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Nanotextured Surface on Flexographic Printed ZnO Thin Films for Low-Cost Non-Faradaic Biosensors
,
Richard J. Stanton,
Vincent Teng
ACS Applied Materials & Interfaces, Volume: 8, Issue: 49, Pages: 33802 - 33810
Swansea University Authors:
Jonathan Lloyd, Siamak Samavat, Davide Deganello , Vincent Teng
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DOI (Published version): 10.1021/acsami.6b11640
Abstract
In this work, the formation of a nanotextured surface is reported on flexographic printed zinc oxide thin films which provide an excellent platform for low-cost, highly sensitive biosensing applications. The ability to produce nanotextured surfaces using a high throughput, roll-to-roll production me...
| Published in: | ACS Applied Materials & Interfaces |
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| ISSN: | 1944-8244 1944-8252 |
| Published: |
2016
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa31228 |
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| Abstract: |
In this work, the formation of a nanotextured surface is reported on flexographic printed zinc oxide thin films which provide an excellent platform for low-cost, highly sensitive biosensing applications. The ability to produce nanotextured surfaces using a high throughput, roll-to-roll production method directly from precursor ink without any complicated processes is commercially attractive for biosensors that are suitable for large scale screening of diseases at low cost. The zinc oxide thin film was formed by printing a zinc acetate precursor ink solution and annealing at 300C. An intricate nanotexturing of the film surface was achieved through 150C drying process between multiple prints. These surface nanostructures were found to be in the range of 100 to 700 nm in length with a width of 58 18 nm and a height of between 20 and 60 nm. Such structures significantly increase the surface area to volume ratio of the biosensing material which is essential to high sensitivity detection of diseases. Non-faradaic electrochemical impedance spectroscopy measurements were carried out to detect the pp65-antigen of the human cytomegalovirus using the printed device, which has a low limit of detection of 5 pg/ml. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
49 |
| Start Page: |
33802 |
| End Page: |
33810 |