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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| 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 |
| Sumario: | 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. |
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