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      Electrochemical Behaviour of Ti/Al 2O 3/Ni Nanocomposite Material in Artificial Physiological Solution: Prospects for Biomedical Application


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          Inorganic-based nanoelements such as nanoparticles (nanodots), nanopillars and nanowires, which have at least one dimension of 100 nm or less, have been extensively developed for biomedical applications. Furthermore, their properties can be varied by controlling such parameters as element shape, size, surface functionalization, and mutual interactions. In this study, Ni-alumina nanocomposite material was synthesized by the dc-Ni electrodeposition into a porous anodic alumina template (PAAT). The structural, morphological, and corrosion properties were studied using x-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), and electrochemical techniques (linear sweep voltammetry). Template technology was used to obtain Ni nanopillars (NiNPs) in the PAAT nanocomposite. Low corrosion current densities (order of 0.5 µA/cm 2) were indicators of this nanocomposite adequate corrosion resistance in artificial physiological solution (0.9% NaCl). A porous anodic alumina template is barely exposed to corrosion and performs protective functions in the composite. The results may be useful for the development of new nanocomposite materials technologies for a variety of biomedical applications including catalysis and nanoelectrodes for sensing and fuel cells. They are also applicable for various therapeutic purposes including targeting, diagnosis, magnetic hyperthermia, and drug delivery. Therefore, it is an ambitious task to research the corrosion resistance of these magnetic nanostructures in simulated body fluid.

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          Electrochemical Polarization

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            Electrical/electrochemical impedance for rapid detection of foodborne pathogenic bacteria.

            The realization of rapid, sensitive, and specific methods to detect foodborne pathogenic bacteria is central to implementing effective practice to ensure food safety and security. As a principle of transduction, the impedance technique has been applied in the field of microbiology as a means to detect and/or quantify foodborne pathogenic bacteria. The integration of impedance with biological recognition technology for detection of bacteria has led to the development of impedance biosensors that are finding wide-spread use in the recent years. This paper reviews the progress and applications of impedance microbiology for foodborne pathogenic bacteria detection, particularly the new aspects that have been added to this subject in the past few years, including the use of interdigitated microelectrodes, the development of chip-based impedance microbiology, and the use of equivalent circuits for analysis of the impedance systems. This paper also reviews the significant developments of impedance biosensors for bacteria detection in the past 5 years, focusing on microfabricated microelectrodes-based and microfluidic-based Faradaic electrochemical impedance biosensors, non-Faradaic impedance biosensors, and the integration of impedance biosensors with other techniques such as dielectrophoresis and electropermeabilization.
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              Uniform Nickel Deposition into Ordered Alumina Pores by Pulsed Electrodeposition


                Author and article information

                Nanomaterials (Basel)
                Nanomaterials (Basel)
                19 January 2020
                January 2020
                : 10
                : 1
                [1 ]Department of Micro- and Nanoelectronics, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus; vorobjova@ 123456bsuir.by (A.V.); shdl@ 123456tut.by (D.S.)
                [2 ]Laboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, Belarus; fix.tatyana@ 123456gmail.com (T.Z.); sv_truhanov@ 123456mail.ru (S.T.); truhanov86@ 123456mail.ru (A.T.); fedosyuk@ 123456physics.by (V.F.)
                [3 ]Laboratory of Single Crystal Growth, South Ural State University, 454080 Chelyabinsk, Russia; denisvinnik@ 123456gmail.com
                [4 ]The Institute of Nuclear Physics, Almaty 050032, Kazakhstan; mzdorovets@ 123456gmail.com (M.Z.); artem88sddt@ 123456mail.ru (A.K.)
                [5 ]L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, Kazakhstan
                [6 ]Ural Federal University named after the First President of Russia B.N. Yeltsin, 620075 Yekaterinburg, Russia
                [7 ]Department of Resource and Environment, Northeastern University, Shenyang 110819, China; mg_dong@ 123456163.com
                Author notes
                [* ]Correspondence: dashachushkova@ 123456gmail.com ; Tel.: +375-2956-28187
                © 2020 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).


                nickel-alumina,nanocomposite,electrochemical deposition,potentiodynamic polarization,cyclic voltammetry,corrosion resistance,biomedicine


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