• 文献标题:   Revolution-assisted direct writing of highly controllable spiral graphene fibers with ultrasensitive photoelectric response
  • 文献类型:   Article
  • 作  者:   NIU YT, WANG S, ZHANG WJ, WANG B, YANG ZP, YONG ZZ, ZHANG CJ, ZHANG YY, LI QW
  • 作者关键词:   revolutionassisted direct writing, spiral graphene fiber, high controllability, photoelectric response, high sensitivity
  • 出版物名称:   COMPOSITES COMMUNICATIONS
  • ISSN:   2452-2139
  • 通讯作者地址:  
  • 被引频次:   2
  • DOI:   10.1016/j.coco.2021.100783 EA MAY 2021
  • 出版年:   2021

▎ 摘  要

Spiral graphene-based fibers have enticing advantages in high breakage elongation and stable electrical property during the tensile process, but the conventional manufacturing methods are complicated and hard to produce in large quantities. Herein, we demonstrated a facile and effective revolution-assisted direct writing strategy for controllably constructing spiral graphene fiber, with a spinneret revolving along a revolution axis in the coagulation bath. The resulting spiral graphene fiber displayed excellent mechanical and electrical stability even when stretched 20000 times at 320% elongation, as well as easily regulatable radius (0.1-3.5 mm) and pitch (1-8 mm) through changing the revolution radius (distance between spinneret and revolution axis) and the motion (horizontal movement and rotation speed) of the spinneret, respectively. Moreover, functionalized with TiO2 nanoparticles, the obtained spiral composite fiber featured a highly sensitive photoelectric response to its tiny deformation, implying a great potential for liquid micro-vibration detection. This study provides a new strategy to fabricate controllably spiral graphene-based fibers with high properties.