نتایج جستجو برای: electrochemical technique

تعداد نتایج: 659659  

Journal: :Biosensors & bioelectronics 2005
L Micheli R Grecco M Badea D Moscone G Palleschi

The production and assembling of disposable electrochemical AFM1 immunosensors, which can combine the high selectivity of immunoanalysis with the ease of the electrochemical probes, has been carried out. Firstly immunoassay parameters such as amounts of antibody and labelled antigen, buffer and pH, length of time and temperature of each steps (precoating, coating, binding and competition steps)...

Journal: :journal of nanostructures 0
mohammad mazloum-ardakani department of chemistry, faculty of science, yazd university, yazd, iran fatemeh farbod department of chemistry, faculty of science, yazd university, yazd, iran laleh hosseinzadeh department of chemistry, faculty of science, yazd university, yazd, iran

the combination of graphene and nickel oxide nanoparticles yields nanostructured electrochemical sensor formed a novel kind of structurally uniform and electrocatalytic activity material. in cyclic voltammetry studies, in the presence of epinephrine, nickel oxide / graphene  composite modified electrode shows a significantly higher current response for epinephrine oxidation. based on differenti...

2014
Issei Sugiyama Yunseok Kim Stephen Jesse Evgheni Strelcov Amit Kumar Alexander Tselev Ehasan Kabiri Rahani Vivek B. Shenoy Takahisa Yamamoto Naoya Shibata Yuichi Ikuhara Sergei V. Kalinin

Bias-induced oxygen ion dynamics underpins a broad spectrum of electroresistive and memristive phenomena in oxide materials. Although widely studied by device-level and local voltage-current spectroscopies, the relationship between electroresistive phenomena, local electrochemical behaviors, and microstructures remains elusive. Here, the interplay between history-dependent electronic transport ...

2014
Stephen M. Oja Joshua P. Guerrette Michelle R. David Bo Zhang

Recently, we introduced a new electrochemical imaging technique called fluorescence-enabled electrochemical microscopy (FFEM). The central idea of FEEM is that a closed bipolar electrode is utilized to electrically couple a redox reaction of interest to a complementary fluorogenic reaction converting an electrochemical signal into a fluorescent signal. This simple strategy enables one to use fl...

Journal: :Physical chemistry chemical physics : PCCP 2012
Ushula Mengesha Tefashe Melanie Rudolph Hidetoshi Miura Derck Schlettwein Gunther Wittstock

Porous ZnO electrodes on fluorine-doped tin oxide (FTO) were prepared by electrochemical deposition from an O(2)-saturated ZnCl(2) solution in the presence of eosin Y as a structure directing agent (SDA). Sensitization was reached by desorption of the SDA and subsequent adsorption of the indoline dye D149. The influence of film thickness and dye concentration in the films on their photovoltaic ...

Journal: :Applied and environmental microbiology 1980
J R Wilkins D C Grana S S Fox

The electrochemical method was used successfully to detect Escherichia coli cells retained on membrane filters. Preliminary results suggest that the combined technique could be used to predict the microbial loading of water samples.

Journal: :Chemical communications 2011
Yuwei Hu Fenghua Li Xiaoxue Bai Dan Li Shucheng Hua Kaikai Wang Li Niu

Negative-charge change and conformation transition upon DNA immobilization and hybridization on functionalized graphene sheets were monitored by the EIS technique and adopted as the signal for label-free electrochemical DNA hybridization detection.

2002
Allen J. Bard Fu-Ren F. Fan Juhyoun Kwak

The technlque of scannlng electrochemical mlcroscopy (SECM) Is descrlbed. I n thls technlque the electrolysls current that flows as an ultramicroelectrode tlp (diameter ca. 10 gm) Immersed In a soiutlon Is moved above a substrate surface is used to characterize processes and structural features of the substrate. Modes of Operation consldered Include collectlon modes, where products electrogener...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید