We propose a film device that can be attached to flat surfaces, including touch panels, to remotely reduce surface friction by irradiating airborne ultrasound. In this article, we present a film-air resonance structure that produces large-amplitude surface vibrations excited by airborne ultrasound. We confirmed via simulation that the surface amplitude increases to a level sufficient to reduce friction at the designed frequency. It was also observed in an experiment using a prototype that the friction between a finger and film surface is sharply reduced, and the surface vibrates with sufficient amplitude when touched with a finger.

中文翻译：

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通过机载超声波远程减少谐振膜表面摩擦


我们提出了一种薄膜装置，可以附着在包括触摸面板在内的平坦表面上，通过照射空气传播的超声波来远程减少表面摩擦。在本文中，我们提出了一种薄膜-空气共振结构，该结构可产生由空气传播的超声波激发的大幅面振动。我们通过模拟确认，表面振幅增加到足以减少设计频率下的摩擦的水平。在使用原型机进行的实验中还观察到，手指与薄膜表面之间的摩擦力急剧减小，并且当用手指触摸时，表面以足够的幅度振动。