Characterization of multi-walled carbon nanotube (MWNT) papers using X-band waveguides

Hao Xin, Lu Wang, David Carnahan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Multi-walled carbon nanotubes (MWNT) are characterized at X-band (8-12 GHz) by waveguide measurements. The scattering parameters (S-parameters) of thin MWNT papers containing a large ensemble of randomly oriented nanotubes are measured by a vector network analyzer. An extraction algorithm has been developed to compute the effective complex permittivity (ε= ε-j ε'') and permeability (μ = μ' -j μ'') of the MWNT papers from the measured S-parameters. The extracted effective medium parameters are verified by finite-element simulations using Ansoft HFSS. The uncertainties for this characterization method are analyzed. The extracted conductivity of the MWNT papers is on the order of 1500 S/m and the dielectric constant is on the order of-500. No significant magnetic responses are observed. To overcome the relatively large uncertainty associated with the reflection coefficient S11, the extracted imaginary permittivity (ε'') is fitted by the Drude model and the dielectric constant (ε') and permeability are recalculated.

Original languageEnglish (US)
Title of host publicationIEEE MTT-S International Microwave Symposium Digest
Pages1181-1184
Number of pages4
DOIs
StatePublished - 2007
Event2007 IEEE MTT-S International Microwave Symposium, IMS 2007 - Honolulu, HI, United States
Duration: Jun 3 2007Jun 8 2007

Other

Other2007 IEEE MTT-S International Microwave Symposium, IMS 2007
CountryUnited States
CityHonolulu, HI
Period6/3/076/8/07

Fingerprint

superhigh frequencies
Carbon nanotubes
Waveguides
Permittivity
carbon nanotubes
permittivity
waveguides
Scattering parameters
dielectric permeability
Electric network analyzers
scattering
Nanotubes
analyzers
nanotubes
permeability
reflectance
conductivity
simulation
Uncertainty

Keywords

  • Conductivity
  • Drude model
  • MWNT
  • Permeability
  • Permittivity
  • Waveguide

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Xin, H., Wang, L., & Carnahan, D. (2007). Characterization of multi-walled carbon nanotube (MWNT) papers using X-band waveguides. In IEEE MTT-S International Microwave Symposium Digest (pp. 1181-1184). [4264040] https://doi.org/10.1109/MWSYM.2007.380341

Characterization of multi-walled carbon nanotube (MWNT) papers using X-band waveguides. / Xin, Hao; Wang, Lu; Carnahan, David.

IEEE MTT-S International Microwave Symposium Digest. 2007. p. 1181-1184 4264040.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Xin, H, Wang, L & Carnahan, D 2007, Characterization of multi-walled carbon nanotube (MWNT) papers using X-band waveguides. in IEEE MTT-S International Microwave Symposium Digest., 4264040, pp. 1181-1184, 2007 IEEE MTT-S International Microwave Symposium, IMS 2007, Honolulu, HI, United States, 6/3/07. https://doi.org/10.1109/MWSYM.2007.380341
Xin H, Wang L, Carnahan D. Characterization of multi-walled carbon nanotube (MWNT) papers using X-band waveguides. In IEEE MTT-S International Microwave Symposium Digest. 2007. p. 1181-1184. 4264040 https://doi.org/10.1109/MWSYM.2007.380341
Xin, Hao ; Wang, Lu ; Carnahan, David. / Characterization of multi-walled carbon nanotube (MWNT) papers using X-band waveguides. IEEE MTT-S International Microwave Symposium Digest. 2007. pp. 1181-1184
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