Search Results - "O'Neil, Glen D."

Single-step fabrication of electrochemical flow cells utilizing multi-material 3D printing by O'Neil, Glen D., Ahmed, Shakir, Halloran, Kevin, Janusz, Jordyn N., Rodríguez, Alexandra, Terrero Rodríguez, Irina M.

“…Here we present methodology for fabricating electrochemical flow cells with embedded carbon-composite electrodes in a single step using simultaneous 3D…”
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Electrodeposition Parameters Dramatically Influence the Morphology, Stability, and Performance of n‐Si/Pt Light‐Addressable Electrochemical Sensors by Hernandez, Jocelyn B., Epright, Zackary D., Terrero Rodríguez, Irina M., O'Neil, Glen D.

“…Light addressable electrochemical (LAE) sensors have seen great utility in the past several years because they enable multiple localized electrochemical…”
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Voltammetric pH Measurements in Unadulterated Foodstuffs, Urine, and Serum with 3D-Printed Graphene/Poly(Lactic Acid) Electrodes by Rabboh, Fakher M, O’Neil, Glen D

“…The pH of a system is a critical descriptor of its chemistryimpacting reaction rates, solubility, chemical speciation, and homeostasis. As a result, pH is one…”
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Trace Analysis of Heavy Metals (Cd, Pb, Hg) Using Native and Modified 3D Printed Graphene/Poly(Lactic Acid) Composite Electrodes by Walters, John G., Ahmed, Shakir, Terrero Rodríguez, Irina M., O'Neil, Glen D.

“…Here we investigate the use of 3D printed graphene/poly(lactic acid) (PLA) electrodes for quantifying trace amounts of Hg, Pb, and Cd. We prepared cylindrical…”
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Square-Wave Voltammetry Enables Measurement of Light-Activated Oxidations and Reductions on n‑Type Semiconductor/Metal Junction Light-Addressable Electrochemical Sensors by Arthur, Enock G., Ali, Hana, Hussain, Armeen, O’Neil, Glen D.

“…Light-addressable electrochemical (LAE) sensing is a photoelectrochemical technique that enables high-density, individually addressed electrochemical…”
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Photoelectrochemistry of Redox-Active Self-Assembled Monolayers Formed on n‑Si/Au Nanoparticle Photoelectrodes by Mancini, Kayla M., Khatib, Yousef, Shahine, Lauren, O’Neil, Glen D.

“…Controlling the chemistry of the electrode–solution interface is critically important for applications in sensing, energy storage, corrosion prevention,…”
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Direct Identification and Analysis of Heavy Metals in Solution (Hg, Cu, Pb, Zn, Ni) by Use of in Situ Electrochemical X‑ray Fluorescence by O’Neil, Glen D, Newton, Mark E, Macpherson, Julie V

“…The development and application of a new methodology, in situ electrochemical X-ray fluorescence (EC-XRF), is described that enables direct identification and…”
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Evidence of martian perchlorate, chlorate, and nitrate in Mars meteorite EETA79001: Implications for oxidants and organics by Kounaves, Samuel P., Carrier, Brandi L., O’Neil, Glen D., Stroble, Shannon T., Claire, Mark W.

“…•Analyses of martian meteorite EETA79001 show presence of ClO4-, ClO3-, and NO3-.•ClO4- concentration too high to be accounted for by accumulation during 12kyr…”
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Light-Addressable Electrochemical Sensing with Electrodeposited n‑Silicon/Gold Nanoparticle Schottky Junctions by Terrero Rodríguez, Irina M, Borrill, Alexandra J, Schaffer, Katherine J, Hernandez, Jocelyn B, O’Neil, Glen D

“…Light-addressable electrochemical sensors (LAESs) are a class of sensors that use light to activate an electrochemical reaction on the surface of a…”
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Identification of the perchlorate parent salts at the Phoenix Mars landing site and possible implications by Kounaves, Samuel P., Chaniotakis, Nikos A., Chevrier, Vincent F., Carrier, Brandi L., Folds, Kaitlyn E., Hansen, Victoria M., McElhoney, Kyle M., O’Neil, Glen D., Weber, Andrew W.

“…•New analyses of Phoenix data identifies dominant perchlorate salt as calcium-perchlorate.•Results suggest that Ca(ClO4)2 in soil has rarely, if ever, been in…”
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Solid Contact Ion-Selective Electrodes for in Situ Measurements at High Pressure by Weber, Andrew W, O’Neil, Glen D, Kounaves, Samuel P

“…Solid contact polymeric ion-selective electrodes (SC-ISEs) have been fabricated using microporous carbon (μPC) as the ion-to-electron transducer, loaded with a…”
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Scanning Line Probe Microscopy: Beyond the Point Probe by O’Neil, Glen D, Kuo, Han-wen, Lomax, Duncan N, Wright, John, Esposito, Daniel V

“…Scanning probe microscopy (SPM) techniques have become indispensable tools for studying nano- and microscale materials and processes but suffer from a…”
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Electrochemical X‑ray Fluorescence Spectroscopy for Trace Heavy Metal Analysis: Enhancing X‑ray Fluorescence Detection Capabilities by Four Orders of Magnitude by Hutton, Laura A., O’Neil, Glen D., Read, Tania L., Ayres, Zoë J., Newton, Mark E., Macpherson, Julie V.

“…The development of a novel analytical technique, electrochemical X-ray fluorescence (EC-XRF), is described and applied to the quantitative detection of heavy…”
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Electrochemistry of Aqueous Colloidal Graphene Oxide on Pt Electrodes by O’Neil, Glen D, Weber, Andrew W, Buiculescu, Raluca, Chaniotakis, Nikolaos A, Kounaves, Samuel P

“…The electrochemical behavior of colloidal solutions of graphene oxide (GO) is described here in detail. The GO reduction is shown to exhibit near-reversible…”
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Stability and Lifetime of Potassium Solid-Contact Ion Selective Electrodes for Continuous and Autonomous Measurements by McElhoney, Kyle, O'Neil, Glen D., Chaniotakis, Nikos A., Kounaves, Samuel P.

“…The current generation of solid‐contact ion‐selective electrodes (SC‐ISE) suffer from lack of stability and lifetime. When using such sensors for remote,…”
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Carbon-Nanofiber-Based Nanocomposite Membrane as a Highly Stable Solid-State Junction for Reference Electrodes by O’Neil, Glen D, Buiculescu, Raluca, Kounaves, Samuel P, Chaniotakis, Nikos A

“…There is currently a need for a reliable solid-state reference electrode, especially in applications such as autonomous sensing or long-term environmental…”
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Toward single-step production of functional electrochemical devices using 3D printing: Progress, challenges, and opportunities by O'Neil, Glen D.

“…Sensors and devices that incorporate 3D printed components have gained significant attention because they are easily customized and rapidly prototyped, can…”
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The use of graphene oxide as a fixed charge carrier in ion-selective electrodes by O'Neil, Glen D., Fouskaki, Maria, Kounaves, Samuel P., Chaniotakis, Nikos A.

“…Here we present for the first time the use of graphene oxide nanoparticles as fixed-charge carriers for the development of membrane-based cation selective…”
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Development of Carbon Nanomaterial-Based Sensors for Applications in a Microfluidic Total Analysis System by O'Neil, Glen D

“…The continued understanding of the geochemistry of extreme environments requires tools that are able to deliver high-quality measurements. Ion-selective…”
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Development of Carbon Nanomaterial-Based Sensors for Applications in a Microfluidic Total Analysis System by O'Neil, Glen D

“…The continued understanding of the geochemistry of extreme environments requires tools that are able to deliver high-quality measurements. Ion-selective…”
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