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Silver nanowire/chitosan nanocomposite dry electrodes for electrocardiogram
Date
2019
Author
Soydan, Alper Kaan
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Nanocomposites of chitosan and silver nanowires (Ag NWs) were fabricated and their mechanical, thermal, electrical and antibacterial properties were investigated. A simple solvent casting method was used for the fabrication of nanocomposites with different Ag NW loadings ranging from 1 wt.% to 40 wt.%. Nanowires showed excellent dispersion in chitosan matrix. Antibacterial properties of the Ag NW/ chitosan nanocomposites were investigated against different bacteria strains of American type culture Collection (ATCC) using conventional microbiological methods. Prepared nanocomposites were found to have high antibacterial affect against Staphylococcus aureus, (ATCC #25923), Escherichia coli (ATCC#25922), Bacillus cereus (ATCC#14603) and Candida albicans (ATCC #90028) strains. Following the demonstration of antibacterial activity, fabricated nanocomposites were used as in-vitro electrocardiogram (ECG) electrodes. ECG measurement results showed that higher nanowire loadings within the nanocomposites have better performance in terms of recording useful ECG signals. Results presented herein showed that the Ag NW/ chitosan nanocomposites have a very high potential to be used as dry electrodes for ECG and offers simple and easy fabrication.
Subject Keywords
Electrocardiography
,
Chitosan Ag NW
,
ECG Electrode
,
Electrical Characterization
,
Thermal Characterization
,
Antibacterial Performance.
URI
http://etd.lib.metu.edu.tr/upload/12625256/index.pdf
https://hdl.handle.net/11511/45648
Collections
Graduate School of Natural and Applied Sciences, Thesis
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A. K. Soydan, “Silver nanowire/chitosan nanocomposite dry electrodes for electrocardiogram,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Micro and Nanotechnology., Middle East Technical University, 2019.