Contact Electrification and Adhesion Between Carbon Nanotube and Graphene on Metal Surfaces: Insights from First-principles Study

作     者：Jing Tao Linfeng Wang Jin Li Zhendong Dai Jing Tao;Linfeng Wang;Jin Li;Zhendong Dai

作者机构：Jiangsu Provincial Key Laboratory of Bionic Functional MaterialsCollege of Mechanical and Electrical EngineeringNanjing University of Aeronautics and AstronauticsNanjing210016China College of Aerospace EngineeringNanjing University of Aeronautics and AstronauticsNanjing210016China 

出 版 物：《Journal of Bionic Engineering》 (仿生工程学报（英文版）)

年 卷 期：2022年第19卷第1期

页      面：103-112页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51505217,51435008,and 51705247) the Fundamental Research Funds for the Central Universities(Grant No.1011/56XAA19014) 

主　　题：Contact electrification Adhesion Bio-inspired adhesive CNT First-principles calculation Interfacial interaction 

摘      要：The effect of contact electrification on adhesion has been debated in recent years for gecko and bio-inspired dry adhesion *** understand the fundamentals of this issue for Carbon Nanotube(CNT)dry adhesives,contact electrification and its relationship with adhesion are systematically studied using the first-principles *** transfers from CNT or its special form,graphene,to the metal surface during the contact,and the transferred charge linearly correlates with the work function ***,the adhesion energy is linearly related to the transferred charge for both CNT and *** charge transfers from the flat graphene to metal surfaces than the curved CNT,leading to higher adhesion between graphene and metal *** curved structure of the CNT causes an irregular change of charge at the interface and hinders the charge ***,the curved structure induces electronic localization,which also decreases the interfacial charge *** structure affects contact electrification,and hence adhesion is further demonstrated by the CNT with different deformation when contacting different *** study advances our understanding of contact electrification and its relationship with adhesion at the interface for bio-inspired carbon adhesive materials and sheds light on the control of them for engineering applications.