| 초록 |
There are many studies of demonstrating capactive sensors for various purposes, detecting physical variation. However, its perfoming principle is dependent on physical changes of dielectric layers. In this study, we developed a new class of microfluidic capacitive sensors with utilizing ionic liquid as electrodes and CNT/PDMS composites (CPCs) as a dielectric layer. The working principle of our sensors was investigated with geometrical changes of microfluidic channel and variations of electric double layer (EDL) capacitance. Our capacitive sensors showed detection of localized pressure, lateral pressure movement, and even temperature variations with high sensitivity. By using multimodal capability, the capacitive sensor was performed as a keypad and applied to a bottle and human skin. This capacitive sensors could offer great opportunity of development for future stretchable electronic devices such as wearable electronics, soft robotics, electronic skin, and healthcare systems. |
