Tactile Display Using Acoustic Radiation Pressure Scanning

Abstract

We propose a new tactile display using acoustic radiation pressure. The display produces localaized force within a 1 mm diameter focal point and 2 gf total force. The fructuation of the gain was within 4 dB in the range of 20-1000 Hz. By steering the focal point using a linear phased array, the display creates various precise spatio-temporal patterns of pressure distribution on the skin. We conducted psychophisical experiments on tactile apparent movement and confirmed that tactile apparent movement can be observed even if non-vibratory simului are used.