中国物理B ›› 2014, Vol. 23 ›› Issue (2): 28102-028102.doi: 10.1088/1674-1056/23/2/028102

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Controlled construction of nanostructures in graphene

李忠军, 李强, 程增光, 李红变, 方英   

  1. National Center for Nanoscience and Technology, Beijing 100190, China
  • 收稿日期:2013-05-04 修回日期:2013-08-05 出版日期:2013-12-12 发布日期:2013-12-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 21173055 and 21161120321).

Controlled construction of nanostructures in graphene

Li Zhong-Jun (李忠军), Li Qiang (李强), Cheng Zeng-Guang (程增光), Li Hong-Bian (李红变), Fang Ying (方英)   

  1. National Center for Nanoscience and Technology, Beijing 100190, China
  • Received:2013-05-04 Revised:2013-08-05 Online:2013-12-12 Published:2013-12-12
  • Contact: Fang Ying E-mail:fangy@nanoctr.cn
  • About author:81.05.ue; 61.48.Gh
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 21173055 and 21161120321).

摘要: We report on the laser-assisted fabrications of nanostructures in graphene membranes supported on polymer films. By using a laser beam to deposit heat locally, irradiated polymer instantaneously melts and vaporizes. During laser drilling of the polymer, the single-layer graphene membrane adheres to the polymer surface and consequently forms tens of nanometer deep wells. Due to the short time scale of laser irradiation, heat diffusion in the polymer is negligible, and the excitation energy is highly confined in the polymer. As a result, graphene nanowells of hundreds of nanometers in diameter can be patterned with high fidelity. With the increasing of nanowell density, we observe the spontaneous formation of nanowrinkles connecting pairs of nanowells in the graphene membranes. Importantly, Raman spectra confirm that no defects are introduced in graphene membranes by laser irradiation under our experimental conditions. Our results highlight the possibility to construct nanostructures and to design novel devices based on graphene.

关键词: graphene, nanowrinkles, laser ablation, polymer drilling

Abstract: We report on the laser-assisted fabrications of nanostructures in graphene membranes supported on polymer films. By using a laser beam to deposit heat locally, irradiated polymer instantaneously melts and vaporizes. During laser drilling of the polymer, the single-layer graphene membrane adheres to the polymer surface and consequently forms tens of nanometer deep wells. Due to the short time scale of laser irradiation, heat diffusion in the polymer is negligible, and the excitation energy is highly confined in the polymer. As a result, graphene nanowells of hundreds of nanometers in diameter can be patterned with high fidelity. With the increasing of nanowell density, we observe the spontaneous formation of nanowrinkles connecting pairs of nanowells in the graphene membranes. Importantly, Raman spectra confirm that no defects are introduced in graphene membranes by laser irradiation under our experimental conditions. Our results highlight the possibility to construct nanostructures and to design novel devices based on graphene.

Key words: graphene, nanowrinkles, laser ablation, polymer drilling

中图分类号:  (Graphene)

  • 81.05.ue
61.48.Gh (Structure of graphene)