In order to pave the way for the widespread use of eco-friendly materials for novel applications, there is a growing need for morphological, mechanical and electrical, and microwave characterization techniques. The measurement of scattering parameters is an accurate technique for the microwave characterization of novel materials, but it requires a number of components, including waveguides, adapters, and so on. The band of measurements is also limited to the working band of the waveguide used. A method of retrieving waveguide scattering parameters from permittivity values is devised. The method is validated with measurements of the scattering parameters in a waveguide. The method is tested with composites based on biochar derived from sewage sludge and a standard epoxy sample. The addition of biochar considerably reduces transmission scattering and is found to be a suitable candidate for filling composite materials.

Analysis of Transmission Properties of Sludge Biochar Composites in the C-Band / Yasir, Muhammad; Savi, Patrizia. - In: RADIO SCIENCE LETTERS. - ISSN 2736-2760. - ELETTRONICO. - 4:(2022), pp. 1-4. [10.46620/22-0032]

Analysis of Transmission Properties of Sludge Biochar Composites in the C-Band

Patrizia Savi
2022

Abstract

In order to pave the way for the widespread use of eco-friendly materials for novel applications, there is a growing need for morphological, mechanical and electrical, and microwave characterization techniques. The measurement of scattering parameters is an accurate technique for the microwave characterization of novel materials, but it requires a number of components, including waveguides, adapters, and so on. The band of measurements is also limited to the working band of the waveguide used. A method of retrieving waveguide scattering parameters from permittivity values is devised. The method is validated with measurements of the scattering parameters in a waveguide. The method is tested with composites based on biochar derived from sewage sludge and a standard epoxy sample. The addition of biochar considerably reduces transmission scattering and is found to be a suitable candidate for filling composite materials.
2022
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2980366