Active control of thermal conductivity in mesophases and complex oxides

This PhD thesis explores the development of thermal switches: materials whose thermal conductivity can be precisely and reversibly controlled on demand by the application of an external stimulus. Four strategies have been investigated, based on a different physical mechanism and material platform: p...

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Detalles Bibliográficos
Autor: Varela Domínguez, Noa
Tipo de recurso: tesis doctoral
Fecha de publicación:2025
País:España
Institución:Universidad de Santiago de Compostela (USC)
Repositorio:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
Idioma:inglés
OAI Identifier:oai:minerva.usc.gal:10347/44338
Acceso en línea:https://hdl.handle.net/10347/44338
Access Level:acceso abierto
Palabra clave:thermal transport
thermal switches
solid-state chemistry
thin films
mesophases
221033 Fenómenos de transporte
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spelling Active control of thermal conductivity in mesophases and complex oxidesVarela Domínguez, Noathermal transportthermal switchessolid-state chemistrythin filmsmesophases221033 Fenómenos de transporteThis PhD thesis explores the development of thermal switches: materials whose thermal conductivity can be precisely and reversibly controlled on demand by the application of an external stimulus. Four strategies have been investigated, based on a different physical mechanism and material platform: photoisomerization in azobenzene-based mesophases, topotactic redox transformations in (Ca,Sr)FeO3 thin films, electric-field driven oxygen vacancy engineering in charge-transfer oxides, and polar topology manipulation in PbTiO3/SrTiO3 superlattices. The results establish heat transport as a functional, tunable property, opening pathways for programmable thermal materials in advanced technologies.Rivadulla Fernández, José FranciscoGiménez López, María del CarmenUniversidade de Santiago de Compostela. Escola de Doutoramento Internacional (EDIUS)20252025-01-0120252025-01-01doctoral thesishttp://purl.org/coar/resource_type/c_db06info:eu-repo/semantics/doctoralThesisapplication/pdfhttps://hdl.handle.net/10347/44338reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostelainstname:Universidad de Santiago de Compostela (USC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:minerva.usc.gal:10347/443382026-06-15T12:47:27Z
dc.title.none.fl_str_mv Active control of thermal conductivity in mesophases and complex oxides
title Active control of thermal conductivity in mesophases and complex oxides
spellingShingle Active control of thermal conductivity in mesophases and complex oxides
Varela Domínguez, Noa
thermal transport
thermal switches
solid-state chemistry
thin films
mesophases
221033 Fenómenos de transporte
title_short Active control of thermal conductivity in mesophases and complex oxides
title_full Active control of thermal conductivity in mesophases and complex oxides
title_fullStr Active control of thermal conductivity in mesophases and complex oxides
title_full_unstemmed Active control of thermal conductivity in mesophases and complex oxides
title_sort Active control of thermal conductivity in mesophases and complex oxides
dc.creator.none.fl_str_mv Varela Domínguez, Noa
author Varela Domínguez, Noa
author_facet Varela Domínguez, Noa
author_role author
dc.contributor.none.fl_str_mv Rivadulla Fernández, José Francisco
Giménez López, María del Carmen
Universidade de Santiago de Compostela. Escola de Doutoramento Internacional (EDIUS)
dc.subject.none.fl_str_mv thermal transport
thermal switches
solid-state chemistry
thin films
mesophases
221033 Fenómenos de transporte
topic thermal transport
thermal switches
solid-state chemistry
thin films
mesophases
221033 Fenómenos de transporte
description This PhD thesis explores the development of thermal switches: materials whose thermal conductivity can be precisely and reversibly controlled on demand by the application of an external stimulus. Four strategies have been investigated, based on a different physical mechanism and material platform: photoisomerization in azobenzene-based mesophases, topotactic redox transformations in (Ca,Sr)FeO3 thin films, electric-field driven oxygen vacancy engineering in charge-transfer oxides, and polar topology manipulation in PbTiO3/SrTiO3 superlattices. The results establish heat transport as a functional, tunable property, opening pathways for programmable thermal materials in advanced technologies.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-01-01
2025
2025-01-01
dc.type.none.fl_str_mv doctoral thesis
http://purl.org/coar/resource_type/c_db06
dc.type.openaire.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/10347/44338
url https://hdl.handle.net/10347/44338
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
instname:Universidad de Santiago de Compostela (USC)
instname_str Universidad de Santiago de Compostela (USC)
reponame_str Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
collection Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
repository.name.fl_str_mv
repository.mail.fl_str_mv
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