Results 51 to 60 of about 86,852 (332)

Determination of epinephrine in the presence of uric acid and folic acid using nanostructure-based electrochemical sensor [PDF]

open access: yesJournal of Nanostructures, 2011
Fabrication and electrochemical characterization of a sensor for the determination of epinephrine (EP), uric acid (UA) and folic acid (FA) is described. The sensor  was prepared using carbon paste electrode (CPE) modified with 3,4-dihydroxybenzaldehyde-2,
M. Mazloum-Ardakani   +3 more
doaj   +1 more source

A Fully Differential CMOS Potentiostat [PDF]

open access: yes, 2009
A CMOS potentiostat for chemical sensing in a noisy environment is presented. The potentiostat measures bidirectional electrochemical redox currents proportional to the concentration of a chemical down to pico-ampere range.
Genov, Roman, Nazari, Meisam Honarvar
core   +1 more source

Thermally Engineered Sodium‐Embedded Alumina with Programmable Synaptic Plasticity for Neuromorphic Transistors

open access: yesAdvanced Functional Materials, EarlyView.
A fully transparent, all‐metal‐oxide neuromorphic transistor using a sodium‐embedded alumina (SEA) electrolyte is demonstrated. By precisely tuning the thermal annealing process, the chemical composition of the SEA layer is controlled, allowing for the deterministic realization of both short‐term and long‐term synaptic plasticity within the same device
Yonghyun Albert Kwon   +7 more
wiley   +1 more source

Copper Complexation by Dissolved Organic Matter in arid Soils: A Voltametric Study [PDF]

open access: yes, 2018
A voltammetric method was used to estimate the complexing capacity of water extracts from both desert soils sampled at the root zone of creosote and salt cedar plants, and in soils from interspace or background regions where no vegetative influence was ...
Hodge, Vernon F., Steinberg, Spencer M.
core   +2 more sources

Fast Charge–Discharge of LiNi0.9Co0.05Mn0.05 Enabled by a Bikitaite‐Infused Separator for Li Metal Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A bikitaite‐infused cellulose separator is introduced for Li metal batteries, leveraging bikitaite zeolite's ion‐conductive properties to regulate Li+‐ion flux and suppress dendrite growth. The membrane design ensures uniform Li plating, enhanced electrolyte wettability, and robust thermal/mechanical stability, delivering stable performance and low ...
Isheunesu Phiri   +2 more
wiley   +1 more source

Quantification of metallic copper and nickel in their binary mixtures by voltammetry of immobilized microparticles [PDF]

open access: yes, 2013
We report the use of voltammetry of immobilized microparticles for the quantification of metallic copper and nickel in their binary mixtures. Twenty-two electrolytes were investigated in order to obtain well-separated oxidation peaks.
Adriaens, Mieke   +3 more
core   +1 more source

Ellagitannin HeT obtained from strawberry leaves is oxidized by bacterial membranes and inhibits the respiratory chain [PDF]

open access: yes, 2018
Plant secondary metabolism produces a variety of tannins that have a wide range of biological activities, including activation of plant defenses and antimicrobial, anti-inflammatory and antitumoral effects.
Abate, Pedro Oscar   +6 more
core   +1 more source

MXene/PEDOT Functional Coatings on Flexible Microelectrode Arrays for Multianalyte In Vivo Neurochemical Sensing and Electrophysiology

open access: yesAdvanced Functional Materials, EarlyView.
A MXene/PEDOT coating enables multimodal functionality and dual‐analyte detection of dopamine and serotonin in flexible microelectrode arrays while enhancing electrophysiological recording quality. The anti‐fouling, low‐impedance interface overcomes key limitations of conventional coatings, providing a robust and versatile platform to investigate the ...
Ilaria Gatti   +8 more
wiley   +1 more source

Hydrogen‐Bond–Driven Ion Retention in Electrolyte‐Gated Synaptic Transistors

open access: yesAdvanced Functional Materials, EarlyView.
Anion molecular design governs ion–polymer interactions in electrolyte‐gated synaptic transistors. Asymmetric anions induce hydrogen‐bond interactions that suppress ion back‐diffusion and stabilize doping, enabling enhanced nonvolatile synaptic properties.
Donghwa Lee   +5 more
wiley   +1 more source

Electrochemical determination of tannic acid using graphite electrodes sourced from waste zinc-carbon batteries

open access: yesSensing and Bio-Sensing Research, 2020
A cost-effective and environment-friendly electrochemical sensor based on waste-battery graphite electrodes is developed. The electrodes were extracted from different brands of waste zinc‑carbon batteries and were used as the working electrode in ...
Shirley T. Palisoc   +6 more
doaj   +1 more source

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