TY  - JOUR
N1  - cited By 17
N2  - 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.
TI  - Microwave conductivity of sorted CNT assemblies
ID  - scholars4410
KW  - carbon nanotube
KW  -  article; chemistry; electric conductivity; microwave radiation
KW  -  Electric Conductivity; Microwaves; Nanotubes
KW  -  Carbon
AV  - none
A1  - Bulmer, J.S.
A1  - Martens, J.
A1  - Kurzepa, L.
A1  - Gizewski, T.
A1  - Egilmez, M.
A1  - Blamire, M.G.
A1  - Yahya, N.
A1  - Koziol, K.K.K.
JF  - Scientific Reports
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905015342&doi=10.1038%2fsrep03762&partnerID=40&md5=d31e16d9e562616f497bbf815c44ba17
VL  - 4
Y1  - 2014///
PB  - Nature Publishing Group
SN  - 20452322
ER  -