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Microwave Sensors and Their Applications in Permittivity Measurement

open access: yesSensors
This paper reviews microwave sensors and their applications in permittivity measurement. The detection, diagnosis, classification, and monitoring without contact and invasion have been the subject of numerous studies based on permittivity characteristics
Changjun Liu   +5 more
doaj   +5 more sources

A Flow-Through Microfluidic Relative Permittivity Sensor [PDF]

open access: yesMicromachines, 2020
In this paper, we present the design, simulation, fabrication and characterization of a microfluidic relative permittivity sensor in which the fluid flows through an interdigitated electrode structure.
Yaxiang Zeng   +3 more
doaj   +4 more sources

A Discussion on Sensitivity Optimization in Reflective-Mode Phase-Variation Permittivity Sensors Based on Semi-Lumped Resonators [PDF]

open access: yesSensors
Typically, the operating frequency in single-frequency reflective-mode phase-variation permittivity sensors based on semi-lumped resonators (e.g., step-impedance resonators—SIRs) is set to the resonance frequency of the sensing resonator when it is ...
Lijuan Su   +5 more
doaj   +2 more sources

A New Chipless RFID Permittivity Sensor System [PDF]

open access: yesIEEE Access, 2021
Permittivity sensing is commonly utilized in multiple fields for various applications. In this study, an enhanced RFID (Radio Frequency Identification) permittivity sensor system is designed. Additionally, we investigated the signal processing procedures
Yang Wang   +4 more
doaj   +2 more sources

Review of Recent Microwave Planar Resonator-Based Sensors: Techniques of Complex Permittivity Extraction, Applications, Open Challenges and Future Research Directions

open access: yesSensors, 2021
Recent developments in the field of microwave planar sensors have led to a renewed interest in industrial, chemical, biological and medical applications that are capable of performing real-time and non-invasive measurement of material properties.
Rammah Ali Alahnomi   +6 more
doaj   +3 more sources

Transient Elastomers with High Dielectric Permittivity for Actuators, Sensors, and Beyond

open access: yesACS Applied Materials & Interfaces, 2022
Dielectric elastomers (DEs) are key materials in actuators, sensors, energy harvesters, and stretchable electronics. These devices find applications in important emerging fields such as personalized medicine, renewable energy, and soft robotics.
Yauhen Sheima   +2 more
exaly   +3 more sources

Using simple soil water content sensors to measure water availability in fresh concrete [PDF]

open access: yesMATEC Web of Conferences, 2022
Preventing plastic shrinkage cracks improves the durability of concrete. This is because plastic shrinkage cracks serve as pathways by which corroding agents can penetrate concrete.
Smit Martha S.   +2 more
doaj   +1 more source

Calibration of capacitive soil moisture sensor based on random forest

open access: yes地质科技通报, 2023
Objective Soil moisture information crucial for various applications, such as natural ecological restoration, farmland irrigation management, and soil engineering construction.
Zheng Wang   +6 more
doaj   +1 more source

Resonant coaxial SMA microwave permittivity sensor [PDF]

open access: yesJournal of Electrical Engineering, 2020
Abstract Resonant coaxial SMA microwave permittivity sensor is introduced. It is constructed using only commercially available SMA connectors. The sensor is tested in two different frequency ranges for two different dielectric constant ranges, from 1 to 10 and from 10 to 80.
Nešić, Dušan, Milošević, Tomislav
openaire   +2 more sources

Calculation of soil water content using dielectric-permittivity-based sensors – benefits of soil-specific calibration [PDF]

open access: yesGeoscientific 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

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