Results 1 to 10 of about 35,150 (277)

A Flow-Through Microfluidic Relative Permittivity Sensor. [PDF]

Micromachines (Basel), 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.
Zeng Y, Sanders R, Wiegerink R, Lötters J.   +3 more
europepmc   +9 more sources

Modeling and Relative Permittivity Modulation of Cu/PDMS Capacitive Flexible Sensor for Pressure Sensing. [PDF]

Sensors (Basel)
This study aims to establish an equivalent parallel capacitance model for a copper/polydimethylsiloxane (Cu/PDMS) capacitive flexible pressure sensor and modulate its relative permittivity to optimize pressure sensing performance.
Wang X, Zhang Y, Zhang T, Fu G, Zhu Y, Liu Y.   +5 more
europepmc   +5 more sources

Meander-Line Slot-Loaded High-Sensitivity Microstrip Patch Sensor Antenna for Relative Permittivity Measurement [PDF]

Sensors, 2019
A high-sensitivity microstrip patch sensor antenna (MPSA) loaded with a meander-line slot (MLS) is proposed for the measurement of relative permittivity. The proposed MPSA was designed by etching the MLS along the radiating edge of the patch antenna, and
Junho Yeo, Jong-Ig Lee
doaj   +6 more sources

Comparison of the Moist Material Relative Permittivity Readouts Using the Non-Invasive Reflectometric Sensors and Microwave Antenna [PDF]

Sensors, 2022
The article concerns the issue of non-invasive moisture sensing in building materials. Two techniques that enable evaluating the value of the relative permittivity of the material, being the measure of porous material moisture, have been utilized for the
Zbigniew Suchorab, Krzysztof Tabiś, Przemysław Brzyski, Zenon Szczepaniak, Tomasz Rogala, Waldemar Susek, Grzegorz Łagód   +6 more
doaj   +4 more sources

Tapered CSRR-Based Sensor for Relative Permittivity Measurement With Application to Biomedical Microfluidic Sensing

IEEE Access
This paper proposes miniaturized, lightweight and ultrasensitive planar metamaterial sensor for relative permittivity measurement of nondispersive materials.
Salem A. Alotaibi, Yepu Cui, Manos M. Tentzeris   +2 more
doaj   +3 more sources

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.
Shih-Jui Chen, Yi-Li Chen, Yu-Jui Chang, Dong-Lin Chuang, Yi-Chun Chen, Hai-Ping Tsui, Yean-Ren Hwang   +6 more
doaj   +6 more sources

The Effect of Flotation Reagents Addition (MIBC and PAX) on the Relative Permittivity Value Using 2-Electrode Capacitance Sensor

Procedia Engineering, 2017
Abstract In general, frother and collector are used as reagents to obtain an optimum condition in flotation processes. In this study, the effect of methyl isobutyl carbinol (MIBC) frother and potassium amyl xanthate (PAX) collector on the relative permittivity value using 2-electrode capacitance sensor was conducted. The objective of this study is to
Harisma Nugraha, Didied Haryono, Warsito P. Taruno, Mahfudz Al Huda, Sri Harjanto   +4 more
openaire   +3 more sources

Flow-through microfluidic relative permittivity sensor using highly-doped silicon sidewall electrodes

Journal of Micromechanics and Microengineering
Abstract This paper reports a flow-through sensor for the real-time measurement of the relative permittivity of a flowing fluid. The proposed sensor contains multiple parallel microchannels. Each channel acts as a parallel plate capacitor in which the electrodes are isolated from the fluid.
M J S Bonnema, H-W Veltkamp, D Alveringh, R J Wiegerink, J C Lötters   +4 more
openaire   +2 more sources

Gelatin-Coated High-Sensitivity Microwave Sensor for Humidity-Sensing Applications. [PDF]

Sensors (Basel)
In this paper, the humidity-sensing characteristics of gelatin were compared with those of poly(vinyl alcohol) (PVA) at L-band (1 ~ 2 GHz) microwave frequencies.
Yeo J, Kwon Y.
europepmc   +2 more sources

Estimation of Relative Permittivity and Thickness for Dielectric Materials Using an Open-Ended Waveguide Sensor

, 2016
The main goal of this thesis has been to conduct a feasibility study on an open-ended waveguide sensor as a tool for estimating the relative permittivity and thickness of dielectric layers in the thickness range 0.5-5 cm. To achieve this purpose, a reflection coefficient measurement technique was implemented.
Bahareh Nikparvar
openaire   +2 more sources