Mid-air Thermal Display via High-intensity Ultrasound

Abstract

1 OVERVIEW This paper proposes a mid-air system to provide both heating and cooling sensations for hand via a high-intensity ultrasound spot (Fig. 1 (Left)). We employ airborne ultrasound phased arrays (AUPAs), which can generate a high-intensity focal point, at an arbitrary position in the air. By changing the position of the focal point against the hand, our system can provide each thermal sensation, as shown in