Polyurethane-Based Functionalized CNT Composites as Absorbers for Microwave Applications

Syed S. Jehangir, Mousa I. Hussein, I. J. Rajmohan, Y. Haik, Q. Clement, N. Vukadinovic

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

Abstract

In this work, we present the comparison of the electrical properties of polyurethane embedded basic carbon nanotubes (CNT) with the functionalized CNT (cobalt-iron-doped: CoFe) nanoparticles. The basic composite with CNT concentration of 5 wt% and the functionalized CoFe composites with CNT concentrations of 5%, 10%, and 20% are prepared using chemical vapour deposition (CVD) technique. The dielectric properties along with the loss tangent values are measured using an openended coaxial probe and compared in the spectral range of 0.2 - 20 GHz. The samples are also evaluated for its reflection loss measurements at normal incidence. The measurement results show that for a given thickness of the samples, the functionalized CNT composites exhibit high absorption efficiencies or lower reflection losses as compared to the basic CNT composite. Such functionalized composites can be used to replace the common heavyweight materials used for microwave applications.

Original languageEnglish
Title of host publicationIMWS-AMP 2019 - 2019 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages91-93
Number of pages3
ISBN (Electronic)9781728109350
DOIs
Publication statusPublished - Jul 2019
Event5th IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP 2019 - Bochum, Germany
Duration: 16 Jul 201918 Jul 2019

Publication series

NameIMWS-AMP 2019 - 2019 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications

Conference

Conference5th IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP 2019
CountryGermany
CityBochum
Period16/7/1918/7/19

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Keywords

  • absorption efficiency
  • chemical vapour deposition (CVD)
  • cobalt-doped iron (CoFe)
  • functionalized CNT
  • spectral range

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Instrumentation

Cite this

Jehangir, S. S., Hussein, M. I., Rajmohan, I. J., Haik, Y., Clement, Q., & Vukadinovic, N. (2019). Polyurethane-Based Functionalized CNT Composites as Absorbers for Microwave Applications. In IMWS-AMP 2019 - 2019 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (pp. 91-93). [8880136] (IMWS-AMP 2019 - 2019 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IMWS-AMP.2019.8880136