eprintid: 4410
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/44/10
datestamp: 2023-11-09 16:16:05
lastmod: 2023-11-09 16:16:05
status_changed: 2023-11-09 15:58:23
type: article
metadata_visibility: show
creators_name: Bulmer, J.S.
creators_name: Martens, J.
creators_name: Kurzepa, L.
creators_name: Gizewski, T.
creators_name: Egilmez, M.
creators_name: Blamire, M.G.
creators_name: Yahya, N.
creators_name: Koziol, K.K.K.
title: Microwave conductivity of sorted CNT assemblies
ispublished: pub
keywords: carbon nanotube, article; chemistry; electric conductivity; microwave radiation, Electric Conductivity; Microwaves; Nanotubes, Carbon
note: cited By 17
abstract: Recent progress with tailored growth and post-process sorting enables carbon nanotube (CNT) assemblies with predominantly metallic or semi-conducting concentrations. Cryogenic and microwave measurements performed here show transport dimensionality and overall order increasing with increasing metallic concentration, even in atmospheric doping conditions. By 120 GHz, the conductivity of predominantly semi-conducting assemblies grew to 400 its DC value at an increasing growth rate, while other concentrations a growth rate that tapered off. A generalized Drude model fits to the different frequency dependent behaviors and yields useful quality control parameters such as plasma frequency, mean free path, and degree of localization. As one of the first demonstrations of waveguides fabricated from this material, sorted CNTs from both as-made and post-process sources were inserted into sections of practical micro-strip. With both sources, sorted CNT micro-strip increasingly outperformed the unsorted with increasing frequency - illustrating that sorted CNT assemblies will be important for high frequency applications.
date: 2014
publisher: Nature Publishing Group
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905015342&doi=10.1038%2fsrep03762&partnerID=40&md5=d31e16d9e562616f497bbf815c44ba17
id_number: 10.1038/srep03762
full_text_status: none
publication: Scientific Reports
volume: 4
refereed: TRUE
issn: 20452322
citation:   Bulmer, J.S. and Martens, J. and Kurzepa, L. and Gizewski, T. and Egilmez, M. and Blamire, M.G. and Yahya, N. and Koziol, K.K.K.  (2014) Microwave conductivity of sorted CNT assemblies.  Scientific Reports, 4.   ISSN 20452322