Results 1 to 10 of about 54,612 (308)

Sensitive Electrochemical Detection of Phosphorylated-Tau Threonine 231 in Human Serum Using Interdigitated Wave-Shaped Electrode

open access: yesBiomedicines, 2021
The development of an electrochemical biosensor for the detection of phosphorylated-tau threonine 231 (p-tau231), a biomarker of Alzheimer’s disease (AD), has yet to be achieved.
Hien T. Ngoc Le, Sungbo Cho
doaj   +1 more source

Controlled Synthesis of Silver Nanoparticles Using Double Reductants and Its Voltammetric Characteristics Study [PDF]

open access: yes, 2016
Constructing robust silver nanoparticles (AgNPs) with good shape and dispersibility is of particular interest in analytical applications. Herein, monodispersibility AgNPs with the average size of 20 nm have been successfully prepared via one-pot method ...
Duan, Yubo, Jiang, Xiaochun, Xu, Zhihua
core   +2 more sources

Construction of a Biosensor Based on a Combination of Cytochrome c, Graphene, and Gold Nanoparticles

open access: yesSensors, 2018
A biosensor based on a combination of cytochrome c (Cyt c), electrochemical reduced graphene oxides (ERGO), and gold nanoparticles (AuNPs) on a glassy carbon electrode (GCE) was fabricated.
Chenxing Guo   +6 more
doaj   +1 more source

Development of Gelatin-Alginate-TiO2-SOD Biosensor for the Detection of Superoxide Radicals

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2020
In this work, a biosensor that uses gelatin and alginate hydrogels in addition to titanium dioxide (TiO2) nanoparticles (NPs) as sensor matrix was developed in order to detect superoxide radicals (O2•-), which play role in carcinogenesis when present in ...
Utku KARAKAYA   +2 more
doaj   +1 more source

Accelerated Electron Transfer in Nanostructured Electrodes Improves the Sensitivity of Electrochemical Biosensors

open access: yesAdvanced Science, 2021
Electrochemical biosensors hold the exciting potential to integrate molecular detection with signal processing and wireless communication in a miniaturized, low‐cost system. However, as electrochemical biosensors are miniaturized to the micrometer scale,
Kaiyu Fu   +7 more
doaj   +1 more source

Flavin adenine dinucleotide functionalized gold nanoparticles for the electrochemical detection of dopamine

open access: yesSensors and Actuators Reports, 2022
Dopamine (DA) is a neurotransmitter with multiple functions in the central nervous system, and whether found in low levels, activation of biological defense system and physiological activity is influenced.
Jennifer de Pontes Medrades   +4 more
doaj   +1 more source

Ultrasensitive DNAzyme-based electrochemical biosensor for Pb2+ based on FcHT-mediated biocatalytic amplification

open access: yesInternational Journal of Electrochemical Science, 2018
A ultrasensitive DNAzyme-based electrochemical biosensor for Pb2+ was developed by simultaneously modifying with GR-5 DNAzyme-substrate complex and 6-(ferroceney) hexanethiol (FcHT, a electron mediator) on Au electrode.
Jikui Wu   +5 more
doaj   +1 more source

Sensitive Electrochemical Detection of Creatinine at Disposable Screen-Printed Carbon Electrode Mixed with Ferrocenemethanol

open access: yesInternational Journal of Electrochemical Science, 2013
A rapid, simple and sensitive electrochemical assay of creatinine based on disposable screen-printed carbon electrode mixed with ferrocenemethanol (Fc-SPCE) was developed. The Fc-SPCE was covered with the enzyme ink containing creatinine amidinohydrolase,
Ping Chen   +5 more
doaj   +1 more source

DNAzyme-Amplified Electrochemical Biosensor Coupled with pH Meter for Ca2+ Determination at Variable pH Environments

open access: yesNanomaterials, 2021
For more than 50% of multiparous cows, it is difficult to adapt to the sudden increase in calcium demand for milk production, which is highly likely to cause hypocalcemia.
Hui Wang   +10 more
doaj   +1 more source

Mediator-free interaction of glucose oxidase, as model enzyme for immobilization, with Al-doped and undoped ZnO thin films laser-deposited on polycarbonate supports [PDF]

open access: yes, 2017
Al doped and undoped ZnO thin films were deposited by pulsed-laser deposition on polycarbonate sheets. The films were characterized by optical transmission, Hall effect measurement, XRD and SEM.
Inguva, Saikumar   +5 more
core   +1 more source

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