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Enhanced thermal sensitivity in single metal thermocouple: significance of thickness-engineering of the metal layers

Rafiq Mulla, Charlie Dunnill Orcid Logo

Engineering Research Express, Volume: 3, Issue: 3, Start page: 035015

Swansea University Authors: Rafiq Mulla, Charlie Dunnill Orcid Logo

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DOI (Published version): 10.1088/2631-8695/ac144f

Abstract

Single metal thermocouples (SMTs) have recently been developed with a new design concept of width-engineering of metal segments. In such designs, two segments of different micro-width are formed to obtain different levels of Seebeck effects. The variations in the Seebeck effect achieved from dissimi...

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Published in: Engineering Research Express
ISSN: 2631-8695
Published: IOP Publishing 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa57691
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first_indexed 2021-08-26T08:15:36Z
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spelling 2022-07-13T13:43:10.2382105 v2 57691 2021-08-26 Enhanced thermal sensitivity in single metal thermocouple: significance of thickness-engineering of the metal layers 1a1c32917f31df48a473a4f846068035 Rafiq Mulla Rafiq Mulla true false 0c4af8958eda0d2e914a5edc3210cd9e 0000-0003-4052-6931 Charlie Dunnill Charlie Dunnill true false 2021-08-26 CHEG Single metal thermocouples (SMTs) have recently been developed with a new design concept of width-engineering of metal segments. In such designs, two segments of different micro-width are formed to obtain different levels of Seebeck effects. The variations in the Seebeck effect achieved from dissimilar segment width are small. In addition, the fabrication of such micro-width patterns requires special fabrication facilities such as photolithography or electron-beam lithography. In this paper, an alternative method is presented that has the potential to give high thermal sensing SMTs and requires no sophisticated facilities to fabricate. The method is based on thickness-engineering instead of width-engineering, and thus devices can be obtained from commonly available thin film deposition techniques. Constructing better thermal sensing SMTs is possible with this approach as thickness can be easily and conveniently varied down to nanoscale range which is necessary to achieve significant changes in the Seebeck effects from effectively utilizing size effects. As a result, a high thermal sensing bismuth based-SMT has been fabricated with a sensitivity of as high as 31 μV K−1, one of the highest values reported for SMTs. It is straightforward, more convenient over width-engineering approach and thus SMTs can be easily developed. Journal Article Engineering Research Express 3 3 035015 IOP Publishing 2631-8695 30 7 2021 2021-07-30 10.1088/2631-8695/ac144f All data that support the findings of this study are included within the article (and any supplementary files). COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University SU Library paid the OA fee (TA Institutional Deal) Welsh Government (EU European Regional Development Fund) for funding the RICE (Reducing Industrial Carbon Emission) project (Grant Number: 81435), EPSRC (EP/M028267/1), the European Regional Development Fund through the Welsh Government (80708), and the Ser Solar project via Welsh Government. 2022-07-13T13:43:10.2382105 2021-08-26T09:13:44.0128324 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Rafiq Mulla 1 Charlie Dunnill 0000-0003-4052-6931 2 57691__20702__dfaa0f6294374647b77fa726df35d044.pdf 57691.pdf 2021-08-26T09:15:15.0506927 Output 1551942 application/pdf Version of Record true © 2021 The Author(s). Released under the terms of the Creative Commons Attribution 4.0 licence true eng http://creativecommons.org/licenses/by/4.0
title Enhanced thermal sensitivity in single metal thermocouple: significance of thickness-engineering of the metal layers
spellingShingle Enhanced thermal sensitivity in single metal thermocouple: significance of thickness-engineering of the metal layers
Rafiq Mulla
Charlie Dunnill
title_short Enhanced thermal sensitivity in single metal thermocouple: significance of thickness-engineering of the metal layers
title_full Enhanced thermal sensitivity in single metal thermocouple: significance of thickness-engineering of the metal layers
title_fullStr Enhanced thermal sensitivity in single metal thermocouple: significance of thickness-engineering of the metal layers
title_full_unstemmed Enhanced thermal sensitivity in single metal thermocouple: significance of thickness-engineering of the metal layers
title_sort Enhanced thermal sensitivity in single metal thermocouple: significance of thickness-engineering of the metal layers
author_id_str_mv 1a1c32917f31df48a473a4f846068035
0c4af8958eda0d2e914a5edc3210cd9e
author_id_fullname_str_mv 1a1c32917f31df48a473a4f846068035_***_Rafiq Mulla
0c4af8958eda0d2e914a5edc3210cd9e_***_Charlie Dunnill
author Rafiq Mulla
Charlie Dunnill
author2 Rafiq Mulla
Charlie Dunnill
format Journal article
container_title Engineering Research Express
container_volume 3
container_issue 3
container_start_page 035015
publishDate 2021
institution Swansea University
issn 2631-8695
doi_str_mv 10.1088/2631-8695/ac144f
publisher IOP Publishing
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
document_store_str 1
active_str 0
description Single metal thermocouples (SMTs) have recently been developed with a new design concept of width-engineering of metal segments. In such designs, two segments of different micro-width are formed to obtain different levels of Seebeck effects. The variations in the Seebeck effect achieved from dissimilar segment width are small. In addition, the fabrication of such micro-width patterns requires special fabrication facilities such as photolithography or electron-beam lithography. In this paper, an alternative method is presented that has the potential to give high thermal sensing SMTs and requires no sophisticated facilities to fabricate. The method is based on thickness-engineering instead of width-engineering, and thus devices can be obtained from commonly available thin film deposition techniques. Constructing better thermal sensing SMTs is possible with this approach as thickness can be easily and conveniently varied down to nanoscale range which is necessary to achieve significant changes in the Seebeck effects from effectively utilizing size effects. As a result, a high thermal sensing bismuth based-SMT has been fabricated with a sensitivity of as high as 31 μV K−1, one of the highest values reported for SMTs. It is straightforward, more convenient over width-engineering approach and thus SMTs can be easily developed.
published_date 2021-07-30T04:13:37Z
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score 11.036116

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