Results 21 to 30 of about 10,181 (286)

Asymmetric coplanar strip based stepped monopole sensor for liquid permittivity measurements

open access: yesEngineering Science and Technology, an International Journal, 2022
Investigation of dielectric properties of materials has significant applications in the current scenario. A high sensitive microwave submersible sensor for measuring complex permittivity of liquids over a broad range is presented in this paper.
Remsha Moolat   +2 more
doaj   +1 more source

A Portable Microwave Interferometry Sensor for Permittivity Detection Based on CCMRC [PDF]

open access: yesIEEE Access, 2020
A portable microwave complex permittivity sensor based on the interferometry configuration is proposed. A complementary compact microstrip resonant cell (CCMRC) is applied as the sensitive element, which converts the dielectric information of the material under test (MUT) into the phase variations of its transmission coefficient.
Shichang Chen   +6 more
openaire   +2 more sources

The Role of Probe Attenuation in the Time-Domain Reflectometry Characterization of Dielectrics [PDF]

open access: yes, 2010
The influence of the measurement setup on the estimation of dielectric permittivity spectra from time-domain reflectometry (TDR) responses is investigated.
Ferraris, S.   +6 more
core   +1 more source

A novel dual modality sensor with sensitivities to permittivity and conductivity

open access: yes2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2017
In this paper, an electromagnetic (EM) sensor which can operate simultaneously in capacitive and inductive modalities is developed, and a novel measurement strategy is proposed accordingly. The sensor is composed of two planar spiral coils with large track width, which promotes its capacitive mode.
Jorge R. Salas Avila   +2 more
openaire   +2 more sources

On the Accuracy of Factory-Calibrated Low-Cost Soil Water Content Sensors

open access: yesSensors, 2019
Soil water content (SWC) monitoring is often used to optimize agricultural irrigation. Commonly, capacitance sensors are used for this task. However, the factory calibrations have been often criticized for their limited accuracy. The aim of this paper is
Jesús María Domínguez-Niño   +4 more
doaj   +1 more source

Research on a high-sensitivity asymmetric metamaterial structure and its application as microwave sensor

open access: yesScientific 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

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.
Sheima, Yauhen   +6 more
openaire   +2 more sources

Complementary Metamaterial Sensor for Nondestructive Evaluation of Dielectric Substrates

open access: yesSensors, 2019
In this paper, complementary metamaterial sensor is designed for nondestructive evaluation of dielectric substrates. The design concept is based on electromagnetic stored energy in the complementary circular spiral resonator (CCSR), which is concentrated
Tanveer ul Haq   +3 more
doaj   +1 more source

Permittivity Extraction of Glucose Solutions Through Artificial Neural Networks and Non-invasive Microwave Glucose Sensing [PDF]

open access: yes, 2018
An accurate low-cost method is presented for measuring the complex permittivity of glucose/water solutions. Moreover, a compact non-invasive RF/microwave sensor is presented for glucose sensing with the reasoning behind design parameters as well as ...
Kale, I., Turgul, V.
core   +1 more source

Ultrasmall barium titanate nanoparticles modulated stretchable dielectric elastomer sensors with large deformability and high sensitivity

open access: yesInfoMat, 2023
Large deformability and high sensitivity is difficult to be realized simultaneously in flexible sensors. Herein, taking advantage of the high permittivity and highly active surfaces of the ultrasmall barium titanate nanoparticles (BT NPs) and the high ...
Zun‐Peng Feng   +8 more
doaj   +1 more source

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