Sonovortex: Aerial Haptic Layer Rendering by Aerodynamic Vortex and Focused Ultrasound
This work addresses the need for more expressive and effective aerial haptic displays for users in human-computer interaction, though it appears incremental as it builds on existing haptic technologies.
The paper tackled the problem of enhancing aerial haptic displays by combining aerodynamic vortex and focused ultrasound technologies, resulting in improved resolution, distance, and force magnitude without direct interference between stimuli.
In this paper, a method of rendering aerial haptics that uses an aerodynamic vortex and focused ultrasound is presented. Significant research has been conducted on haptic applications based on multiple phenomena such as magnetic and electric fields, focused ultrasound, and laser plasma. By combining multiple physical quantities; the resolution, distance, and magnitude of force are enhanced. To combine multiple tactile technologies, basic experiments on resolution and discrimination threshold are required. Separate user studies were conducted using aerodynamic and ultrasonic haptics. Moreover, the perception of their superposition, in addition to their resolution, was tested. Although these fields cause no direct interference, the system enables the simultaneous perception of the tactile feedback of both stimuli. The results of this study are expected to contribute to expanding the expression of aerial haptic displays based on several principles.