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Semiconductor nanochannels in metallic carbon nanotubes by thermomechanical chirality alteration

Journal Article


Abstract


  • Carbon nanotubes have a helical structure wherein the chirality determines whether they are metallic or semiconducting. Using in situ transmission electron microscopy, we applied heating and mechanical strain to alter the local chirality and thereby control the electronic properties of individual single-wall carbon nanotubes. A transition trend toward a larger chiral angle region was observed and explained in terms of orientation-dependent dislocation formation energy. A controlled metal-to-semiconductor transition was realized to create nanotube transistors with a semiconducting nanotube channel covalently bonded between a metallic nanotube source and drain. Additionally, quantum transport at room temperature was demonstrated for the fabricated nanotube transistors with a channel length as short as 2.8 nanometers.

Publication Date


  • 2021

Citation


  • Tang, D. M., Erohin, S. V., Kvashnin, D. G., Demin, V. A., Cretu, O., Jiang, S., . . . Golberg, D. (2021). Semiconductor nanochannels in metallic carbon nanotubes by thermomechanical chirality alteration. Science, 374(6575), 1616-1620. doi:10.1126/science.abi8884

Scopus Eid


  • 2-s2.0-85122907003

Start Page


  • 1616

End Page


  • 1620

Volume


  • 374

Issue


  • 6575

Place Of Publication


Abstract


  • Carbon nanotubes have a helical structure wherein the chirality determines whether they are metallic or semiconducting. Using in situ transmission electron microscopy, we applied heating and mechanical strain to alter the local chirality and thereby control the electronic properties of individual single-wall carbon nanotubes. A transition trend toward a larger chiral angle region was observed and explained in terms of orientation-dependent dislocation formation energy. A controlled metal-to-semiconductor transition was realized to create nanotube transistors with a semiconducting nanotube channel covalently bonded between a metallic nanotube source and drain. Additionally, quantum transport at room temperature was demonstrated for the fabricated nanotube transistors with a channel length as short as 2.8 nanometers.

Publication Date


  • 2021

Citation


  • Tang, D. M., Erohin, S. V., Kvashnin, D. G., Demin, V. A., Cretu, O., Jiang, S., . . . Golberg, D. (2021). Semiconductor nanochannels in metallic carbon nanotubes by thermomechanical chirality alteration. Science, 374(6575), 1616-1620. doi:10.1126/science.abi8884

Scopus Eid


  • 2-s2.0-85122907003

Start Page


  • 1616

End Page


  • 1620

Volume


  • 374

Issue


  • 6575

Place Of Publication