A Screen Printed Phenanthroline-Based Flexible Electrochemical Sensor for Selective Detection of Toxic Heavy Metal Ions

Avuthu, Sai Guruva Reddy; Wabeke, Jared T.; Narakathu, Binu B.; Maddipatla, Dinesh; Arachchilage, Jaliya Samarakoon; Obare, Sherine O.; Atashbar, Massood Z.

doi:10.1109/jsen.2016.2572184

Cited by 49 publications

(8 citation statements)

References 41 publications

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“…Compared to paper, plastic substrates (e.g., polyester family, polyethylene naphthalene, polytetrafluoroethylene, and many others) have sufficient thermal stability, low coefficient of thermal expansion, and structural resiliency against deformation [125]. By using the widely reported flexible polyester with a thickness of 50 µm as a representative example [82,[168][169][170], a three-electrode amperometric lactate biosensor is fabricated along with a bipolar electrocardiogram sensor in a wearable hybrid sensing system (Figure 7a) [56]. The three amperometric electrodes are also separated from the Ag/AgCl electrocardiogram electrodes via a printed hydrophobic layer to increase sensor stability and signal-to-noise ratio.…”

Section: Plastic-based Biosensorsmentioning

confidence: 99%

Recent Developments of Flexible and Stretchable Electrochemical Biosensors

Yang

Cheng

2020

Micromachines

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The skyrocketing popularity of health monitoring has spurred increasing interest in wearable electrochemical biosensors. Compared with the traditionally rigid and bulky electrochemical biosensors, flexible and stretchable devices render a unique capability to conform to the complex, hierarchically textured surfaces of the human body. With a recognition element (e.g., enzymes, antibodies, nucleic acids, ions) to selectively react with the target analyte, wearable electrochemical biosensors can convert the types and concentrations of chemical changes in the body into electrical signals for easy readout. Initial exploration of wearable electrochemical biosensors integrates electrodes on textile and flexible thin-film substrate materials. A stretchable property is needed for the thin-film device to form an intimate contact with the textured skin surface and to deform with various natural skin motions. Thus, stretchable materials and structures have been exploited to ensure the effective function of a wearable electrochemical biosensor. In this mini-review, we summarize the recent development of flexible and stretchable electrochemical biosensors, including their principles, representative application scenarios (e.g., saliva, tear, sweat, and interstitial fluid), and materials and structures. While great strides have been made in the wearable electrochemical biosensors, challenges still exist, which represents a small fraction of opportunities for the future development of this burgeoning field.

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Section: Plastic-based Biosensorsmentioning

confidence: 99%

Recent Developments of Flexible and Stretchable Electrochemical Biosensors

Yang

Cheng

2020

Micromachines

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“…The average peak current’s shift was noticed at 50 μM of Hg +2 and Pb +2 . However, the system was not portable as it did not consist of a readout circuit [104].…”

Section: Microfluidic With Electrochemical Detectionmentioning

confidence: 99%

A Comprehensive Review of Microfluidic Water Quality Monitoring Sensors

Jaywant

Arif

2019

Sensors

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Water crisis is a global issue due to water contamination and extremely restricted sources of fresh water. Water contamination induces severe diseases which put human lives at risk. Hence, water quality monitoring has become a prime activity worldwide. The available monitoring procedures are inadequate as most of them require expensive instrumentation, longer processing time, tedious processes, and skilled lab technicians. Therefore, a portable, sensitive, and selective sensor with in situ and continuous water quality monitoring is the current necessity. In this context, microfluidics is the promising technology to fulfill this need due to its advantages such as faster reaction times, better process control, reduced waste generation, system compactness and parallelization, reduced cost, and disposability. This paper presents a review on the latest enhancements of microfluidic-based electrochemical and optical sensors for water quality monitoring and discusses the relative merits and shortcomings of the methods.

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“…These techniques are expensive, large sample volumes, extensive pre-sample preparations, lengthy analysis time. Some of the authors used an electrochemical sensor for HMIs detection such as Armas et al (2016), Adarakatti et al (2017), Jeromiyas et al (2019), Zhu et al (2015), Zhang et al (2010), Anambiga et al (2013), Mandoc et al (2017), Avuthu et al (2016) but having higher limit of detection (LOD) in µ M to nM ranges. The capacitive sensor for differential pressure measurement because of HMIs and enhancement in sensitivity by introducing different shapes, stress concentration regions, changing the dimension of the cantilever by Rotake and Darji (2018a).…”

Section: Introductionmentioning

confidence: 99%

Thin-film based sensor for the selective detection of mercury (Hg²⁺) ions at the picomolar range

Rotake

Darji

Singh

2020

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Purpose The purpose of this paper is a new thin-film based sensor proposed for sensitive and selective detection of mercury (Hg2+) ions in water. The thin-film platform is easy to use and quick for heavy metal ions (HMIs) detection in the picomolar range. Ion-selective self-assembled monolayer's (SAM) of thiol used for the detection of HMIs above the Au/Ti top surface. Design/methodology/approach A thin-film based platform is suitable for the on-field experiments and testing of water samples. HMIs (antigen) and thiol-based SAM (antibody) interaction results change in surface morphology and topography. In this study, the authors have used different characterization techniques to check the selectivity of the proposed method. This change in the morphology and topography of thin-film sensor checked with Fourier-transform infrared spectroscopy, surface-enhanced Raman scattering spectroscopy, atomic force microscopy and scanning electron microscopy with energy dispersive x-ray analysis used for high-resolution images. Findings This thin-film based platform is straightforward to use and suitable for real-time detection of HMIs at the picomolar range. This thin-film based sensor platform capable of achieving a lower limit of detection (LOD) 27.42 ng/mL (136.56 pM) using SAM of Homocysteine-Pyridinedicarboxylic acid to detect Hg2+ ions. Research limitations/implications A thin-film based technology is perfect for real-time testing and removal of HMIs, but the LOD is higher as compared to microcantilever-based devices. Originality/value The excessive use and commercialization of nanoparticle (NPs) are quickly expanding their toxic impact on health and the environment. The proposed method used the combination of thin-film and NPs, to overcome the limitation of NPs-based technique and have picomolar (136.56 pM) range of HMIs detection. The proposed thin-film-based sensor shows excellent repeatability and the method is highly reliable for toxic Hg2+ ions detection. The main advantage of the proposed thin-film sensor is its ability to selectively remove the Hg2+ ions from water samples just like a filter and a sensor for detection at picomolar range makes this method best among the other current-state of the art techniques.

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A Screen Printed Phenanthroline-Based Flexible Electrochemical Sensor for Selective Detection of Toxic Heavy Metal Ions

Cited by 49 publications

References 41 publications

Recent Developments of Flexible and Stretchable Electrochemical Biosensors

Recent Developments of Flexible and Stretchable Electrochemical Biosensors

A Comprehensive Review of Microfluidic Water Quality Monitoring Sensors

Thin-film based sensor for the selective detection of mercury (Hg²⁺) ions at the picomolar range

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A Screen Printed Phenanthroline-Based Flexible Electrochemical Sensor for Selective Detection of Toxic Heavy Metal Ions

Cited by 49 publications

References 41 publications

Recent Developments of Flexible and Stretchable Electrochemical Biosensors

Recent Developments of Flexible and Stretchable Electrochemical Biosensors

A Comprehensive Review of Microfluidic Water Quality Monitoring Sensors

Thin-film based sensor for the selective detection of mercury (Hg2+) ions at the picomolar range

Contact Info

Product

Resources

About

Thin-film based sensor for the selective detection of mercury (Hg²⁺) ions at the picomolar range