{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["11(17)"],"submitter":["John J"],"pubmed_abstract":["We theoretically and experimentally demonstrate a strong and tunable optical anisotropy in epitaxially-grown VO<sub>2</sub> thin films. Using a combination of temperature-dependent X-ray diffraction, spectroscopic ellipsometry measurements and first-principle calculations, we reveal that these VO<sub>2</sub> thin films present an ultra-large birefringence (Δ<i>n</i> > 0.9). Furthermore, leveraging the insulator-to-metal transition of VO<sub>2</sub>, we demonstrate a dynamic reconfiguration of optical properties from birefringent to hyperbolic, which are two distinctive regimes of anisotropy. Such a naturally birefringent and dynamically switchable platform paves the way for multi-functional devices exploiting tunable anisotropy and hyperbolic dispersion."],"journal":["Nanophotonics (Berlin, Germany)"],"pagination":["3913-3922"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11501475"],"repository":["biostudies-literature"],"pubmed_title":["Tunable optical anisotropy in epitaxial phase-change VO&lt;sub&gt;2&lt;/sub&gt; thin films."],"pmcid":["PMC11501475"],"pubmed_authors":["Slassi A","Cueff S","Ramanathan S","Orobtchouk R","John J","Bachelet R","Calzolari A","Penuelas J","Sun Y","Sun J","Saint-Girons G"],"additional_accession":[]},"is_claimable":false,"name":"Tunable optical anisotropy in epitaxial phase-change VO&lt;sub&gt;2&lt;/sub&gt; thin films.","description":"We theoretically and experimentally demonstrate a strong and tunable optical anisotropy in epitaxially-grown VO<sub>2</sub> thin films. Using a combination of temperature-dependent X-ray diffraction, spectroscopic ellipsometry measurements and first-principle calculations, we reveal that these VO<sub>2</sub> thin films present an ultra-large birefringence (Δ<i>n</i> > 0.9). Furthermore, leveraging the insulator-to-metal transition of VO<sub>2</sub>, we demonstrate a dynamic reconfiguration of optical properties from birefringent to hyperbolic, which are two distinctive regimes of anisotropy. Such a naturally birefringent and dynamically switchable platform paves the way for multi-functional devices exploiting tunable anisotropy and hyperbolic dispersion.","dates":{"release":"2022-01-01T00:00:00Z","publication":"2022 Sep","modification":"2025-04-04T00:46:18.29Z","creation":"2025-04-04T00:46:18.29Z"},"accession":"S-EPMC11501475","cross_references":{"pubmed":["39635168"],"doi":["10.1515/nanoph-2022-0153"]}}