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Microwave tunable dielectric properties of multilayer CNT membranes for smart applications

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Abstract

Multilayer multiwall carbon nanotube (MWCNT) silicone composite membranes with thickness greater than 10 μm were prepared with a spin-coating method. Dielectric permittivity and tunability of the circular membranes were measured from 0.1 to 7 GHz by using a single-port coaxial line method. The frequency and bias voltage dependent dielectric properties were interpreted based on percolation theory. The MWCNT membranes could be potentially used to develop smart components and structures working at radio wave or microwave frequencies.

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Acknowledgements

The authors would like to thank Dr. K. Rozanov (ITAE, Russia) for his fruitful discussion and Dr. Y. Chen (NTU, Singapore) for the measurement of TGA. The research was supported by DRTech, Singapore. W.-Y. Yin appreciates the financial support by the State Key Lab of MOI, Zhejiang University, the National Basic Research Program under Grant 2009CB320204 and the NSFC under Grant 60831002 of P.R. China.

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  1. L. Liu

    Present address: Kuang-Chi Institute of Advanced Technologies, Shenzhen, 518057, China

Authors and Affiliations

  1. Temasek Laboratories, National University of Singapore, 5A Engineering Drive 1, Singapore, 117411, Singapore

    L. Liu & Z. H. Yang

  2. School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore

    L. B. Kong

  3. Center for Optical and EM Research, Zhejiang University, Hangzhou, 310058, China

    W. Y. Yin

  4. School of Chemistry and Chemical Engineering, Hua Zhong University of Science and Technology, Wuhan, 430074, China

    S. Wang

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  1. L. Liu
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Correspondence to L. Liu.

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Liu, L., Yang, Z.H., Kong, L.B. et al. Microwave tunable dielectric properties of multilayer CNT membranes for smart applications. Appl. Phys. A 108, 843–848 (2012). https://doi.org/10.1007/s00339-012-6979-2

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  • DOI: https://doi.org/10.1007/s00339-012-6979-2

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