Mechanically and Electrically Stable Ionic Composites for Strain-Insensitive Dual-Mode Pressure/Proximity Sensor
발표자
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초록
내용
A stretchable pressure sensor independent of disturbances is crucial for wearable applications. In this study, we introduce a stretchable and strain-insensitive pressure sensor, achieved by establishing a conductive pathway through an ionic bridge between conductive fillers. With a micro-patterned insulating layer, our pressure sensor exhibits high strain insensitivity under tensile strain (~ 50 %) and bending curvature (~ 1 mm). Moreover, it functions as a capacitive-type proximity sensor capable of identifying approaching objects with high sensitivity (capacitance change (ΔC/C0) of -0.88). As a proof-of-concept, our dual-mode pressure sensor with a multichannel array enables real-time monitoring of contact/noncontact pressure distribution regardless of mechanical interference and surface roughness. Our approach to achieving high sensitivity and selectivity for desired contact/noncontact stimuli independent of mechanical interferences offers a novel platform for practical sensor applications.