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Imaging Glucose Oxidase by Scanning Electrochemical Microscopy

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dc.contributor.author MORKVENAITE-VILKONCIENE, Inga
dc.contributor.author RAMANAVICIUS, Arunas
dc.date.accessioned 2019-10-28T09:30:55Z
dc.date.available 2019-10-28T09:30:55Z
dc.date.issued 2013
dc.identifier.citation MORKVENAITE-VILKONCIENE, Inga, RAMANAVICIUS, Arunas. Imaging Glucose Oxidase by Scanning Electrochemical Microscopy. In: ICNBME-2013. International Conference on Nanotechnologies and Biomedical Engineering. German-Moldovan Workshop on Novel Nanomaterials for Electronic, Photonic and Biomedical Applications: proc. of the 2th intern. conf., April 18-20, 2013. Chişinău, 2013, pp. 597-600. ISBN 978-9975-62-343-8. en_US
dc.identifier.isbn 978-9975-62-343-8
dc.identifier.uri http://repository.utm.md/handle/5014/5451
dc.description.abstract Scanning Electrochemical Microscopy is a tool for imaging and investigate surfaces by meaning of chemical reactivity, electric conductivity, and enzymatic activity. This technique is typical electrochemical cell plus three axis positioner. Positioner allows to measure typical electrochemical measurements, like Cyclic Voltammetry, Chronoamperometry, Impedance Spectroscopy, etc. in the vicinity of substrate and in the chosen position of working electrode. Moreover, this technique can be used as biosensor, e.g. measuring glucose concentration or other parameters, such as lactate and oxygen detection in living and unhealthy cells. In this paper, we present imaging of glucose oxidase by Scanning Electrochemical Microscopy in feedback mode. For experiments, glucose oxidase on the plastic surface was used as well-known enzyme. Imaging of glucose oxidase was performed in buffer with different glucose concentrations and with different redox mediator concentrations. Measurements showed that for higher image resolution glucose concentration has to be about 15-20 mmol•L-1 and redox mediator concentration needs to be lower than 0.2 mmol•L-1. For image processing, Matlab programme was used. Another part of measurements was approaching the ultramicroelectrode to the surface and the current dependence on distance is shown in different concentrations of redox mediator and glucose. en_US
dc.language.iso en en_US
dc.publisher Tehnica UTM en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject glucose oxidase en_US
dc.subject imaging en_US
dc.subject scanning electrochemical microscopy en_US
dc.subject three electrode electrochemical cell en_US
dc.subject ultramicroelectrode en_US
dc.title Imaging Glucose Oxidase by Scanning Electrochemical Microscopy en_US
dc.type Article en_US


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