Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/86969
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dc.contributor.author | Kumeria, T. | - |
dc.contributor.author | Parkinson, L. | - |
dc.contributor.author | Losic, D. | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | Nanoscale Research Letters, 2011; 6(1):634-1-634-7 | - |
dc.identifier.issn | 1931-7573 | - |
dc.identifier.issn | 1556-276X | - |
dc.identifier.uri | http://hdl.handle.net/2440/86969 | - |
dc.description.abstract | This work presents the use of nanoporous anodic aluminium oxide [AAO] for reflective interferometric sensing of volatile sulphur compounds and hydrogen sulphide [H2S] gas. Detection is based on changes of the interference signal from AAO porous layer as a result of specific adsorption of gas molecules with sulphur functional groups on a gold-coated surface. A nanoporous AAO sensing platform with optimised pore diameters (30 nm) and length (4 µm) was fabricated using a two-step anodization process in 0.3 M oxalic, followed by coating with a thin gold film (8 nm). The AAO is assembled in a specially designed microfluidic chip supported with a miniature fibre optic system that is able to measure changes of reflective interference signal (Fabry-Perrot fringes). When the sensor is exposed to a small concentration of H2S gas, the interference signal showed a concentration-dependent wavelength shifting of the Fabry-Perot interference fringe spectrum, as a result of the adsorption of H2S molecules on the Au surface and changes in the refractive index of the AAO. A practical biomedical application of reflectometric interference spectroscopy [RIfS] Au-AAO sensor for malodour measurement was successfully shown. The RIfS method based on a nanoporous AAO platform is simple, easy to miniaturise, inexpensive and has great potential for development of gas sensing devices for a range of medical and environmental applications. | - |
dc.description.statementofresponsibility | Tushar Kumeria, Luke Parkinson and Dusan Losic | - |
dc.language.iso | en | - |
dc.publisher | SpringerOpen | - |
dc.rights | © 2011 Kumeria et al; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. | - |
dc.source.uri | http://dx.doi.org/10.1186/1556-276x-6-634 | - |
dc.subject | nanoporous alumina; reflectometric interference spectroscopy; volatile sulphur compounds; hydrogen sulphide sensor; oral malodour | - |
dc.title | A nanoporous interferometric micro-sensor for biomedical detection of volatile sulphur compounds | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1186/1556-276X-6-634 | - |
dc.relation.grant | http://purl.org/au-research/grants/arc/DP0770930 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Losic, D. [0000-0002-1930-072X] | - |
Appears in Collections: | Aurora harvest 7 Chemical Engineering publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_86969.pdf | Published version | 5.41 MB | Adobe PDF | View/Open |
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