TY - GEN
T1 - Polyurethane-Based Functionalized CNT Composites as Absorbers for Microwave Applications
AU - Jehangir, Syed S.
AU - Hussein, Mousa I.
AU - Rajmohan, I. J.
AU - Al Hayek, Yousef Saad
AU - Clement, Q.
AU - Vukadinovic, N.
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/7
Y1 - 2019/7
N2 - 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.
AB - 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.
KW - absorption efficiency
KW - chemical vapour deposition (CVD)
KW - cobalt-doped iron (CoFe)
KW - functionalized CNT
KW - spectral range
UR - http://www.scopus.com/inward/record.url?scp=85075080433&partnerID=8YFLogxK
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U2 - 10.1109/IMWS-AMP.2019.8880136
DO - 10.1109/IMWS-AMP.2019.8880136
M3 - Conference contribution
AN - SCOPUS:85075080433
T3 - IMWS-AMP 2019 - 2019 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications
SP - 91
EP - 93
BT - IMWS-AMP 2019 - 2019 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 5th IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP 2019
Y2 - 16 July 2019 through 18 July 2019
ER -