POROUS NANOWIRE-POLYDIMETHYLSILOXANE NANOCOMPOSITE FOR WEARABLE PRESSURE SENSOR
oxide nanowire as nanocomposite dielectric layer via a simple porogen-assisted process. By choosing the appropriate loading of nanowire into the matrix, the maximum sensitivity of the capacitive sensor was 0.717 kPa-1 at a subtle pressure range and 0.200 kPa-1 at a medium pressure range, exhibiting a broad detection range from as little as a sesame seed up to as high as a ceramic mug, and revealing excellent operation stability over 4000 cycles. Furthermore, practical application measurements further showcased that this nanocomposite porous pressure sensor was capable of detecting finger bending, calligraphy writing, voice-induced vibration, air blowing, and hydrostatic underwater pressure, as well as identifying object spatial distribution. The results signify that these flexible nanowire-porous elastomeric nanocomposites could be used for capacitive-based pressure sensors for diverse health-care and skin-like applications.
Keywords - Capacitive Pressure Sensor; Porous Polydimethylsiloxane; WearableElectronic; Zinc Oxide Nanowire.