Multiple-Cell Microfluidic Dielectric Resonator for Liquid Sensing Applications

Omer, Ala Eldin; Shaker, George; Safavi‐Naeini, Safieddin; Ngo, Kieu; Shubair, Raed M.; Alquié, G.; Deshours, Frédérique; Kokabi, Hamid

doi:10.1109/jsen.2020.3041700

Cited by 60 publications

(26 citation statements)

References 41 publications

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“…A structure based on open SRR was tested for microfluidic measurement [123]. More complex approaches combining a larger number of SRR have reported interesting sensitivity raises [41]. In order to increase the line capacitance of the sensor, interdigital capacitor gaps have been considered in different configurations for water-glucose measurements [30,124,125].…”

Section: Resonant Frequency-based Sensorsmentioning

confidence: 99%

“…sensitivity raises [41]. In order to increase the line capacitance of the sensor, interdigital capacitor gaps have been considered in different configurations for water-glucose measurements [30,124,125].…”

Section: Resonant Frequency-based Sensorsmentioning

confidence: 99%

“…While sensitivity can be enhanced by active circuitry techniques [33][34][35][36], selectivity seems only to be addressable by acquisition of redundant information by means of multi-sensor or multi-parameter measurements [28,31,[37][38][39]. The advancements in machine-learning techniques cast growing optimism on these multi-parameter fusion approaches [40][41][42][43], which could lead to considerable gains of selectivity and robustness [38,[44][45][46]. In this framework, looking at the literature, one can find up-to-date reviews of planar microwave sensors for general dielectric permittivity measurements [47][48][49], electromagnetic sensors for general biomedical [50,51] or industry [52] applications, and multitechnology sensors for glucose sensing in both health and industry contexts [28,29,[53][54][55][56][57][58], but not a specialized review of planar microwave resonant glucose sensors.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microwave Planar Resonant Solutions for Glucose Concentration Sensing: A Systematic Review

et al. 2021

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The measurement of glucose concentration finds interesting potential applications in both industry and biomedical contexts. Among the proposed solutions, the use of microwave planar resonant sensors has led to remarkable scientific activity during the last years. These sensors rely on the changes in the dielectric properties of the medium due to variations in the glucose concentration. These devices show electrical responses dependent on the surrounding dielectric properties, and therefore the changes in their response can be related to variations in the glucose content. This work shows an up-to-date review of this sensing approach after more than one decade of research and development. The attempts involved are sorted by the sensing parameter, and the computation of a common relative sensitivity to glucose is proposed as general comparison tool. The manuscript also discusses the key points of each sensor category and the possible future lines and challenges of the sensing approach.

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Section: Resonant Frequency-based Sensorsmentioning

confidence: 99%

Section: Resonant Frequency-based Sensorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microwave Planar Resonant Solutions for Glucose Concentration Sensing: A Systematic Review

et al. 2021

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“…These technologies have several disadvantages including: high cost, complexity and time-consuming process. To overcome these constraints, the microwave sensing technology is widely used for healthcare applications due to real-time measurement, quick response time, high sensitivity, and ease of handling [8] . This technology is based on detecting the changes in the dielectric properties of the material under test in the sensing area, this changes are perceived and explained by the sensing parameters (resonance frequency and/or amplitude) of a readout device [9].…”

Section: Introductionmentioning

confidence: 99%

Determination of Salinity and Sugar Concentration by Means of a Circular-Ring Monopole Textile Antenna-Based Sensor

et al. 2021

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This paper presents a monopole antenna-based sensor for measuring different amounts and concentrations of salt and sugar in water. The proposed antenna sensor consists of a textile monopole antenna with circular-ring and partial ground plane. It is implemented by means of embroidery on a felt textile substrate and it resonates at 2.4 GHz. The textile substrate can absorb liquids through the sensing area incorporated within the monopole antenna structure. Therefore, the substrate dielectric properties are changed according to the liquid properties of the absorbed solution. The proposed antenna sensor uses microwave signals to track different amount and concentrations of salt and sugar in terms of the magnitude of the return loss and resonance frequency shift. The measurements are recorded and compared before and after applying different solutions. The rinsing reliability of the proposed antenna sensor has been also studied. The proposed antenna sensor demonstrates a high sensitivity of 800 MHz/mL with a good correlation with the linear fit ( 2 R = 0.9737) and 550 MHz/mL with linear response ( 2 R = 0.9135) for 5% salt and sugar concentration solutions, respectively. To the best of our knowledge, this article demonstrates for the first time the capability of a fully-textile antenna sensor to detect different amounts and concentrations of salt and sugar using microwave signals.

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“…In this regard, metamaterial resonators offer higher sensitivity than other microwave sensors and they have been reportedly found to sense small variation in EM (electromagnetic) properties of the sample [12]. As a result, metamaterial-based sensors have been presented for dielectric characterisation of ethanol and methanol [13], assessment of dielectric substrates [14], blood glucose monitoring [15][16][17], measurement of material thickness [18], biomedical applications [19], detection of cancerous cells [20], and the evaluation of oils [21]. Metamaterials (MMs) are artificially engineered structures that exhibit negative permeability and permittivity simultaneously [22].…”

Section: Introductionmentioning

confidence: 99%

Millimetre-Wave Metamaterial-Based Sensor for Characterisation of Cooking Oils

Qureshi

Abidin

Ashyap

et al. 2021

International Journal of Antennas and Propagation

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The characterisation of the cooking oils presents a significant challenge due to minor changes in their dielectric behaviour. In this paper, a new metamaterial-based sensor incorporating a split-ring resonator (SRR) with a microstrip transmission line is presented to characterise cooking oils. The design demonstrates metamaterial characteristics of negative permittivity and permeability simultaneously at the resonance frequency. Furthermore, its operation in the range of millimetre-wave frequencies can further enhance its sensitivity, especially for liquid materials. The sensor’s novelty is the operation at millimetre-wave frequencies that offers a high shift in the transmission coefficient while operating at 30 GHz. The sensor’s performance analysis is undertaken by using six MUTs with dielectric constants ranging from 0.126 to 4.47. The presented structure designed on 12 × 8 mm2 Rogers substrate offers a sensitivity of 1.12 GHz per unit change in dielectric constant. The phase's shift demonstrates a lower percentage error than the amplitude and linearly moves towards higher frequencies with the increase in dielectric constant and tangent loss of MUT. The designed sensor can be prominently useful for detecting liquids' chemical characteristics in chemistry and medicine fields.

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Multiple-Cell Microfluidic Dielectric Resonator for Liquid Sensing Applications

Cited by 60 publications

References 41 publications

Microwave Planar Resonant Solutions for Glucose Concentration Sensing: A Systematic Review

Microwave Planar Resonant Solutions for Glucose Concentration Sensing: A Systematic Review

Determination of Salinity and Sugar Concentration by Means of a Circular-Ring Monopole Textile Antenna-Based Sensor

Millimetre-Wave Metamaterial-Based Sensor for Characterisation of Cooking Oils

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