Results 11 to 20 of about 5,524 (234)
Sensors, 2020 In this paper, an extremely sensitive microwave sensor is designed based on a complementary symmetric S shaped resonator (CSSSR) to evaluate dielectric characteristics of low-permittivity material.
Tanveerul Haq +5 more
doaj +3 more sources
Biosensors and Bioelectronics: X, 2022 This paper aims to monitor human fever using wearable sensors as a non-invasive and real-time method. Our purpose is based on the use of textile sensors that can be integrated with the person’s clothes.
Sina Rahmani Charvadeh, Javad Ghalibafan
doaj +1 more source
Micromachines, 2023 Substrate-integrated waveguides (SIWs) are widely used in microwave systems owing to their low cost and ease of integration. In this study, an SIW-based resonator that reacts to the complex permittivity variation of solutions with dimensions of 79.2 mm ×
Chun-He Quan +2 more
doaj +1 more source
Sensors, 2022 A shortage of research on the impact of atmospheric parameters on the measured dielectric permittivity values of rigid polyurethane (PU) foams was identified.
Ilze Beverte +3 more
doaj +1 more source
Measurement of Electrical Discharge Machining Oil Quality by Analyzing Variations in the Equivalent Relative Permittivity of the Capacitive Sensor [PDF]
Sensors, 2020 In this study, a concentration monitoring system was successfully developed. A sensor was immersed in electrical discharge machining oil, and the capacitance of the sensor changed as a function of the impurity concentration. Thus, DC voltage variations were produced via a conversion circuit. Carbon black and iron particles with different concentrations
Shih-Jui Chen +6 more
openaire +3 more sources
Frontiers in Robotics and AI, 2021 Developing highly sensitive flexible pressure sensors has become crucially urgent due to the increased societal demand for wearable electronic devices capable of monitoring various human motions.
Zhaoqing Kang +5 more
doaj +1 more source
A New Planar Microwave Sensor for Building Materials Complex Permittivity Characterization
Sensors, 2020 A new microwave sensor is proposed to characterize the complex relative permittivity of building non-magnetic materials and used in the characterization of three concrete samples.
João G. D. Oliveira +4 more
doaj +1 more source
Relative Permittivity Measurement of Microliter Volume Liquid Samples through Microwave Filters
Sensors, 2023 This paper proposes a concept of dielectric characterization of low-volume liquid samples using the coupling coefficient of filters. The concept is validated through a two-pole substrate integrated waveguide filter in which the liquid under test is ...
Azhar Yasin +5 more
doaj +1 more source
Scientific Reports, 2022 In this paper, an Asymmetric Electric Split-Ring Resonator (AESRR) metamaterial structure is proposed to explore the interaction between metamaterials and electromagnetic waves with the influence of Fano resonance on electromagnetic properties.
Yunhao Cao +3 more
doaj +1 more source
Calculation of soil water content using dielectric-permittivity-based sensors – benefits of soil-specific calibration [PDF]
Geoscientific Instrumentation, Methods and Data Systems, 2023 Soil water content (SWC) sensors are widely used for scientific studies or for the management of agricultural practices. The most common sensing techniques provide an estimate of volumetric soil water content based on sensing of dielectric permittivity ...
B. M. Zawilski +5 more
doaj +1 more source