Pressure dependent conduction of individual multi-walled carbon nanotubes: the effect of mechanical distortions
| Autor: | Chris J. Barnett, Andrew R. Barron, Alvin Orbaek White, Cathren E. Gowenlock |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Band gap Oscillation Dirac (software) General Engineering Bioengineering 02 engineering and technology General Chemistry Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology Thermal conduction 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences law.invention Electrical resistance and conductance law Distortion Deposition (phase transition) General Materials Science Composite material 0210 nano-technology |
| Popis: | Multi-walled carbon nanotubes (MWCNTs) show an oscillation in electrical resistance (from I–V measurements) during mechanical distortion in which peak separation is inversely correlated with the diameter of the MWCNTs. These results provide the first experimental support of the theoretical prediction that distortion causes Van Hove singularities and Dirac cones in MWCNTs to misalign and cause the opening of the band gap, and suggest that when fabricating contacts for CNTs for device applications, the pressure caused by the contact deposition method must be taken into account for manufacturing devices with consistent properties. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|