sound and touch. In this talk, we will present the Multimodal Acoustic Trapping Display (MATD): a mid-air volumetric display that can simultaneously deliver visual, tactile and audio content, using phased arrays of ultrasound transducers. The MATD makes use of ultrasound to trap, quickly move and colour a small particle in mid-air, to create coloured volumetric shapes visible to our naked eyes. Making use of the pressure delivered by the ultrasound waves, the MATD can also create points of high pressure that our bare hands can feel and induce air vibrations that create audible sound. The system demonstrates particle speeds of up to 8.75 m/s and 3.75 m/s in the vertical and horizontal directions, respectively. In addition, our technique offers opportunities for non-contact, highspeed manipulation of matter, with applications in computational fabrication and biomedicine.

Type: Proceedings paper
Title: Acoustic levitation for multimodal volumetric display
Event: SPIE Nanoscience + Engineering
Dates: 24 August 2020 - 28 August 2020
ISBN-13: 9781510637320
Open access status: An open access version is available from UCL Discovery
DOI: 10.1117/12.2569328
Publisher version: https://doi.org/10.1117/12.2569328
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: https://discovery.ucl.ac.uk/id/eprint/10110412
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