Microelectrode arrays with active-area geometries defined by spatial light modulation
© 2020 Elsevier Microelectrode arrays form the basis of electrochemical sensing devices because of their unique properties, such as enhanced mass transport and steady-state diffusion currents. However, they demand a predefined and rigid geometry, and require a connecting pad for each element of...
| Main Authors: | , , , |
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| Format: | Journal Article |
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2020
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| Online Access: | http://purl.org/au-research/grants/arc/DP190100735 http://hdl.handle.net/20.500.11937/80748 |
| _version_ | 1848764264589819904 |
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| author | Vogel, Yan Molina, A. Gonzalez, J. Ciampi, Simone |
| author_facet | Vogel, Yan Molina, A. Gonzalez, J. Ciampi, Simone |
| author_sort | Vogel, Yan |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2020 Elsevier
Microelectrode arrays form the basis of electrochemical sensing devices because of their unique properties, such as enhanced mass transport and steady-state diffusion currents. However, they demand a predefined and rigid geometry, and require a connecting pad for each element of the array. Here it is reported the formation of microelectrode arrays whose geometry is defined by the shape of a light pattern projected on an unstructured silicon electrode. Spatiotemporally resolved fluxes of charge carriers are used to confine a model electrochemical reaction only to the illuminated areas. Using spatial light modulators, microelectrode geometry is adjusted instantaneously, at will, on a homogeneous semiconductor electrode carrying a single electrical connection. By developing a theoretical model to analyse the current−potential data, it is revealed within which limits spatial light modulation can be used to enhance, on silicon, the mass transport of a diffuse redox system. |
| first_indexed | 2025-11-14T11:16:36Z |
| format | Journal Article |
| id | curtin-20.500.11937-80748 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:16:36Z |
| publishDate | 2020 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-807482023-06-06T05:18:30Z Microelectrode arrays with active-area geometries defined by spatial light modulation Vogel, Yan Molina, A. Gonzalez, J. Ciampi, Simone © 2020 Elsevier Microelectrode arrays form the basis of electrochemical sensing devices because of their unique properties, such as enhanced mass transport and steady-state diffusion currents. However, they demand a predefined and rigid geometry, and require a connecting pad for each element of the array. Here it is reported the formation of microelectrode arrays whose geometry is defined by the shape of a light pattern projected on an unstructured silicon electrode. Spatiotemporally resolved fluxes of charge carriers are used to confine a model electrochemical reaction only to the illuminated areas. Using spatial light modulators, microelectrode geometry is adjusted instantaneously, at will, on a homogeneous semiconductor electrode carrying a single electrical connection. By developing a theoretical model to analyse the current−potential data, it is revealed within which limits spatial light modulation can be used to enhance, on silicon, the mass transport of a diffuse redox system. 2020 Journal Article http://hdl.handle.net/20.500.11937/80748 10.1016/j.electacta.2020.136849 http://purl.org/au-research/grants/arc/DP190100735 http://purl.org/au-research/grants/arc/FT190100148 http://creativecommons.org/licenses/by-nc-nd/4.0/ fulltext |
| spellingShingle | Vogel, Yan Molina, A. Gonzalez, J. Ciampi, Simone Microelectrode arrays with active-area geometries defined by spatial light modulation |
| title | Microelectrode arrays with active-area geometries defined by spatial light modulation |
| title_full | Microelectrode arrays with active-area geometries defined by spatial light modulation |
| title_fullStr | Microelectrode arrays with active-area geometries defined by spatial light modulation |
| title_full_unstemmed | Microelectrode arrays with active-area geometries defined by spatial light modulation |
| title_short | Microelectrode arrays with active-area geometries defined by spatial light modulation |
| title_sort | microelectrode arrays with active-area geometries defined by spatial light modulation |
| url | http://purl.org/au-research/grants/arc/DP190100735 http://purl.org/au-research/grants/arc/DP190100735 http://hdl.handle.net/20.500.11937/80748 |