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Confinement of Vibrotactile Stimuli in Narrow Plates

Abstract : On a touch surface, providing a local vibrotactile feedback enables multiusers and multitouch interactions. While the vibration propagation usually impedes this localization, we show in this paper that narrow strip-shaped plates constitute waveguides in which bending waves below a cutoff frequency do not propagate. We provide a theoretical explanation of the phenomenon and experimental validations. We thus show that vibrations up to 2 kHz are well confined on top of the actuated area with vibration amplitude over 1 µm that can be felt by the fingers. The principle was validated with piezoelectric actuators of various shapes and a vibration motor.
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Submitted on : Thursday, September 26, 2019 - 5:31:05 PM
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Ayoub Ben Dhiab, Charles Hudin. Confinement of Vibrotactile Stimuli in Narrow Plates. 2019 IEEE World Haptics Conference (WHC), Jul 2019, Tokyo, Japan. pp.431-436, ⟨10.1109/WHC.2019.8816081⟩. ⟨cea-02298419⟩



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