Disposable Electrochemical Sensor Using Graphene Oxide–Chitosan Modified Carbon-Based Electrodes for the Detection of Tyrosine

Dervin, Saoirse; Ganguly, Priyanka; Dahiya, Ravinder

doi:10.1109/jsen.2021.3073287

Cited by 39 publications

(26 citation statements)

References 58 publications

(70 reference statements)

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“…The wider need for humidity measurement calls for cost-effective indoor/outdoor sensors and as a result various types of mechanisms (e.g., capacitive, resistive, thermal etc.) and materials have been explored [7][8][9]. However, complex synthesis of nanomaterials, costly fabrication of electrodes and non-flexible form factors pose challenges for their widespread use [10][11][12][13][14] .…”

Section: Introductionmentioning

confidence: 99%

PEDOT:PSS modified Screen Printed Graphene-Carbon Ink based Flexible Humidity Sensor

Beniwal

Ganguly

Neethipathi

et al. 2022

2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)

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In this work, we present a screen-printed humidity sensor fabricated on a flexible polyvinyl chloride (PVC) substrate. A comparative analysis has been carried out for printed graphene-carbon electrode with and without Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) modification in the humidity sensing range of 25 -90 %RH. The sensor modified with PEDOT:PSS demonstrated enhanced performance ( ~ 1 %/%RH versus ~ 0.8 %/%RH of unmodified sensor). Further, the enhancement in the performance of the modified sensor was found to be prominent in the low to moderate humidity range (≤60 %RH). The repeatability, response and recovery time were also analysed for both types of sensors and their applicability has been demonstrated for neonatal care by monitoring the humidity level of a wet baby diapers. This demonstration shows the potential application of presented humidity sensors in areas such as environmental monitoring, healthcare, industrial, and agriculture.

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Section: Introductionmentioning

confidence: 99%

PEDOT:PSS modified Screen Printed Graphene-Carbon Ink based Flexible Humidity Sensor

Beniwal

Ganguly

Neethipathi

et al. 2022

2022 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)

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“…The boost in repair and reuse papers, which has been seen recently, is probably due to new policies which promote repair or reuse. Nevertheless, the increasing number of papers on fully biodegradable electronics is a good sign as such solutions are expected to be relevant in the long-term [43][44][45].…”

Section: B Weee Statistics and Highlightsmentioning

confidence: 99%

Electronic Waste Reduction Through Devices and Printed Circuit Boards Designed for Circularity

Chakraborty

Kettle

Dahiya

2022

IEEE Flex. Electron.

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The development of Printed Circuit boards (PCBs) has so far followed a traditional linear economy value chain, leading to high volumes of waste production and loss of value at the end-of-life. Consequentially, the electronics industry requires a transition to more sustainable practices. This review article presents an overview of the potential solutions and new opportunities that may arise from the greater use of emerging sustainable materials and resource-efficient manufacturing. A brief contextual summary about how the international management of Waste PCBs (WPCBs) and legalization have evolved over the past 20 years is presented along with a review of the existing materials used in PCBs. The environmental and human health assessment of these materials relative to their usage with PCBs is also explained. This enables the identification of which eco-friendly materials and new technologies will be needed to improve the sustainability of the industry. Following this, a comprehensive analysis of existing WPCB processing is presented. Finally, a detailed review of potential solutions is provided, which has been partitioned by the use of emerging sustainable materials and resource-efficient manufacturing. It is hoped that this discussion will transform existing manufacturing facilities and inform policies, which currently focus on waste management towards waste reduction and zero waste.

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“…However, the above solid electrodes may suffer cross-contamination, surface poisoning or time-consuming surface cleaning, which are not suitable for single-use disposable systems [16]. Disposable screen-printed carbon electrodes (SPCEs) which are regarded as low cost, have easy miniaturization and great potential for mass production, are more favorable in POC [17,18].…”

Section: Introductionmentioning

confidence: 99%

Disposable Electrochemical Aptasensor Based on Graphene Oxide-DNA Complex as Signal Amplifier towards Ultrasensitive Detection of Ochratoxin A

Xie

et al. 2022

Micromachines

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Signal amplification is crucial in developing a reliable disposable screen-printed carbon electrodes (SPCEs)-based biosensor for analyte detection with a narrow detection window. This work demonstrated a novel label-free electrochemical aptasensor based on SPCEs for the ultrasensitive detection of ochratoxin A (OTA). The graphene oxide-DNA (GO-DNA) complex as a signal amplifier with easy preparation was investigated for the first time. The proposed aptasensor based on the SPCEs/GO/cDNA-aptamer/3D-rGO-AuNPs structure was formed through the hybridization of aptamer-linked 3D-rGO/AuNPs and its complementary DNA-linked GO (GO-cDNA). The presence of OTA was discerned by its specific aptamer forming a curled OTA-aptamer complex and releasing the GO-cDNA from the surface of SPCEs. The resulting OTA-aptamer complex hindered interfacial electron transfer on the sensing surface, leading to the decreased peak current. The GO-cDNA further amplified the peak current change. This electrochemical aptasensor showed a low limit of detection of 5 fg/mL as well as good reproducibility with the relative standard deviation (RSD) of 4.38%. Moreover, the detection result of OTA in the rice and oat samples was comparable with that of the enzyme-linked immunosorbent assay (ELISA) kit. In general, the OTA aptasensor used in this work with convenient preparation, low-cost, good selectivity, high sensitivity and acceptable reproducibility can be proposed as a reliable point-of-care (POC) technique for OTA determination.

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Disposable Electrochemical Sensor Using Graphene Oxide–Chitosan Modified Carbon-Based Electrodes for the Detection of Tyrosine

Cited by 39 publications

References 58 publications

PEDOT:PSS modified Screen Printed Graphene-Carbon Ink based Flexible Humidity Sensor

PEDOT:PSS modified Screen Printed Graphene-Carbon Ink based Flexible Humidity Sensor

Electronic Waste Reduction Through Devices and Printed Circuit Boards Designed for Circularity

Disposable Electrochemical Aptasensor Based on Graphene Oxide-DNA Complex as Signal Amplifier towards Ultrasensitive Detection of Ochratoxin A

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