dc.contributor.author |
Maddah, Mohsen |
|
dc.contributor.author |
Unsworth, Charles P |
|
dc.contributor.author |
Gouws, Gideon J |
|
dc.contributor.author |
Plank, Natalie OV |
|
dc.contributor.editor |
Arya, Sandeep |
|
dc.coverage.spatial |
United States |
|
dc.date.accessioned |
2022-07-25T23:59:39Z |
|
dc.date.available |
2022-07-25T23:59:39Z |
|
dc.date.issued |
2022-01 |
|
dc.identifier.citation |
(2022). PLoS One, 17(6), e0270164-. |
|
dc.identifier.issn |
1932-6203 |
|
dc.identifier.uri |
https://hdl.handle.net/2292/60522 |
|
dc.description.abstract |
Microelectrodes are commonly used in electrochemical analysis and biological sensing applications owing to their miniaturised dimensions. It is often desirable to improve the performance of microelectrodes by reducing their electrochemical impedance for increasing the signal-to-noise of the recorded signals. One successful route is to incorporate nanomaterials directly onto microelectrodes; however, it is essential that these fabrication routes are simple and repeatable. In this article, we demonstrate how to synthesise metal encapsulated ZnO nanowires (Cr/Au-ZnO NWs, Ti-ZnO NWs and Pt-ZnO NWs) to reduce the impedance of the microelectrodes. Electrochemical impedance modelling and characterisation of Cr/Au-ZnO NWs, Ti-ZnO NWs and Pt-ZnO NWs are carried out in conjunction with controls of planar Cr/Au and pristine ZnO NWs. It was found that the ZnO NW microelectrodes that were encapsulated with a 10 nm thin layer of Ti or Pt demonstrated the lowest electrochemical impedance of 400 ± 25 kΩ at 1 kHz. The Ti and Pt encapsulated ZnO NWs have the potential to offer an alternative microelectrode modality that could be attractive to electrochemical and biological sensing applications. |
|
dc.format.medium |
Electronic-eCollection |
|
dc.language |
eng |
|
dc.publisher |
Public Library of Science (PLoS) |
|
dc.relation.ispartofseries |
PloS one |
|
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
|
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
|
dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
|
dc.subject |
Zinc Oxide |
|
dc.subject |
Microelectrodes |
|
dc.subject |
Electric Impedance |
|
dc.subject |
Nanostructures |
|
dc.subject |
Nanowires |
|
dc.title |
Synthesis of encapsulated ZnO nanowires provide low impedance alternatives for microelectrodes. |
|
dc.type |
Journal Article |
|
dc.identifier.doi |
10.1371/journal.pone.0270164 |
|
pubs.issue |
6 |
|
pubs.begin-page |
e0270164 |
|
pubs.volume |
17 |
|
dc.date.updated |
2022-06-27T12:30:34Z |
|
dc.rights.holder |
Copyright: The authors |
en |
dc.identifier.pmid |
35709181 (pubmed) |
|
pubs.author-url |
https://www.ncbi.nlm.nih.gov/pubmed/35709181 |
|
pubs.publication-status |
Published |
|
dc.rights.accessrights |
http://purl.org/eprint/accessRights/OpenAccess |
en |
pubs.subtype |
Journal Article |
|
pubs.elements-id |
908648 |
|
pubs.org-id |
Engineering |
|
pubs.org-id |
Engineering Science |
|
dc.identifier.eissn |
1932-6203 |
|
dc.identifier.pii |
PONE-D-22-07435 |
|
pubs.record-created-at-source-date |
2022-06-28 |
|
pubs.online-publication-date |
2022-06-16 |
|