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Updated: May 8, 2026

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology
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Molecular layer deposition on carbon nanotubes.

Joseph J Brown1, Robert A Hall, Paul E Kladitis

  • 1Department of Mechanical Engineering, University of Colorado , 427 UCB, Boulder, Colorado 80309-0427, United States.

ACS Nano
|August 15, 2013
PubMed
Summary

Molecular layer deposition (MLD) created conformal coatings on carbon nanotubes (CNTs). This process enhanced CNT network mechanical properties, significantly improving Young

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Surface Chemistry

Background:

  • Carbon nanotubes (CNTs) possess excellent mechanical properties but require surface modification for enhanced performance.
  • Conformal coatings are crucial for preserving and improving the intrinsic properties of nanostructures like CNTs.

Purpose of the Study:

  • To investigate the application of metalcone Molecular Layer Deposition (MLD) for coating bulk carbon nanotubes.
  • To evaluate the impact of MLD coatings on the mechanical properties of CNT networks.

Main Methods:

  • Utilized metalcone MLD chemistries including alucone, titanicone, and zincone to deposit films on CNTs.
  • Employed Transmission Electron Microscopy (TEM) to analyze coating conformality and structure.
  • Conducted mechanical testing on MLD-coated CNT sheets to determine Young's Modulus.

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Main Results:

  • Achieved 3D conformal MLD films directly on CNTs without requiring an adhesion layer.
  • Demonstrated significant improvements in Young's Modulus of CNT networks after MLD coating.
  • Young's Modulus increased from 510 MPa for uncoated CNTs to up to 8.7 GPa for composite MLD coatings.

Conclusions:

  • Metalcone MLD is an effective technique for conformally coating carbon nanotubes.
  • MLD coatings substantially enhance the mechanical strength of CNT networks.
  • The direct growth capability of MLD on CNTs simplifies the fabrication process.