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Updated: Jun 7, 2026

Facile Preparation of Internally Self-assembled Lipid Particles Stabilized by Carbon Nanotubes
09:47

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Published on: February 19, 2016

Impurity effects in nanotubes.

Yuriy Pogorelov1, Volodymyr Turkowski2, Vadim M Loktev3

  • 1IFIMUP, Departamento de FĂ­sica e Astronomia, Universidade do Porto, Porto, Portugal.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|June 5, 2026
PubMed
Summary
This summary is machine-generated.

We studied twisted carbon nanotubes with impurities, finding that impurity concentration creates a mobility gap and then delocalized states. This behavior differs from nontwisted nanotubes, suggesting potential applications.

Keywords:
carbon nanotubesimpurity adatomsspectrum restructuring

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Area of Science:

  • Condensed matter physics
  • Materials science
  • Nanotechnology

Background:

  • Carbon nanotubes exhibit unique electronic properties.
  • Impurity atoms can significantly alter nanotube electronic spectra.
  • 1D Weyl (massless Dirac) modes are a key feature in some nanotube systems.

Purpose of the Study:

  • To investigate the electronic spectra of twisted carbon nanotubes.
  • To analyze the perturbation effects of impurity atoms on these spectra.
  • To compare the behavior of twisted and nontwisted carbon nanotubes.

Main Methods:

  • Utilizing the Anderson hybrid model for theoretical analysis.
  • Examining the hybridization of 1D Weyl modes with localized impurity states.
  • Simulating the impact of varying impurity concentrations (c).

Main Results:

  • Impurity concentration induces a mobility gap near the impurity level.
  • Further increase in impurity concentration leads to delocalized states within the mobility gap.
  • Observed behaviors differ from those in nontwisted carbon nanotubes.

Conclusions:

  • Impurity effects on twisted carbon nanotubes are distinct and concentration-dependent.
  • The formation of mobility gaps and delocalized states offers insights into electronic transport.
  • Potential practical applications in electronic devices are suggested.