Advertisement

Size-Dependent Evolution of Graphene Nanopores Under Thermal Excitation

Authors

  • Tao Xu,

    1. SEU-FEI Nano-Pico Center, Key Lab of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, PR China
    Search for more papers by this author
  • Kuibo Yin,

    1. SEU-FEI Nano-Pico Center, Key Lab of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, PR China
    Search for more papers by this author
  • Xiao Xie,

    1. SEU-FEI Nano-Pico Center, Key Lab of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, PR China
    Search for more papers by this author
  • Longbing He,

    1. SEU-FEI Nano-Pico Center, Key Lab of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, PR China
    Search for more papers by this author
  • Binjie Wang,

    1. SEU-FEI Nano-Pico Center, Key Lab of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, PR China
    2. FEI Company, Shanghai Nanoport, No. 690 Bibo Road, Shanghai, 201203, PR China
    Search for more papers by this author
  • Litao Sun

    Corresponding author
    1. SEU-FEI Nano-Pico Center, Key Lab of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, PR China
    • SEU-FEI Nano-Pico Center, Key Lab of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, PR China.
    Search for more papers by this author

Abstract

original image

Graphene nanopores expand when pore diameter is larger than membrane thickness after heat treatment; otherwise, nanopore size shrinks. Such size-dependent evolutionary mechanism of nanopores is considered as thermal-induced migration of uncombined carbon atoms. The amount of carbon adatoms determines the extent of diameter change. This could provide an applicable strategy for nanopore fabrication.

Ancillary