中文摘要：

螺旋状碳纳米管（coiled carbon nanotubes,CCNTs）是一种弯曲环绕,形成螺线状结构的碳纳米管。其螺旋形态特有的手性、螺旋状,以及非线性力学响应等性质,使其在微纳器件、复合材料等领域具有应用前景,逐渐成为人们关注的热点方向。本文从制备、形成机理、结构调变以及应用几个方面详细阐述了CCNTs的研究进展。

英文摘要：

Coiled carbon nanotubes （CCNTs） are CNTs with spiral structure. The CCNTs possess unique properties of helix, chirality and nonlinear mechanical behavior. It attracts great interests in the synthesis, growth mechanisms and application developments. The CCNTs is commonly synthesized by catalyst-supported chemical vapor deposition （CVD） and floating catalyst CVD. The selective production of CCNTs has been achieved. Based on the analysis of the formation mechanism of CCNTs, the prospects on structure modulation of CCNTs are investigated. The challenges in this field include delicate control of parameters in structure, the synthesis of CCNTs in ring, double helix and the selective production of CCNTs with chirality. Due to the unique properties, some CCNTs have potential applications in nanoelectromechanical devices, composite reinforcements, etc. The applications based on single CCNT, CCNTs array and macroscopic quantity of CCNTs are briefly outlined as well.