نتایج جستجو برای: electrochemical

تعداد نتایج: 51474  

2013
K. Ino Y. Kanno H. Komaki H. Shiku

In the present study, we densified electrochemical sensors using vertically separated electrodes for electrochemical imaging, and the density of electrochemical sensors was dramatically improved, compared to our previous reports.

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2015
Jiao Li Hanping He Xiaoqian Peng Min Huang Xiuhua Zhang Shengfu Wang

A bifunctional probe (FecNC), containing a recognition part and an electrochemical active center, was applied to electrochemical detection of GG mismatch duplexes. The preparation of gold electrodes modified by mismatch and complementatry duplexes was characterized by electrochemical impedance spectroscopy (EIS) and optimized for better detection in terms of self-assembly time, hybridization ti...

Journal: :Lab on a chip 2015
Yusuke Kanno Kosuke Ino Hitoshi Shiku Tomokazu Matsue

An electrochemical device, which consists of electrode arrays, nanocavities, and microwells, was developed for multi-electrochemical detection with high sensitivity. A local redox cycling-based electrochemical (LRC-EC) system was used for multi-electrochemical detection and signal amplification. The LRC-EC system consists of n(2) sensors with only 2n bonding pads for external connection. The na...

2013
Landon Oakes Andrew Westover Jeremy W. Mares Shahana Chatterjee William R. Erwin Rizia Bardhan Sharon M. Weiss Cary L. Pint

Silicon materials remain unused for supercapacitors due to extreme reactivity of silicon with electrolytes. However, doped silicon materials boast a low mass density, excellent conductivity, a controllably etched nanoporous structure, and combined earth abundance and technological presence appealing to diverse energy storage frameworks. Here, we demonstrate a universal route to transform porous...

Journal: :applied biotechnology reports 0
mohammad ebrahim minaei department of biology, imam hossein university, tehran, iran mojtaba saadati department of biology, imam hossein university, tehran, iran mostafa najafi department of chemistry, imam hossein university, tehran, iran hossein honari department of biology, imam hossein university, tehran, iran

in this study, we explained a nanobiosensor for dna sequence detection, featuring sequence specificity, cost efficiency, speed, and ease of use. without the need for labels or indicators, it may be ideal for the detection of biological agents. this review describes recent advances in electrochemical impedance spectroscopy (eis) with an emphasis on using nanoparticles and nanotechnology. a power...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1994
m.d.(davood) nabi rahni h.allen o. hill

even though the use of enzymes as useful analytical reagents when immobilized onto a transducer such as an electrochemical device has been reported in the literature for nearly two decades, the direct, i.e. unmediated electrochemistry of enzymes is, nevertheless, a rather recent development. efforts will be made to introduce the fundamental basis for protein-surface interactions with emphasis o...

Journal: :iranian journal of radiation research 0
m.r. deevband department of biophysics, tarbiat modares university, tehran, iran p. abdolmaleki department of biophysics, tarbiat modares university, tehran, iran m.r. kardan nuclear sciences research school, radiation applications research school, tehran, iran h.r. khosravi nuclear sciences research school, nuclear sciences and technology research institute, tehran, iran m. taheri national radiation protection department, iranian nuclear regulatory authority, tehran, iran f. nazeri national radiation protection department, iranian nuclear regulatory authority, tehran, iran

background: the poly-allyl diglycol carbonate (padc) detector is of particular interest for development of a fast neutron dosimeter. fast neutrons interact with the constituents of the cr-39 detector and produce h, c and o recoils, as well as (n, α) reaction. these neutron- induced charged particles contribute towards the response of cr-39 detectors. material and methods: electrochemical etchin...

Journal: :Physical review letters 2008
Vladimir García-Morales Katharina Krischer

By means of an extended center-manifold reduction, we derive the nonlocal complex Ginzburg-Landau equation (NCGLE) valid for electrochemical systems with migration coupling. We carry out the stability analysis of the uniform oscillation, elucidating the role of the nonlocal coupling in electrochemical systems at the vicinity of a supercritical Hopf bifurcation. We apply the NCGLE to an experime...

Journal: :journal of reports in pharmaceutical sciences 0
mahsa azami department of pharmaceutics, faculty of pharmacy, kermanshah university of medical sciences, kermanshah, iran elham arkan nano drug delivery research center, kermanshah university of medical sciences, kermanshah, iran

this review reports recent advances in metallic nanostructures based electrochemical sensors. interesting aspects of nps include size and shape-dependent interatomic bond distances, melting points, chemical reactivity, and optical and electronic properties. the small size of metallic nanostructures has allowed nanoscale electrochemical processes to be probed. electrochemical characteristics can...

Journal: :Analytical chemistry 2003
Jung-Suk Yoo Inja Song Ji-Hun Lee Su-Moon Park

Development of an in situ technique for measuring electrochemical impedance spectra in real time during an electrochemical experiment is described. The technique is based on staircase voltammetry with relatively large step heights, in which a series of increasing potential steps are applied to an electrochemical system, and the resulting currents are sampled. The first derivatives of the curren...

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