Highly-Sensitive Glucose Concentration Sensor Exploiting Inter-resonators Couplings

Juan, Carlos G.; Potelon, Benjamin; Quendo, Cédric; Bronchalo, E.; Navarro, José María Sabater

doi:10.23919/eumc.2019.8910847

Cited by 31 publications

(19 citation statements)

References 9 publications

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“…The use of a single SRR with a dielectric sample holder was studied for water-glucose [94] (Figure 5a) and blood plasma-glucose [31] solutions, pointing the challenges when multicomponent solutions are involved. A significant sensitivity raise was reported for a novel technique based on two mutually coupled SRR [105] (Figure 5b). Another work proposed an openloop line resonator for water-glucose solutions [81].…”

Section: Quality Factor-based Sensorsmentioning

confidence: 94%

“…Among the different possibilities for classification, in a wide application context, the working principle was proposed as the most convenient criterion [48], especially to ease the comparison. This classification yields five kinds of sensors: frequency-variation sensors (e.g., [94,101,102]), phase-variation sensors (e.g., [88,103]), frequency-splitting sensors (e.g., [104,105]), coupling-modulation sensors (e.g., [106][107][108]) and differential-mode sensors (e.g., [90,109,110]). This classification scheme, however, while interesting for a broad application view, might not be the most suitable one for the specific case of glucose sensing.…”

Section: Proposal Of Classificationmentioning

confidence: 99%

“…Two SRR for differential mode measurements, based on the splitter/combiner microstrip structure [104], were proposed in [92] for aqueous microfluidic measurement of physiological concentrations. An approach based on inter-resonator coupling of two mutually coupled SRR was studied for water-glucose solutions measurement [105]. Proposals combining larger amounts of SRR have shown promising results able to address physiological concentrations in aqueous solutions [120].…”

Section: Insertion/return Loss-based Sensorsmentioning

confidence: 99%

“…The use of the quality factor in resonant sensors for measurements of variations in the dielectric properties of the MUT was proposed and studied some years ago, especially for lossy solutions [81,107,142]. However, it was not until recent years that this approach started to be exploited for glucose concentration measurement with planar sensors [31,94,105,143]. Indeed, the measured loaded quality factor (Q L ) is defined as…”

Section: Quality Factor-based Sensorsmentioning

confidence: 99%

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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: Quality Factor-based Sensorsmentioning

confidence: 94%

Section: Proposal Of Classificationmentioning

confidence: 99%

Section: Insertion/return Loss-based Sensorsmentioning

confidence: 99%

Section: Quality Factor-based Sensorsmentioning

confidence: 99%

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

et al. 2021

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“…However, more improvement is necessary to remove the error induced by physiological differences between individuals and different pressure of volunteers' tongue over the EM sensor. The sensitivity of the EM sensor was further enhanced by design of two electrically coupled open-loop microstrip resonators [187].…”

Section: Millimeter Wave/microwave/ultra-high Frequency Wave Sensingmentioning

confidence: 99%

Review of Non-Invasive Glucose Sensing Techniques: Optical, Electrical and Breath Acetone

Shokrekhodaei

Quinones

2020

Sensors

145

109

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Annual deaths in the U.S. attributed to diabetes are expected to increase from 280,210 in 2015 to 385,840 in 2030. The increase in the number of people affected by diabetes has made it one of the major public health challenges around the world. Better management of diabetes has the potential to decrease yearly medical costs and deaths associated with the disease. Non-invasive methods are in high demand to take the place of the traditional finger prick method as they can facilitate continuous glucose monitoring. Research groups have been trying for decades to develop functional commercial non-invasive glucose measurement devices. The challenges associated with non-invasive glucose monitoring are the many factors that contribute to inaccurate readings. We identify and address the experimental and physiological challenges and provide recommendations to pave the way for a systematic pathway to a solution. We have reviewed and categorized non-invasive glucose measurement methods based on: (1) the intrinsic properties of glucose, (2) blood/tissue properties and (3) breath acetone analysis. This approach highlights potential critical commonalities among the challenges that act as barriers to future progress. The focus here is on the pertinent physiological aspects, remaining challenges, recent advancements and the sensors that have reached acceptable clinical accuracy.

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Frequency‐Splitting Sensors

2022

Planar Microwave Sensors

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Highly-Sensitive Glucose Concentration Sensor Exploiting Inter-resonators Couplings

Cited by 31 publications

References 9 publications

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

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

Review of Non-Invasive Glucose Sensing Techniques: Optical, Electrical and Breath Acetone

Frequency‐Splitting Sensors

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