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Vertically Aligned Graphene Prepared by Photonic Annealing for Ultrasensitive Biosensors

LUE WANG, Wei Zhang Orcid Logo, Siamak Samavat, Davide Deganello Orcid Logo, Vincent Teng Orcid Logo

ACS Applied Materials & Interfaces, Volume: 12, Issue: 31, Pages: 35328 - 35336

Swansea University Authors: LUE WANG, Wei Zhang Orcid Logo, Siamak Samavat, Davide Deganello Orcid Logo, Vincent Teng Orcid Logo

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DOI (Published version): 10.1021/acsami.0c08036

Abstract

Graphene exhibits excellent physical, electronic, and chemical properties that are highly desirable for biosensing applications. However, most graphene biosensors are based on graphene lying flat on a substrate and therefore do not utilize its maximum specific surface area for ultrasensitive detecti...

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Published in: ACS Applied Materials & Interfaces
ISSN: 1944-8244 1944-8252
Published: American Chemical Society (ACS) 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa54703
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spelling 2021-12-02T12:07:40.3391265 v2 54703 2020-07-14 Vertically Aligned Graphene Prepared by Photonic Annealing for Ultrasensitive Biosensors 0ecb776069723decc87717028273a1ed LUE WANG LUE WANG true false 3ddabbb54b2cfa2ea10f590ea7da6520 0000-0003-3129-2918 Wei Zhang Wei Zhang true false ee2cad35dbe40eb78576fdbf6dc90fbd Siamak Samavat Siamak Samavat true false ea38a0040bdfd3875506189e3629b32a 0000-0001-8341-4177 Davide Deganello Davide Deganello true false 98f529f56798da1ba3e6e93d2817c114 0000-0003-4325-8573 Vincent Teng Vincent Teng true false 2020-07-14 Graphene exhibits excellent physical, electronic, and chemical properties that are highly desirable for biosensing applications. However, most graphene biosensors are based on graphene lying flat on a substrate and therefore do not utilize its maximum specific surface area for ultrasensitive detection. Herein, we report the novel use of photonic annealing on a flexographically printed graphene–ethyl cellulose composite to produce vertically aligned graphene (VAG) biosensors for ultrasensitive detection of algal toxins in drinking water. These VAG structures, which maximized the specific surface area of graphene, were formed by partial removal of the polymeric binder upon applying intense pulsed light on the printed graphene. A label-free and low-cost VAG biosensor based on a non-faradaic electrochemical impedance spectroscopy technique was fabricated. The biosensor exhibited a limit of detection of 1.2 ng/L for microcystin-LR in local tap water. Such an ultrasensitive VAG biosensor is suitable for low-cost mass production using an integrated roll-to-roll flexographic printing with rapid photonic annealing technique. Journal Article ACS Applied Materials & Interfaces 12 31 35328 35336 American Chemical Society (ACS) 1944-8244 1944-8252 graphene, flexographic printing, photonic annealing, biosensor, algal toxins, non-faradaic EIS 5 8 2020 2020-08-05 10.1021/acsami.0c08036 COLLEGE NANME COLLEGE CODE Swansea University 2021-12-02T12:07:40.3391265 2020-07-14T10:56:32.0655285 Professional Services ISS - Uncategorised LUE WANG 1 Wei Zhang 0000-0003-3129-2918 2 Siamak Samavat 3 Davide Deganello 0000-0001-8341-4177 4 Vincent Teng 0000-0003-4325-8573 5 54703__17706__6e6fd626bfb545748b4d94761b1306c5.pdf 54703.pdf 2020-07-14T10:59:23.3617765 Output 1490932 application/pdf Accepted Manuscript true 2021-07-13T00:00:00.0000000 true eng
title Vertically Aligned Graphene Prepared by Photonic Annealing for Ultrasensitive Biosensors
spellingShingle Vertically Aligned Graphene Prepared by Photonic Annealing for Ultrasensitive Biosensors
LUE WANG
Wei Zhang
Siamak Samavat
Davide Deganello
Vincent Teng
title_short Vertically Aligned Graphene Prepared by Photonic Annealing for Ultrasensitive Biosensors
title_full Vertically Aligned Graphene Prepared by Photonic Annealing for Ultrasensitive Biosensors
title_fullStr Vertically Aligned Graphene Prepared by Photonic Annealing for Ultrasensitive Biosensors
title_full_unstemmed Vertically Aligned Graphene Prepared by Photonic Annealing for Ultrasensitive Biosensors
title_sort Vertically Aligned Graphene Prepared by Photonic Annealing for Ultrasensitive Biosensors
author_id_str_mv 0ecb776069723decc87717028273a1ed
3ddabbb54b2cfa2ea10f590ea7da6520
ee2cad35dbe40eb78576fdbf6dc90fbd
ea38a0040bdfd3875506189e3629b32a
98f529f56798da1ba3e6e93d2817c114
author_id_fullname_str_mv 0ecb776069723decc87717028273a1ed_***_LUE WANG
3ddabbb54b2cfa2ea10f590ea7da6520_***_Wei Zhang
ee2cad35dbe40eb78576fdbf6dc90fbd_***_Siamak Samavat
ea38a0040bdfd3875506189e3629b32a_***_Davide Deganello
98f529f56798da1ba3e6e93d2817c114_***_Vincent Teng
author LUE WANG
Wei Zhang
Siamak Samavat
Davide Deganello
Vincent Teng
author2 LUE WANG
Wei Zhang
Siamak Samavat
Davide Deganello
Vincent Teng
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container_title ACS Applied Materials & Interfaces
container_volume 12
container_issue 31
container_start_page 35328
publishDate 2020
institution Swansea University
issn 1944-8244
1944-8252
doi_str_mv 10.1021/acsami.0c08036
publisher American Chemical Society (ACS)
college_str Professional Services
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hierarchy_top_title Professional Services
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description Graphene exhibits excellent physical, electronic, and chemical properties that are highly desirable for biosensing applications. However, most graphene biosensors are based on graphene lying flat on a substrate and therefore do not utilize its maximum specific surface area for ultrasensitive detection. Herein, we report the novel use of photonic annealing on a flexographically printed graphene–ethyl cellulose composite to produce vertically aligned graphene (VAG) biosensors for ultrasensitive detection of algal toxins in drinking water. These VAG structures, which maximized the specific surface area of graphene, were formed by partial removal of the polymeric binder upon applying intense pulsed light on the printed graphene. A label-free and low-cost VAG biosensor based on a non-faradaic electrochemical impedance spectroscopy technique was fabricated. The biosensor exhibited a limit of detection of 1.2 ng/L for microcystin-LR in local tap water. Such an ultrasensitive VAG biosensor is suitable for low-cost mass production using an integrated roll-to-roll flexographic printing with rapid photonic annealing technique.
published_date 2020-08-05T04:08:24Z
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