Dai-Ming Tang1,Sergey V. Erohin2,Dmitry G. Kvashnin3,Victor A. Demin3,Ovidiu Cretu1,Song Jiang4,Lili Zhang4,Peng-Xiang Hou4,Guohai Chen5,Don Futaba5,Yongjia Zheng6,Rong Xiang6,Xin Zhou1,Feng-Chun Hsia1,Naoyuki Kawamoto1,Masanori Mitome1,Yoshihiro Nemoto1,Fumihiko Uesugi1,Masaki Takeguchi1,Shigeo Maruyama6,Hui-Ming Cheng4,7,8,Yoshio Bando9,Chang Liu4,Pavel B. Sorokin2,Dmitri Golberg10,1
National Institute for Materials Science1,National University of Science and Technology MISiS2,Emanuel Institute of Biochemical Physics3,Institute of Metal Research, Chinese Academy of Sciences4,National Institute of Advanced Industrial Science and Technology (AIST)5,The University of Tokyo6,Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute7,Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences8,University of Wollongong9,Queensland University of Technology (QUT)10
Dai-Ming Tang1,Sergey V. Erohin2,Dmitry G. Kvashnin3,Victor A. Demin3,Ovidiu Cretu1,Song Jiang4,Lili Zhang4,Peng-Xiang Hou4,Guohai Chen5,Don Futaba5,Yongjia Zheng6,Rong Xiang6,Xin Zhou1,Feng-Chun Hsia1,Naoyuki Kawamoto1,Masanori Mitome1,Yoshihiro Nemoto1,Fumihiko Uesugi1,Masaki Takeguchi1,Shigeo Maruyama6,Hui-Ming Cheng4,7,8,Yoshio Bando9,Chang Liu4,Pavel B. Sorokin2,Dmitri Golberg10,1
National Institute for Materials Science1,National University of Science and Technology MISiS2,Emanuel Institute of Biochemical Physics3,Institute of Metal Research, Chinese Academy of Sciences4,National Institute of Advanced Industrial Science and Technology (AIST)5,The University of Tokyo6,Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute7,Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences8,University of Wollongong9,Queensland University of Technology (QUT)10
Carbon nanotubes have a helical structure where the chirality determines them to be metallic or semiconducting. Using in situ transmission electron microscopy,<sup>[1]</sup> we applied heating and mechanical strain to alter the local chirality and thus to control the electronic properties of individual carbon nanotubes. A transition trend towards larger chiral angle region was observed and explained in terms of orientation-dependent dislocation formation energy. Controlled metal-to-semiconductor transition was realized to create nanotube transistors with a semiconducting nanotube channel covalently bonded between metallic nanotube source and drain. In addition, quantum transport at room temperature was demonstrated for the fabricated nanotube transistors with the channel length down to 2.8 nanometers.<sup>[2]</sup><br/>References<br/>[1] D.-M. Tang <i>et al</i>. Ultramicroscopy, <b>194</b>, 108, (2018).<br/>[2] D.-M. Tang <i>et al</i>. Science, <b>374</b>, 1616 (2021).