Results 21 to 30 of about 20,776 (229)

The realization of an integrated Mach-Zehnder waveguide immunosensor in silicon technology [PDF]

open access: yes, 1997
We describe the realization of a symmetric integrated channel waveguide Mach-Zehnder sensor which uses the evanescent field to detect small refractive-index changes (¿nmin ¿ 1 × 10¿4) near the guiding-layer surface.
Brugman, A.M.   +5 more
core   +2 more sources

Electrochemical immunosensor detection for lactoferrin in milk powder

open access: yesInternational Journal of Electrochemical Science, 2018
A lactoferrin (LF) immunosensor was fabricated by immobilizing an LF monoclonal antibody on a gold electrode, and the assembly process was tracked by cyclic voltammetric measurements and electrochemical impedance spectroscopy.
Junyi Huang   +6 more
doaj   +1 more source

Inhibition-based first-generation electrochemical biosensors: theoretical aspects and application to 2,4-dichlorophenoxy acetic acid detection [PDF]

open access: yes, 2016
In this work, several theoretical aspects involved in the first-generation inhibition-based electrochemical biosensor measurements have been discussed. In particular, we have developed a theoretical-methodological approach for the characterization of the
Antiochia, Riccarda   +6 more
core   +1 more source

Polarimetric optical-fibre sensor for biochemical measurements [PDF]

open access: yes, 1993
The use of an optical-fibre polarimeter as a chemical sensor is demonstrated. The compound to be detected is allowed to adsorb onto a decladded 5 cm length of the fibre.
Greve, Jan   +2 more
core   +2 more sources

A Novel Electrochemical Immunosensor for Detection of AngiotensinII at a Glass Carbon Electrode Modified by Carbon Nanotubes/Chitosan Film

open access: yesInternational Journal of Electrochemical Science, 2013
A novel electrochemical competitive immunosensor was successfully developed for the detection AngiotensinII using the glass carbon electrode (GCE) modified with the single-walled carbon nanotubes/chitosan (SWNTs/CS) film.
Rong Luo   +7 more
doaj   +1 more source

Design of highly stabilized nanocomposite inks based on biodegradable polymer-matrix and gold nanoparticles for Inkjet Printing [PDF]

open access: yes, 2019
Nowadays there is a worldwide growing interest in the Inkjet Printing technology owing to its potentially high levels of geometrical complexity, personalization and resolution.
Aguilera Velázquez, José Raúl   +5 more
core   +1 more source

A Bifunctional Nanosilver-Reduced Graphene Oxide Nanocomposite for Label-Free Electrochemical Immunosensing

open access: yesFrontiers in Chemistry, 2021
A bi-functional material based on silver nanoparticles (AgNPs)-reduced graphene oxide (rGO) composite for both electrode modification and signal generation is successfully synthesized for use in the construction of a label-free electrochemical ...
Supakeit Chanarsa   +6 more
doaj   +1 more source

Magnetic Nanoparticles Immobilization and Functionalization for Biosensor Applications

open access: yesInternational Journal of Electrochemistry, 2011
We describe an approach for E. coli bacteria detection using an electrochemical immunosensor. The immunosensor was based on functionalized magnetic nanoparticles immobilized onto bare gold electrode.
M. B. Mejri, A. Tlili, A. Abdelghani
doaj   +1 more source

Fabrication of an Electrochemical Immunosensor Containing Au–Ag Alloy for the Detection of Alpha Fetoprotein

open access: yesInternational Journal of Electrochemical Science, 2017
This study presented the enzyme-free determination of alpha fetoprotein (AFP) using a new electrochemical immunosensor. Our proposed immunosensor consisted of a sandwich system involving catalytic Au–Ag nanocrystals.
Shilong Yu   +4 more
doaj   +1 more source

The potentiality of the functionalized nitrogen and thiol-doped graphene quantum dots (GQDs-N-S) to stabilize the antibodies in the designing of human chorionic gonadotropin immunosensor [PDF]

open access: yesNanochemistry Research, 2019
In this study, for the first time, a simple immunosensor for ultrasensitive recognition of Human Chorionic Gonadotropin (hCG) in serum samples was fabricated by exploiting a simple approach.
Mahmoud Roushani   +2 more
doaj   +1 more source

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