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Development and testing of ultrathin nanoporous silicon for haemodialysis, and an investigation into the silver-catalysed formation of silicon nanorings / THOMAS CHESS

Swansea University Author: THOMAS CHESS

  • E-Thesis – open access under embargo until: 7th February 2029

DOI (Published version): 10.23889/SUthesis.65862

Abstract

Haemodialysis is a multi billion dollar industry that uses hollow fibre tube dialysers to purify the blood of patients su˙ering from kidney failure. The fundamental technology of these hollow fibres has not changed since the 1960s, and this work investigates ways of producing porous silicon that cou...

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Published: Swansea, Wales, UK 2024
Institution: Swansea University
Degree level: Doctoral
Degree name: Ph.D
Supervisor: Guy, Owen J. ; Blayney, Gareth J.
URI: https://cronfa.swan.ac.uk/Record/cronfa65862
first_indexed 2024-03-19T10:17:10Z
last_indexed 2024-11-25T14:17:01Z
id cronfa65862
recordtype RisThesis
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spelling 2024-03-20T14:02:02.1692346 v2 65862 2024-03-19 Development and testing of ultrathin nanoporous silicon for haemodialysis, and an investigation into the silver-catalysed formation of silicon nanorings 305a37170d2bd8d85ebb216057f5859a THOMAS CHESS THOMAS CHESS true false 2024-03-19 Haemodialysis is a multi billion dollar industry that uses hollow fibre tube dialysers to purify the blood of patients su˙ering from kidney failure. The fundamental technology of these hollow fibres has not changed since the 1960s, and this work investigates ways of producing porous silicon that could replace them as the major haemodialysis membrane. Utilising common semiconductor manufacturing techniques, a process was devised for lifting-o˙ amorphous silicon sheets with nanometre scale pores, this novel process is cheap, high throughput and scalable. Silicon membranes between 90 and 600 nanometres thick were successfully lifted o˙, but any thickness is possible. Pore diameters in the 10 to 50 nanometre range were achieved and are also tunable, although their spacing is currently not. A low-cost flow cell was created that could compare the di˙usive and ultrafiltration properties of flat membranes and commercial hollow fibre-tube dialysers. It monitored the size-based separation of 10 and 100 nanometre gold nanoparticles using their characteristic UV-vis absorbances, though only concentration of nanoparticles was seen using a dialyser, and limited separation using a flat membrane. Finally, during development of the nanoporous silicon manufacturing process it was discovered sub 100 nanometre ring structures could be easily formed on silicon in a range of sizes. A thorough investigation into their properties and silver-dependent formation was carried out. This work establishes a robust foundation for future research in silicon membrane manufacturing, membrane testing with gold nanoparticles, and silicon nanoring formation. E-Thesis Swansea, Wales, UK Nanotechnology, haemodialysis, silicon, filtration, nanorings 19 3 2024 2024-03-19 10.23889/SUthesis.65862 "Due to Embargo and/or Third Party Copyright restrictions, this thesis is not available via this service." COLLEGE NANME COLLEGE CODE Swansea University Guy, Owen J. ; Blayney, Gareth J. Doctoral Ph.D KESS2 2024-03-20T14:02:02.1692346 2024-03-19T10:14:03.8876644 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering THOMAS CHESS 1 Under embargo Under embargo 2024-03-19T11:32:20.3795904 Output 11992056 application/pdf E-Thesis – open access true 2029-02-07T00:00:00.0000000 Copyright: The author, Thomas Chess, 2024. true eng
title Development and testing of ultrathin nanoporous silicon for haemodialysis, and an investigation into the silver-catalysed formation of silicon nanorings
spellingShingle Development and testing of ultrathin nanoporous silicon for haemodialysis, and an investigation into the silver-catalysed formation of silicon nanorings
THOMAS CHESS
title_short Development and testing of ultrathin nanoporous silicon for haemodialysis, and an investigation into the silver-catalysed formation of silicon nanorings
title_full Development and testing of ultrathin nanoporous silicon for haemodialysis, and an investigation into the silver-catalysed formation of silicon nanorings
title_fullStr Development and testing of ultrathin nanoporous silicon for haemodialysis, and an investigation into the silver-catalysed formation of silicon nanorings
title_full_unstemmed Development and testing of ultrathin nanoporous silicon for haemodialysis, and an investigation into the silver-catalysed formation of silicon nanorings
title_sort Development and testing of ultrathin nanoporous silicon for haemodialysis, and an investigation into the silver-catalysed formation of silicon nanorings
author_id_str_mv 305a37170d2bd8d85ebb216057f5859a
author_id_fullname_str_mv 305a37170d2bd8d85ebb216057f5859a_***_THOMAS CHESS
author THOMAS CHESS
author2 THOMAS CHESS
format E-Thesis
publishDate 2024
institution Swansea University
doi_str_mv 10.23889/SUthesis.65862
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 Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering
document_store_str 0
active_str 0
description Haemodialysis is a multi billion dollar industry that uses hollow fibre tube dialysers to purify the blood of patients su˙ering from kidney failure. The fundamental technology of these hollow fibres has not changed since the 1960s, and this work investigates ways of producing porous silicon that could replace them as the major haemodialysis membrane. Utilising common semiconductor manufacturing techniques, a process was devised for lifting-o˙ amorphous silicon sheets with nanometre scale pores, this novel process is cheap, high throughput and scalable. Silicon membranes between 90 and 600 nanometres thick were successfully lifted o˙, but any thickness is possible. Pore diameters in the 10 to 50 nanometre range were achieved and are also tunable, although their spacing is currently not. A low-cost flow cell was created that could compare the di˙usive and ultrafiltration properties of flat membranes and commercial hollow fibre-tube dialysers. It monitored the size-based separation of 10 and 100 nanometre gold nanoparticles using their characteristic UV-vis absorbances, though only concentration of nanoparticles was seen using a dialyser, and limited separation using a flat membrane. Finally, during development of the nanoporous silicon manufacturing process it was discovered sub 100 nanometre ring structures could be easily formed on silicon in a range of sizes. A thorough investigation into their properties and silver-dependent formation was carried out. This work establishes a robust foundation for future research in silicon membrane manufacturing, membrane testing with gold nanoparticles, and silicon nanoring formation.
published_date 2024-03-19T05:19:13Z
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score 11.096254

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