Ric Holland's Blog

Rendering Volumetric Haptic Shapes in Mid Air using Ultrasound

Bristol University scientists presenting 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, a technology we hope will soon be available in conjunction with Microsoft HoloLens for a perfect holographic tactile experience.

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.