Remotely Displaying Cooling Sensation Using Ultrasound Mist Beam

Abstract

This study describes a midair haptic display that provides a cooling sensation using ultrasound-driven cold air flow cooled by mist vaporization. Non-contact thermal display using ultrasound-driven cold air flow has been reported, but the system uses dry ice as the cold-air source, which limits the range of practical applications. In this study, we propose a method using mist vaporization instead of dry ice to extend the application. Using this system, we demonstrate transporting cold air to a localized spot on a user’s skin.