Van der Waals Welding of Carbon Nanotubes with Near‐Limit High Strength
Abstract
Abstract The strength of carbon nanotube (CNT) bundles and fibers is generally much lower than that of single CNTs, the short length of CNT components results in the assembly strength can only be contributed by the weak shearing interaction between CNTs. Here, the welding of CNTs by a fast chemical‐vapor‐deposition self‐assembly (FCVDS) technique using TiO 2 nanoparticles as the solder is reported. It is simple, fast, pressure‐free, applicable to ambient conditions, and can weld samples with macroscale length. The welded junctions have a mechanical strength approaching the tensile strength of a single CNT. Whereas the interface interaction between TiO 2 and CNTs is only contributed by Van der Waals forces, avoiding the destruction of the defect‐free structure of CNTs. The solder mass can be only ≈1 wt% of welded CNTs.
Article Details
Authors (8)
Yunxiang Bai
Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical Engineering Tsinghua University Beijing 100084 China
Hongjie Yue
Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical Engineering Tsinghua University Beijing 100084 China
Yukang Zhu
Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical Engineering Tsinghua University Beijing 100084 China
Jun Gao
Qingdao Institute of Bioenergy and Bioprocess Technology
Mengxiong Liu
Department of Engineering Mechanics Tsinghua University Beijing 100084 China
Shijun Wang
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Chinese Academy of Sciences Beijing 100190 China
Rufan Zhang
Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering
Fei Wei
Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering