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Low-Cost Oil Quality Sensor Based on Changes in Complex Permittivity
Sensors, 2011 Real time oil quality monitoring techniques help to protect important industry assets, minimize downtime and reduce maintenance costs. The measurement of a lubricant’s complex permittivity is an effective indicator of the oil degradation process and it ...
Mark Hadfield, Angel Torres Pérez
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Sensors, 2019 In this paper, a cylindrical cavity sensor based on microwave resonant theory is proposed to distinguish between various driveability index gasolines under temperature variations. The working principle of the proposed sensor is based on the fact that the
Chong Hyun Lee +2 more
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Non-resonant Permittivity Measurement Methods [PDF]
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2017 La medición de las propiedades dieléctricas de los materiales se ha aplicado en pruebas no destructivas, medición de humedad, análisis de suelos e incluso detección de cáncer. Los métodos se han desarrollado durante más de 70 años en base a la interacción de las ondas electromagnéticas con el material bajo prueba.
S. L. S. Severo +3 more
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Sensors, 2023 In this paper, an oblique aperture ridge waveguide operating at 2450 MHz is proposed, and, using the ridge waveguide, a permittivity measurement system is constructed which can measure the permittivity of materials during microwave heating.
Mingyi Gou +4 more
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Intercalation Effects on the Dielectric Properties of PVDF/Ti3C2Tx MXene Nanocomposites
Nanomaterials, 2023 In this study, we report the effect of intercalation of dimethyl sulfoxide (DMSO) and urea molecules into the interlayer space of Ti3C2Tx MXene on the dielectric properties of poly(vinylidene fluoride) (PVDF)/MXene polymer nanocomposites.
Alexey Tsyganov +5 more
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Broadband Measurements of Soil Complex Permittivity
Sensors, 2023 Agriculture is a major consumer of freshwater and is often associated with low water productivity. To prevent drought, farmers tend to over-irrigate, putting a strain on the ever-depleting groundwater resources. To improve modern agricultural techniques and conserve water, quick and accurate estimates of soil water content (SWC) should be made, and ...
Justin Stellini +7 more
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Non-Invasive Heart Beat Measurement Using Microwave Resonators
Proceedings, 2018 In this paper we present the first results of our research regarding microwave biosensors for non-invasive permittivity monitoring of the human body. To detect permittivity changes, resonators are used, which alter their resonance frequency and their ...
Felix Essingholt +5 more
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Physics of Complex SystemsElectrical conductivity, real part of dielectric permittivity and dielectric losses of a novel nanocomposite material obtained by the infiltration of a NaA zeolite matrix with Rochelle salt were studied in the frequency range from 100 Hz to 100 kHz.
Тамара Геннадьевна Матвеева +3 more
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The Effect on Wireless Sensor Communication When Deployed in Biomass
Sensors, 2011 Wireless sensor networks (WSN) have been studied in a variety of scenarios over recent years, but work has almost exclusively been done using air as the transmission media.
Thomas Skjødeberg Toftegaard +3 more
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EarthLandslides are widespread and global geological disasters, affecting millions of people and causing numerous deaths each year. Despite technological advances, it is still difficult to accurately prevent landslides.
Diego Veloz-Cherrez +3 more
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