Accession Number:

ADA626886

Title:

Investigation of Chirality Selection Mechanism of Single-Walled Carbon Nanotube

Descriptive Note:

Final rept. 1 Jun 2014-31 May 2015

Corporate Author:

KOREA INST OF SCIENCE AND TECHNOLOGY JEONBUK

Personal Author(s):

Report Date:

2015-07-17

Pagination or Media Count:

19.0

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.

Subject Categories:

  • Physical Chemistry
  • Refractory Fibers
  • Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE