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    This study presents a novel soft wearable device for haptic communication. It generates high-frequency vibrotactile feedback using fluidics, outperforming current technologies.

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    Area of Science:

    • Haptic Technology
    • Wearable Devices
    • Textile Engineering

    Background:

    • Vibration is crucial for haptic communication, with vibrotactile cues offering salient notifications via wearable devices.
    • Fluidic textile-based devices are promising for integrating haptic feedback into compliant wearables.
    • Existing fluidic systems use valves, limiting achievable vibration frequencies (typically <100 Hz).

    Purpose of the Study:

    • To introduce a novel, all-textile soft wearable device for vibrotactile feedback.
    • To demonstrate a fluidic mechanism capable of generating high-frequency vibrations.
    • To compare the performance of this device against state-of-the-art electromechanical actuators.

    Main Methods:

    • Design and fabrication of a soft, textile-based fluidic device.
    • Utilizing controlled inlet pressure and mechanofluidic instability for vibration generation.
    • Characterization of vibration frequencies and amplitudes.

    Main Results:

    • The device achieves controllable vibrotactile feedback with frequencies between 183 and 233 Hz.
    • Vibration amplitudes range from 23 to 114 g.
    • The device offers comparable frequencies and greater amplitudes than current electromechanical actuators.

    Conclusions:

    • A novel soft vibrotactile wearable device has been developed using fluidic principles.
    • This technology surpasses limitations of valve-based systems and electromechanical actuators in frequency and amplitude.
    • The device provides compliant and conforming haptic feedback suitable for advanced wearables.