세미나

Electro-active soft actuators and bio-inspired artificial muscles have received burgeoning interest as essential components in future electronic devices such as soft haptic-feedback systems, human-friendly wearable electronics, and active biomedical devices. However, for more practical applications, important challenging issues including fast response time, ultra-low input power, robust operation in harsh environments, high-resolution controllability and cost-effectiveness should be solved in near future. Here, we report an electro-ionic antagonistic artificial muscle based on hierarchically porous nitrogen-doped carbon electrodes derived from a microporous poly(triazine-triptycene) organic framework. The hierarchically micro- and mesoporous structures, high specific capacitance of 330 F g-1 in aqueous solution, large specific surface area of 830.46 m2 g-1 and graphitic nitrogen doping offer high electrical conductivity of 0.073 MS m-1 and outstanding volumetric capacitance of 10.4 MF m-3. Furthermore, we demonstrate that a novel electro-ionic antagonistic muscle based on HPNC electrodes successfully displays extremely reliable and large bending deformations and long-term durability under ultra-low input voltages. Therefore, microporous polymer or covalent organic frameworks can be applied to provide significant improvements in electro-active artificial muscles, which can play key roles as technological advances toward bio-inspired actuating devices required for next-generation soft and wearable electronics.