Assessing the Electrochemical Behavior of Microcontact-Printed Silver Nanogrids

Sanders, Wesley C.; Iles, Peter J.; Valcarce, Ron; Salisbury, Kyle; Johnson, Glen; Lines, A.W.; Meyers, John; Page, Cristofer; Vanweerd, Myles; Young, D. A. B.

doi:10.1021/acs.jchemed.7b00403

Cited by 3 publications

(2 citation statements)

References 22 publications

(61 reference statements)

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“…Electrochemical techniques are fundamental to the development of chemosensors and biosensors, including the most widespread commercial ones, pH glass electrode and glucose biosensor. Electrochemical techniques provide a promising platform for developing sensors due to their portability, simplicity, low cost, sensitivity, selectivity, and the possibility of miniaturization. − Furthermore, designing and developing electrochemical methods with the above wide and various advantages can effectively address the emerging needs of multidisciplinary research. − Different aspects of these techniques as well as their applications can be taught through laboratory experiments in undergraduate and graduate programs. − The main objective of this laboratory experiment is to show undergraduate students how electrochemical techniques can be used for biological applications. They also learn how a pencil lead can be utilized as an electrode, which would inspire their creativity.…”

Section: Introductionmentioning

confidence: 99%

Development of an Electrochemical Sensor Using Pencil Graphite Electrode for Monitoring UV-Induced DNA Damage

Ahmadi

Fini

et al. 2020

J. Chem. Educ.

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This laboratory experiment introduces the fundamentals of electrochemical techniques to the undergraduate students by developing a simple and cost-effective miniaturized electrochemical setup for detecting UV-induced DNA damage. This is an imperative experiment, as it provides students first-hand experience with electrochemical techniques while reinforcing lecture material on the biosensing applications. In this experiment, a simple and daily use material such as an ordinary pencil lead acts as a platform for an electrochemical DNA sensor. A threeelectrode cell setup is utilized to monitor UV-induced DNA damage. Students will test the hypothesis about UV-induced DNA damage by measuring the redox signal of guanine under various experimental conditions. The simple, fast, and inexpensive setup allows students to examine the factors that would influence the electrochemical signals. This experimental work provides an opportunity for students to learn how to design a simple electrochemical experiment for research purposes as well as handling the biological samples. Proposing a hypothesis and testing it by designing an experiment are the experiences that will be gained by the students while learning about the optimization and validation of an analytical technique.

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Section: Introductionmentioning

confidence: 99%

Development of an Electrochemical Sensor Using Pencil Graphite Electrode for Monitoring UV-Induced DNA Damage

Ahmadi

Fini

et al. 2020

J. Chem. Educ.

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“…The cross-linking density of elastomers can be determined using various characterization techniques but the most common methods are swelling experiments, mechanical tests, and NMR spectroscopy. − The aim of this laboratory experiment is to quantify the cross-linking density of a silicone elastomer on the basis of swelling experiments and mechanical tests that can be easily performed in a chemistry lab. The silicone elastomer considered in this study is a commercial poly(dimethylsiloxane), namely, Sylgard 184 (Dow Corning, Midland, MI), which is widely used as a model silicone elastomer in fundamental studies as well as in educational scientific works. ,− Its synthesis simply consists of the mixture of a liquid base and a liquid curing agent, followed by a subsequent cross-linking step in an oven. Different cross-linking densities can thus be achieved by varying the base-to-curing-agent ratio for a given time and curing temperature.…”

Section: Introductionmentioning

confidence: 99%

Determination of the Crosslinking Density of a Silicone Elastomer

et al. 2019

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A laboratory experiment for the determination of the crosslinking density of silicone elastomers is described on the basis of swelling experiments and mechanical tests. In the experiment, the macroscopic swelling and mechanical behaviors of the elastomers were discussed as a function of the cross-linking density, which can be easily controlled by varying the base-to-curing-agent ratio during elastomer synthesis. The crosslinking density and the average molecular weight between cross-links were calculated from the swelling degree at equilibrium through the Flory− Rehner theory and from a simple mechanical model. The results have shown a good convergence of the average molecular weight between crosslinks calculated from the two methods, respectively. On a more general note, the suggested experiments and the associated results offered numerous opportunities for discussions on macromolecular architectures, interactions between polymers and solvents, and mechanical properties of elastomeric materials.

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Printing Technologies as an Emerging Approach in Gas Sensors: Survey of Literature

Симоненко

Fisenko

Fedorov

et al. 2022

Sensors

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Herein, we review printing technologies which are commonly approbated at recent time in the course of fabricating gas sensors and multisensor arrays, mainly of chemiresistive type. The most important characteristics of the receptor materials, which need to be addressed in order to achieve a high efficiency of chemisensor devices, are considered. The printing technologies are comparatively analyzed with regard to, (i) the rheological properties of the employed inks representing both reagent solutions or organometallic precursors and disperse systems, (ii) the printing speed and resolution, and (iii) the thickness of the formed coatings to highlight benefits and drawbacks of the methods. Particular attention is given to protocols suitable for manufacturing single miniature devices with unique characteristics under a large-scale production of gas sensors where the receptor materials could be rather quickly tuned to modify their geometry and morphology. We address the most convenient approaches to the rapid printing single-crystal multisensor arrays at lab-on-chip paradigm with sufficiently high resolution, employing receptor layers with various chemical composition which could replace in nearest future the single-sensor units for advancing a selectivity.

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Assessing the Electrochemical Behavior of Microcontact-Printed Silver Nanogrids

Cited by 3 publications

References 22 publications

Development of an Electrochemical Sensor Using Pencil Graphite Electrode for Monitoring UV-Induced DNA Damage

Development of an Electrochemical Sensor Using Pencil Graphite Electrode for Monitoring UV-Induced DNA Damage

Determination of the Crosslinking Density of a Silicone Elastomer

Printing Technologies as an Emerging Approach in Gas Sensors: Survey of Literature

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