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Analysis of Melanin Properties in Radio-frequency Range Based on Distribution of Relaxation Times

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dc.contributor.author ABRAMOV, P.A.
dc.contributor.author ZHUKOV, S.S.
dc.contributor.author BEDRAN, Z.V.
dc.contributor.author GORSHUNOV, B. P.
dc.contributor.author MOTOVILOV, K.A.
dc.date.accessioned 2021-11-17T12:49:19Z
dc.date.available 2021-11-17T12:49:19Z
dc.date.issued 2021
dc.identifier.citation ABRAMOV, P.A., ZHUKOV, S.S., BEDRAN, Z.V., et al. Analysis of Melanin Properties in Radio-frequency Range Based on Distribution of Relaxation Times. In: ICNMBE-2021: the 5th International Conference on Nanotechnologies and Biomedical Engineering, November 3-5, 2021: Program and abstract book. Chişinău, 2021, p. 104-2. ISBN 978-9975-72-592-7. en_US
dc.identifier.isbn 978-9975-72-592-7
dc.identifier.uri http://repository.utm.md/handle/5014/18101
dc.description Only Abstract en_US
dc.description.abstract Being a family of biodegradable materials with natural origin, melanins are widely used for development of model bioelectronic devices. However, the mechanism of their electric conductivity is still a matter of discussions. Current study is devoted to the room temperature impedance measurements of pure and copper-doped synthetic eumelanin at different values of humidity in frequency range 0.1 - 5∙106 Hz. To analyze the obtained impedance spectra, we utilize density relaxation times (DRT) methodology. The performed analysis demonstrates an absence of significant difference in relaxation times in the studied materials. At the lowest frequencies, the doped material has about 30 times lower conductance than pure material. Possible origins of the observed phenomena are discussed in terms of copper ions activity as complexing agent for water molecules and semiquinone groups of melanin. en_US
dc.language.iso en en_US
dc.publisher Universitatea Tehnică a Moldovei 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 melanin en_US
dc.subject biodegradable materials en_US
dc.subject bioelectronic devices en_US
dc.title Analysis of Melanin Properties in Radio-frequency Range Based on Distribution of Relaxation Times en_US
dc.type Article en_US


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