Journal
IEEE TRANSACTIONS ON HAPTICS
Volume 3, Issue 3, Pages 155-165Publisher
IEEE COMPUTER SOC
DOI: 10.1109/ToH.2010.4
Keywords
Emerging technologies; haptic I/O; tactile displays; 3D displays; virtual reality
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Funding
- Japan Society for the Promotion of Science (JSPS) [19.1708]
- JSPS [18206046]
- Grants-in-Aid for Scientific Research [18206046] Funding Source: KAKEN
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This paper describes a tactile display which provides unrestricted tactile feedback in air without any mechanical contact. It controls ultrasound and produces a stress field in a 3D space. The principle is based on a nonlinear phenomenon of ultrasound: Acoustic radiation pressure. The fabricated prototype consists of 324 airborne ultrasound transducers, and the phase and intensity of each transducer are controlled individually to generate a focal point. The DC output force at the focal point is 16 mN and the diameter of the focal point is 20 mm. The prototype produces vibrations up to 1 kHz. An interaction system including the prototype is also introduced, which enables users to see and touch virtual objects.
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