Tactile Sensations in Mid-Air

Oct-13-13 Powered by ultrasound, the UltraHaptics system allows users to experience tactile sensations in mid-air—a potential step toward holograms that can be felt.

Based on the principle of acoustic radiation force, UltraHaptics uses a phased array of ultrasonic transducers to focus sound wave energy at a single point. Ultrasound waves displace air and create a pressure difference, and many waves arriving together can create a force strong enough to cause sensations on human skin. Building on that technology, the team was able to create multipoint haptic feedback in mid-air, over a touch surface.

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[GIZMAG.COM]
[BRISTOL INTERACTION AND GRAPHICS]

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