Fine line screen printed electrodes for polymer microfluidics

Sunappan, V.; Wang, Zhiping

doi:10.1109/eptc.2010.5702612

Cited by 8 publications

(6 citation statements)

References 3 publications

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“…It is therefore not suited to create nanoscale interdigitated arrays, e.g., for detection strategies using redox cycling [38]. However, the resolution is comparable to screen-printing and LIG is very well suitable for general use [39].…”

Section: Discussionmentioning

confidence: 99%

Process-property correlations in laser-induced graphene electrodes for electrochemical sensing

et al. 2021

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Laser-induced graphene (LIG) has emerged as a promising electrode material for electrochemical point-of-care diagnostics. LIG offers a large specific surface area and excellent electron transfer at low-cost in a binder-free and rapid fabrication process that lends itself well to mass production outside of the cleanroom. Various LIG micromorphologies can be generated when altering the energy input parameters, and it was investigated here which impact this has on their electroanalytical characteristics and performance. Energy input is well controlled by the laser power, scribing speed, and laser pulse density. Once the threshold of required energy input is reached a broad spectrum of conditions leads to LIG with micromorphologies ranging from delicate irregular brush structures obtained at fast, high energy input, to smoother and more wall like albeit still porous materials. Only a fraction of these LIG structures provided high conductance which is required for appropriate electroanalytical performance. Here, it was found that low, frequent energy input provided the best electroanalytical material, i.e., low levels of power and speed in combination with high spatial pulse density. For example, the sensitivity for the reduction of K3[Fe(CN)6] was increased almost 2-fold by changing fabrication parameters from 60% power and 100% speed to 1% power and 10% speed. These general findings can be translated to any LIG fabrication process independent of devices used. The simple fabrication process of LIG electrodes, their good electroanalytical performance as demonstrated here with a variety of (bio)analytically relevant molecules including ascorbic acid, dopamine, uric acid, p-nitrophenol, and paracetamol, and possible application to biological samples make them ideal and inexpensive transducers for electrochemical (bio)sensors, with the potential to replace the screen-printed systems currently dominating in on-site sensors used. Graphical abstract

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Section: Discussionmentioning

confidence: 99%

Process-property correlations in laser-induced graphene electrodes for electrochemical sensing

et al. 2021

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“…Apart from conventional macroelectrodes, microelectrodes and nanoelectrodes have been developed with advanced materials and instrumentation, leading to miniaturized, simplified, and computerized detection methods . The concept of lab-on-a-chip has attracted many researchers, who use screen printing technologies to develop screen-printed electrodes (SPEs) on various substrates (e.g., plastic, ceramic, and paper , ). The small and disposable electrodes can offer many advantages, such as analyzing small sample volumes, without analyte carry-over, and with easy cleaning for point-of-use applications .…”

Section: Recent Advances and Final Remarksmentioning

confidence: 99%

Electrochemical Methods for the Analysis of Milk

Motshakeri

Sharma

Phillips

et al. 2022

J. Agric. Food Chem.

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The milk and dairy industries are some of the most profitable sectors in many countries. This business requires close control of product quality and continuous testing to ensure the safety of the consumers. The potential risk of contaminants or degradation products and undesirable chemicals necessitates the use of fast, reliable detection tools to make immediate production decisions. This review covers studies on the application of electrochemical methods to milk (i.e., voltammetric and amperometric) to quantify different analytes, as reported over the last 10 to 15 years. The review covers a wide range of analytes, including allergens, antioxidants, organic compounds, nitrogen-and aldehyde containing compounds, biochemicals, heavy metals, hydrogen peroxide, nitrite, and endocrine disruptors. The review also examines pretreatment procedures applied to milk samples and the use of novel sensor materials. Final perspectives are provided on the future of cost-effective and easy-to-use electrochemical sensors and their advantages over conventional methods.

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“…Screen-printing technologies gave prominence to electrochemical biosensors toward point-of-use application. SPEs can be printed on paper, plastic, and ceramic substrates for convenient handling and ease of use. Furthermore, SPE can be modified with nanomaterials, polymers, and immobilized with biological components with ease, thereby improving the sensitivity and selectivity of the biosensors.…”

Section: Electrochemical Biosensorsmentioning

confidence: 99%

A Comprehensive Review: Development of Electrochemical Biosensors for Detection of Cyanotoxins in Freshwater

et al. 2019

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Cyanobacteria harmful algal blooms are increasing in frequency and cyanotoxins have become an environmental and public concern in the U.S. and worldwide. In this Review, the majority of reported studies and developments of electrochemical affinity biosensors for cyanotoxins are critically reviewed and discussed. Essential background information about cyanobacterial toxins and electrochemical biosensors is combined with the rapidly moving development of electrochemical biosensors for these toxins. Current issues and future challenges for the development of useful electrochemical biosensors for cyanotoxin detection that meet the demands for applications in field freshwater samples are discussed. The major aspects of the entire review article in a prescribed sequence include (i) the state-of-the-art knowledge of the toxicity of cyanotoxins, (ii) important harmful algal bloom events, (iii) advisories, guidelines, and regulations, (iv) conventional analytical methods for determination of cyanotoxins, (v) electrochemical transduction, (vi) recognition receptors, (vii) reported electrochemical biosensors for cyanotoxins, (viii) summary of analytical performance, and (ix) recent advances and future trends. Discussion includes electrochemical techniques and devices, biomolecules with high affinity, numerous array designs, various detection approaches, and research strategies in tailoring the properties of the transducer-biomolecule interface. Scientific and engineering aspects are presented in depth. This review aims to serve as a valuable source to scientists and engineers entering the interdisciplinary field of electrochemical biosensors for detection of cyanotoxins in freshwaters.

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Fine line screen printed electrodes for polymer microfluidics

Cited by 8 publications

References 3 publications

Process-property correlations in laser-induced graphene electrodes for electrochemical sensing

Process-property correlations in laser-induced graphene electrodes for electrochemical sensing

Electrochemical Methods for the Analysis of Milk

A Comprehensive Review: Development of Electrochemical Biosensors for Detection of Cyanotoxins in Freshwater

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