Flexible microwave sensors for real-time analysis of water contaminants

Korostynska, O.; Mason, Alex; Al-Shamma’a, Ahmed

doi:10.1080/09205071.2013.832393

Cited by 41 publications

(27 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Any change in the molecular structure affects its permittivity properties and is reflected in the microwave spectrum obtained due to the interaction of waves to the material [2,6,7,9]. Permittivity is simply a measurement of the response of a dielectric medium to the applied microwaves in the form of change in its electric field.…”

Section: Microwave Theory and Applicationsmentioning

confidence: 99%

“…Microwave based sensing is a relatively new and rapidly developing technology [1,2]. It offers a great potential as a developing technology due to its accuracy, low cost of measurements both in static and continuous measurements as well as its capability to analyse samples in small sizes [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…It is an efficient technique and largely used for the characterisation of materials because it can easily propagate through low-loss substances such as plastics, glass, ceramic, etc. [1,2,5,6]. It is a relatively straight forward technique and the instrumentation for measurements can be setup in minutes with the availability of measurement results in seconds providing real-time data [6,7].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Feasibility study on using microwave sensing technique to analyse silver-based products

Ateeq

Shaw

Garrett³

et al. 2016

Journal of Electromagnetic Waves and Applications

View full text Add to dashboard Cite

This paper reports on the feasibility of using a novel and robust microwave sensing technology to detect and analyse various Silver based products such as Silver Nitrate and Silver Oxide. The focus of the investigation is to differentiate between the two products, identify the contamination and change in the sample size. A microwave sensor designed previously in house has been utilised to carry out this initial study to analyse the capability of microwave sensing technique to carry out the analysis. The change in the microwave spectra are used as an indicator of the difference in the silver products and any contamination they may have. The results and their detailed repeatability confirm the viability of using microwave sensing technique as a potential method to analyse various silver products. The curves obtained from the material response to microwaves are distinguishable and can be related to the materials' properties. The study suggests a design and development of a bespoke unit as a dedicated analysis tool and to address any anomalies arising from the current feasibility.This will have a huge industrial benefit in terms of cost reduction and time associated with the industrial analysis.

show abstract

Section: Microwave Theory and Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Feasibility study on using microwave sensing technique to analyse silver-based products

Ateeq

Shaw

Garrett³

et al. 2016

Journal of Electromagnetic Waves and Applications

View full text Add to dashboard Cite

show abstract

“…By considering how reflected microwave signals vary at discrete frequency intervals, the changes in the signal can be linked to the amount and type of sample being tested. Research (Korostynska et al 2013b has confirmed the potential of a novel microwave sensor for water analysis, observing changes in the microwave part of the electromagnetic spectrum depending on the materials being analysed. Such work has laid the foundations for new methods, based on EM sensors, for qualitatively and quantitatively determining metal concentrations in mining areas.…”

Section: Introductionmentioning

confidence: 88%

Comparison of Electromagnetic Wave Sensors with Optical and Low-frequency Spectroscopy Methods for Real-time Monitoring of Lead Concentrations in Mine Water

et al. 2018

Self Cite

View full text Add to dashboard Cite

The feasibility of using novel electromagnetic wave sensors for real-time monitoring of metal pollution in water was assessed. Five solutions with different concentrations of lead (0, 1, 10, 50, 100 mg/L) were measured using several sensing methods: UV-Vis spectroscopy, low frequency capacitance and resistance measurements, and two sensing systems based on microwave technology. With this last approach, two sensing devices were used: a resonant cavity and a planar sensor with gold interdigitated electrode design printed on a PTFE substrate with a protective PCB lacquer coating. Results confirmed the ability of these systems to quantify the lead concentration as changes in spectrum signal at specific frequencies of the electromagnetic spectrum. Spectra were unique, with clearly observed shifts in the resonant frequencies of the sensors when placed in direct contact with different lead solutions, demonstrating the possibility of continuous monitoring with great sensitivity, selectivity, and high spatial and temporal resolution. Consequently, determination of trace and toxic metals using microwave spectroscopy is a promising alternative to traditional grab-sampling and laboratory based analyses. On-line and continuous monitoring of real-time metal concentrations offers the potential for a more effective emergency response and the platform for better scientific understanding and remediation of contaminated mine drainage.

show abstract

“…It is an efficient technique because it can easily propagate through low-loss substances such as plastics, glass, ceramic, etc. [12][13][14][15]. The instrumentation for measurements can be setup in minutes and the measurements taken in seconds providing real-time data [16,17].…”

Section: Microwave Sensing Theory and Methodologymentioning

confidence: 99%

An innovative microwave cavity sensor for non-destructive characterisation of polymers

Ateeq

Shaw

Wang³

et al. 2016

Sensors and Actuators A: Physical

View full text Add to dashboard Cite

An innovative microwave cavity sensor for non-destructive characterisation of polymers http://researchonline.ljmu.ac.uk/id/eprint/4655/ Article LJMU has developed LJMU Research Online for users to access the research output of the University more effectively. AbstractThis paper investigates the feasibility of using an innovative microwave sensing technology to characterise and study various properties of polymer material such as difference between various polymer types, particle size and particle size distribution, contamination and pigmentation. A microwave sensor designed previously has been utilised to carry out this initial study to analyse the capability of microwave techniques to carry out the analysis. The curves obtained from material response to microwaves are distinguishable showing the shift to the lower frequency end with the insertion of polymer material. S11 measurements have shown distinctive peaks for each size and type of the sample tested. The results are quantifiable in terms of various polymer properties under consideration. In terms of S21 measurements, microwave sensor clearly distinguishes between coarse and fine polymer samples in terms of particle size. The effect of air voids in the sample and the particle size distribution has also been studied. The results are promising and justifies a thorough design and development of a dedicated microwave sensor unit for the characterisation of polymers. The sensor will have a significant industrial benefit in terms of costs associated with the industrial analysis, increase in the efficiency of manufacturing and production operation as well as material quality, control and validation.

show abstract

Flexible microwave sensors for real-time analysis of water contaminants

Cited by 41 publications

References 28 publications

Feasibility study on using microwave sensing technique to analyse silver-based products

Feasibility study on using microwave sensing technique to analyse silver-based products

Comparison of Electromagnetic Wave Sensors with Optical and Low-frequency Spectroscopy Methods for Real-time Monitoring of Lead Concentrations in Mine Water

An innovative microwave cavity sensor for non-destructive characterisation of polymers

Contact Info

Product

Resources

About