Date

Place

[20-4]
17:15 ~ 17:30
Title:Elastomeric Nanowire Composite for Tunable Flexible Pressure Sensors
Yunsik Joo, Jaeyoung Yoon, and Yongtaek Hong (Seoul Nat'l Univ., Korea)
Abstract: Flexible pressure sensors can be applied to human-machine interfaces, next generation touch interfaces for wearable displays and real-time monitoring of blood pressure.?For these applications, pressure sensors must have high pressure sensitivity, flexibility, stability and also tunable sensitivity like human skin. Because pressure sensors with customized sensitivity suitable for each application are desirable, the tunable pressure sensitivity of the sensor is needed. Recently, our group reported a capacitive flexible pressure sensor with elastomeric nanowire composite.?However, the pressure sensitivity of the reported sensor was fixed and not tunable. In this paper, we report highly sensitive and flexible pressure sensor with tunable sensitivity. Silver nanowires (AgNWs) embedded polydimethylsiloxane (PDMS), the elastomeric nanowire composite, was integrated with polymeric dielectric layer and printed electrode to obtain capacitive pressure sensor. By controlling the mechanical property of the matrix PDMS of the nanowire composite, we can tune the pressure sensitivity of the sensor easily. The sensor also shows high sensitivity (sensitivity > 3kPa-1) and high bending stability (r~5mm, < 10% degradation).
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