Tuning the Nanofriction Between Two Graphene Layers by External Electric Fields: A Density Functional Theory Study

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• 作者：Jianjun Wang ; Jinming Li ; Chong Li ; Xiaolin Cai ; Wenguang Zhu ; Yu Jia
• 关键词：Nanofriction ; Graphene ; Density functional theory (DFT) ; External electric field
• 刊名：Tribology Letters
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：61
• 期：1
• 全文大小：872 KB
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• 作者单位：Jianjun Wang (1) (2)
  Jinming Li (3)
  Chong Li (2)
  Xiaolin Cai (2)
  Wenguang Zhu (4)
  Yu Jia (2)
  
  1. College of Science, Zhongyuan University of Technology, Zhengzhou, 450007, Henan, China
  2. International Laboratory for Quantum Functional Materials of Henan and School of Physics and Engineering, Zhengzhou University, Zhengzhou, 450001, China
  3. Department of Physics, Henan Institute of Education, Zhengzhou, 450046, Henan, China
  4. ICQD, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, Anhui, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Tribology, Corrosion and Coatings
  Surfaces and Interfaces and Thin Films
  Theoretical and Applied Mechanics
  Physical Chemistry
  Nanotechnology
  
• 出版者：Springer Netherlands
• ISSN：1573-2711

文摘

Understanding and controlling nanofriction are important in practical applications of nanotechnology. Our first-principles calculations reveal that interlayer nanofriction between two graphene layers can be tuned by applying an external electric field; the tuned magnitude of the coefficient of friction ranges from −30 to 30 %, which is attributed to the increased disparity of electronic structures between AA and AB stackings. This effect is significantly observed in boron- or nitrogen-doped systems compared with a pristine graphene system. Our findings present a feasible and precise strategy to tune the frictional properties of graphene systems.