Nickel nanowire synthesis for next-generation transparent conductors
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/21757 |
Resumo: | Nowadays, transparent and touch-related interaction are two significant trends in information and communication technologies (ICTs). For this reason new alternatives to indium-tin oxide (ITO) are being developed, with this work focusing on one possible approach, based on nickel nanowire networks. These are interesting because of its characteristic high conductivity derived from the metal properties, while having the advantage of the chosen material existing with a large abundance, with much lower cost than materials like indium or silver. Several methods for producing these structures were studied. Initially by an hydrothermal process that proved necessary to have a good control of the applied magnetic field, allowing to obtain nanowires with diameters of 800nm but with a wide variety of lengths. To assure a better process control another route was explored, based on electrodeposition using a mold, varying the reaction time, the applied current and also the electrolyte concentration. For this mold was firstly used an anodized alumina membrane that revealed to require a good etching process of the contact in the mold for a good separation to occur between this and the final product. This resulted in nanowires with about 200 nm diameter and lengths around 60 μm. Finally, alternative materials were used for molds, such as wax, polydimethilsiloxane (PDMS) and epoxi-based photoresist (SU-8), but all resulted in low aspect ratio structures. This work opens pathways for low cost conductive nanostructures, with applications ranging from transparent conductors to 3D interconnectivity in integrated circuits. |
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Nickel nanowire synthesis for next-generation transparent conductorsNickel nanowiresHydrothermal synthesisElectrodepositionAnodized alumina membraneDomínio/Área Científica::Engenharia e Tecnologia::Engenharia dos MateriaisNowadays, transparent and touch-related interaction are two significant trends in information and communication technologies (ICTs). For this reason new alternatives to indium-tin oxide (ITO) are being developed, with this work focusing on one possible approach, based on nickel nanowire networks. These are interesting because of its characteristic high conductivity derived from the metal properties, while having the advantage of the chosen material existing with a large abundance, with much lower cost than materials like indium or silver. Several methods for producing these structures were studied. Initially by an hydrothermal process that proved necessary to have a good control of the applied magnetic field, allowing to obtain nanowires with diameters of 800nm but with a wide variety of lengths. To assure a better process control another route was explored, based on electrodeposition using a mold, varying the reaction time, the applied current and also the electrolyte concentration. For this mold was firstly used an anodized alumina membrane that revealed to require a good etching process of the contact in the mold for a good separation to occur between this and the final product. This resulted in nanowires with about 200 nm diameter and lengths around 60 μm. Finally, alternative materials were used for molds, such as wax, polydimethilsiloxane (PDMS) and epoxi-based photoresist (SU-8), but all resulted in low aspect ratio structures. This work opens pathways for low cost conductive nanostructures, with applications ranging from transparent conductors to 3D interconnectivity in integrated circuits.Barquinha, PedroRUNDomingos, Ismael Duarte2017-06-28T12:03:52Z2016-092017-062016-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/21757enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T04:08:23Zoai:run.unl.pt:10362/21757Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:26:52.025547Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Nickel nanowire synthesis for next-generation transparent conductors |
title |
Nickel nanowire synthesis for next-generation transparent conductors |
spellingShingle |
Nickel nanowire synthesis for next-generation transparent conductors Domingos, Ismael Duarte Nickel nanowires Hydrothermal synthesis Electrodeposition Anodized alumina membrane Domínio/Área Científica::Engenharia e Tecnologia::Engenharia dos Materiais |
title_short |
Nickel nanowire synthesis for next-generation transparent conductors |
title_full |
Nickel nanowire synthesis for next-generation transparent conductors |
title_fullStr |
Nickel nanowire synthesis for next-generation transparent conductors |
title_full_unstemmed |
Nickel nanowire synthesis for next-generation transparent conductors |
title_sort |
Nickel nanowire synthesis for next-generation transparent conductors |
author |
Domingos, Ismael Duarte |
author_facet |
Domingos, Ismael Duarte |
author_role |
author |
dc.contributor.none.fl_str_mv |
Barquinha, Pedro RUN |
dc.contributor.author.fl_str_mv |
Domingos, Ismael Duarte |
dc.subject.por.fl_str_mv |
Nickel nanowires Hydrothermal synthesis Electrodeposition Anodized alumina membrane Domínio/Área Científica::Engenharia e Tecnologia::Engenharia dos Materiais |
topic |
Nickel nanowires Hydrothermal synthesis Electrodeposition Anodized alumina membrane Domínio/Área Científica::Engenharia e Tecnologia::Engenharia dos Materiais |
description |
Nowadays, transparent and touch-related interaction are two significant trends in information and communication technologies (ICTs). For this reason new alternatives to indium-tin oxide (ITO) are being developed, with this work focusing on one possible approach, based on nickel nanowire networks. These are interesting because of its characteristic high conductivity derived from the metal properties, while having the advantage of the chosen material existing with a large abundance, with much lower cost than materials like indium or silver. Several methods for producing these structures were studied. Initially by an hydrothermal process that proved necessary to have a good control of the applied magnetic field, allowing to obtain nanowires with diameters of 800nm but with a wide variety of lengths. To assure a better process control another route was explored, based on electrodeposition using a mold, varying the reaction time, the applied current and also the electrolyte concentration. For this mold was firstly used an anodized alumina membrane that revealed to require a good etching process of the contact in the mold for a good separation to occur between this and the final product. This resulted in nanowires with about 200 nm diameter and lengths around 60 μm. Finally, alternative materials were used for molds, such as wax, polydimethilsiloxane (PDMS) and epoxi-based photoresist (SU-8), but all resulted in low aspect ratio structures. This work opens pathways for low cost conductive nanostructures, with applications ranging from transparent conductors to 3D interconnectivity in integrated circuits. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-09 2016-09-01T00:00:00Z 2017-06-28T12:03:52Z 2017-06 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10362/21757 |
url |
http://hdl.handle.net/10362/21757 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799137898263478272 |