Effective Lubricating Effect of 0D Nanodiamonds for Highly Bendable and stretchable Graphene Liquid Crystalline Fibers
발표자
김진효 (한국과학기술원)
연구책임자
김상욱 (한국과학기술원)
초록
내용
Graphene fibers (GFs) with highly aligned 2D sheet stacking exhibit synergistically enhanced electrical conductivity and mechanical strength, making them promising materials for wearable sensors, lightweight flexible conductors, textile-based energy devices, and flexible heaters. We demonstrate that nanodiamonds (NDs) act as molecular-level lubricants in highly aligned graphene liquid-crystalline fibers. Introduced during GF processing, NDs mitigate excessive intersheet interactions and function as nanoscale bearings that reduce friction between adjacent graphene sheets under deformation. Consequently, reduced graphene/nanodiamond (r-GND) fibers exhibit enhanced elongation and excellent bending stability via efficient stress relaxation without sacrificing electrical conductivity, enabling facile weaving or knitting into textiles and highlighting their potential for next-generation wearable conductors and flexible heaters.