講演情報
[20a-D901-5]The utilization of piezo-impedance properties of porous MWCNTs-PDMS nanocomposite for remote sensing via wireless power transmission technology
〇Saman Azhari1, Kouki Kimizuka2, Gabor Mehes1, Yuki Usami2, Yasuhiko Hayashi3, Hirofumi Tanaka2, Takeo Miyake1 (1.Waseda University Graduate School of Information, Production and Systems, 2.Kyushu Institute of Technology, 3.Okayama University)
キーワード：
Wireless Power Transfer、Porous tactile sensor、Piezo-impedance
Integrating sensory devices with wireless power transfer technology for remote sensing requires the implementation of complex electronic circuitry and communication protocols. To overcome this challenge and remotely monitor mechanical force, we directly integrated piezo-responsive porous multi-walled carbon nanotubes/polydimethylsiloxane nanocomposites with a near-field wireless power transfer system. The wireless system transfers power bidirectionally between the transmitter and the sensing receiver at the resonant frequency of 13.56 MHz. The detection principle is based on the mechanical force-induced impedance changes in the receiver circuit. The modulated impedance signal is detected wirelessly at the transmitter circuit via a full-bridge rectifier and a smoothing capacitor. Furthermore, we demonstrate the wireless monitoring of finger bending and applied force using our flexible and disposable sensor without using any energy storage devices. Our approach adds a new path for disposable haptic-based sensory applications that do not require complex communication protocols in medical, robotics, and other fields.