Results 11 to 20 of about 16,490 (163)
Remote Sensing, 2021 Estimating the permittivity of heterogeneous mixtures based on the permittivity of their components is of high importance with many applications in ground penetrating radar (GPR) and in electrodynamics-based sensing in general.
Hossain Zadhoush +2 more
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An Analysis of Open-Ended Coaxial Probe Sensitivity to Heterogeneous Media
Sensors, 2020 Open-ended coaxial probe spectroscopy is commonly used to determine the dielectric permittivity of biological tissues. However, heterogeneities in the probe sensing region can limit measurement precision and reproducibility.
Christopher L. Brace, Sevde Etoz
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Sensors, 2020 Medical devices making use of radio frequency (RF) and microwave (MW) fields have been studied as alternatives to existing diagnostic and therapeutic modalities since they offer several advantages.
Julian Bonello +4 more
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Complex Permittivity Characterization of Liquid Samples Based on a Split Ring Resonator (SRR)
Sensors, 2021 A complex permittivity characterization method for liquid samples has been proposed. The measurement is carried out based on a self-designed microwave sensor with a split ring resonator (SRR), the unload resonant frequency of which is 5.05 GHz.
Jialu Ma +5 more
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An Open-Resonator Sensor for Measuring the Dielectric Properties of Antarctic Ice
Sensors, 2019 In this paper, the theory behind the design of a microwave sensor for the accurate measurement of firn complex permittivity is presented. This class of microwave sensors, based on the open-coaxial re-entrant cavity method, is specifically designed to ...
Roberto Olmi +3 more
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Electromagnetic Technique for Hydrocarbon and Sand Transport Monitoring: Proof of Concept
IEEE Access, 2020 Electromagnetic metering offers significant promise in the measurement of low-conductivity medium like in multiphase flow. Such measurements rely on the measurement of conductivity contrasts formed by two medium of substances, one substance being ...
Yessica Arellano, Andy Hunt, Lu Ma
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Low Power Contactless Bioimpedance Sensor for Monitoring Breathing Activity
Sensors, 2021 An electronic circuit for contactless detection of impedance changes in a tissue is presented. It operates on the principle of resonant frequency change of the resonator having the observed tissue as a dielectric.
Marko Pavlin, Franc Novak, Gregor Papa
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Permittivity measurement of minerals
Journal of Physics: Conference Series, 2013 An electromagnetic logging tool moves along a borehole to measure continuously the complex dielectric permittivity of the rock formation. Dielectric properties of formation fluids and minerals are required to interpret the log. Methods to measure mineral permittivities are reviewed and experimental results are described for various particulate minerals.
V J Anderson, A Clarke, G H Meeten
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Nanophotonics, 2018 We propose a deterministic method to measure the optical permittivity of two-dimensional (2D) materials without a priori knowledge of the electronic transitions over the spectral window of interest.
Jung Gwang-Hun, Yoo SeokJae, Park Q-Han
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Complex Relative Permittivity Measurement Techniques [PDF]
Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, 2019 This article presents a review of the techniques for measuring complex relative permittivity and also explains basic properties for understanding the principle of complex relative permittivity measurement.
Nawarat Piladaeng
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