نتایج جستجو برای: electrochemical sensing

تعداد نتایج: 174274  

2016
Yiheng Qin Arif U. Alam Matiar M. R. Howlader Jamal Deen

© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 1 wileyonlinelibrary.com applications, metal nanoparticles, oxides, polymers, and many other materials were inkjet-printed.[1] However, the inkjet printing of an essential material for electrochemical applications, palladium (Pd), is less commonly reported. Pd is of significant importance for electrochemical applications due to its high electroc...

Journal: :Physical chemistry chemical physics : PCCP 2016
Nihan Aydemir Jenny Malmström Jadranka Travas-Sejdic

Conducting polymer (CP)-based electrochemical biosensors have gained great attention as such biosensor platforms are easy and cost-effective to fabricate, and provide a direct electrical readout for the presence of biological analytes with high sensitivity and selectivity. CP materials themselves are both sensing elements and transducers of the biological recognition event at the same time, sim...

2007
Zhiqiang Liang Ruojun Lao Jing Wang Yongbiao Liu Lihua Wang Qing Huang Shiping Song Genxi Li Chunhai Fan

Carbon nanotubes (CNTs) can be effectively dispersed and functionalized by wrapping with long single-stranded DNA (ssDNA) synthesized by asymmetric PCR. The ssDNA-CNTs attached on surface of glass carbon electrode made it possible for electrochemical analysis and sensing, which was demonstrated by reduction of H2O2 on hemoglobin/ssDNA-CNTs modified electrodes. This research showed the potential...

2015
Frederic LOIZEAU Thomas JARAMILLO Beth PRUITT

Introduction The electrochemical gas sensor project is now at a state were the results of the first test pointed out the different needs for improvement and optimization both of the fabrication process and the testing. This report will focus on this sensor, detail the obtained results for CO sensing, and list the different feedbacks obtained. All those information will help building a second ge...

Journal: :Chemical communications 2011
Chaoliang Tan Qianming Wang Cheng Cheng Zhang

An effective single-walled carbon nanotube (SWNT) covalently loaded with unsaturated terbium emissive material was designed for specific and rapid (2-3 s) detection of calcium dipicolinate (CaDPA) (detection limit 1 μM). The nanoprobe was successfully assembled onto electrodes and its sensing abilities were investigated through electrochemical measurement. Cyclic voltammetry curves were selecti...

2012
Frank J. Hernandez Veli Cengiz Ozalp

Electrochemical aptasensors, which are based on the specificity of aptamer-target recognition, with electrochemical transduction for analytical purposes have received particular attention due to their high sensitivity and selectivity, simple instrumentation, as well as low production cost. Aptamers are functional nucleic acids with specific and high affinity to their targets, similar to antibod...

Journal: :The Analyst 2015
Grégoire Herzog

Ion transfer at the interface between two immiscible electrolyte solutions allows the non-redox electrochemical detection of ions ranging from protons to macromolecules such as proteins. New electrochemical methods and analytical procedures have been developed in recent years to achieve limits of detection of from μM down to tens of pM for ion sensing in biomedical diagnostics and in environmen...

2014
Simonetta Palmas Michele Mascia Annalisa Vacca Claudia Espro Nicola Donato Signorino Galvagno Davide Aloisio Salvatore G. Leonardi Giovanni Neri

A three electrodes planar electrochemical sensor, based on CuO nanowires growth “in situ” on Cu working electrode, was fabricated by a simple micromachining technique and employed for the non-enzymatic determination of glucose. The microstructural and morphological characteristics of the modified electrode was investigated by XRD and SEM analysis. Cyclic voltammetry and chronoamperometric measu...

2015
Zhiyang Li Calvin Leung Fan Gao Zhiyong Gu

In this paper, vertically aligned Pt nanowire arrays (PtNWA) with different lengths and surface roughnesses were fabricated and their electrochemical performance toward hydrogen peroxide (H₂O₂) detection was studied. The nanowire arrays were synthesized by electroplating Pt in nanopores of anodic aluminum oxide (AAO) template. Different parameters, such as current density and deposition time, w...

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