Shape-reconfigurable rGO patterned azo-LCN with tailored mechanical and electrical properties
발표자
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초록
내용
The intelligent materials can expand functionality of various applications including optics, and electronics. In this presentation, we introduce multi-stimuli responsive azo functionalized liquid crystalline polymer networks (azo-LCN) monolithically integrated with patterned reduced graphene oxide (rGO) toward drastic enhancement in both mechanical and electrical properties with programmable shape-reconfiguration. The elastic modulus of the azo-LCN/rGO increases 5 times (6.4 GPa), and the electrical conductivity is measured to be 340 S/cm. Remarkably, the azo-LCN/rGO overcomes a trade-off relationship between stiffness and actuation strain. The azo-LCN/rGO demonstrates rapid 2D to 3D shape-transitions under multi-stimuli including UV, NIR, solar-ray and flame, which are induced by synergistic effects between photoisomerization, mismatch of thermal expansion. Finally, kirigami-inspired engineering is adapted to demonstrate potential in shape-reconfigurable stretchable electronics.