Investigation of Chirality Selection Mechanism of Single-Walled Carbon Nanotube

Abstract

This project involved investigation of two significant mechanistic aspects of carbon nanotube (CNT) array growth under chemical vapor deposition conditions: chirality selectivity and termination. The research involved development of a proper Transmission Electron Microscopy (TEM) sample preparation method that allowed direct observation of interfaces between CNTs and catalyst layers and lead to optimized growth conditions for synthesis of short, less dense, and highly crystalline single-walled carbon nanotubes. Based on ex-situ and in-situ TEM investigation, a modified growth termination model was proposed to better explain various phenomena of carbon nanotube growth and growth termination. The results strongly suggest that growth termination of CNT forests is affected by the morphological evolution of catalyst particles.

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Document Details

Document Type
Technical Report
Publication Date
Jul 17, 2015
Accession Number
ADA626886

Entities

People

  • Seung M. Kim

Organizations

  • Korea Institute of Science and Technology

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Carbon Nanotubes
  • Catalysts
  • Chemical Vapor Deposition
  • Composite Materials
  • Electron Microscopes
  • Electron Microscopy
  • Electrons
  • Energy
  • Fullerenes
  • High Resolution
  • Materials
  • Materials Processing
  • Microscopy
  • Observation
  • Particles
  • Personal Information Managers
  • Vapor Deposition

Readers

  • Nanocomposite Materials Science
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene