Dynamic selection of visible wavelengths using resonant TiO2 nanostructures
All-dielectric nanoarrays have strong electromagnetic resonances with various interesting applications and are tuned by adjusting their geometrical parameters. However, their optical properties are permanently encoded during fabrication. This study presents robust dynamically tunable all-dielectric...
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| Format: | Article |
| Language: | English |
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De Gruyter
2023-05-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2023-0057 |
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| author | Um Han-Don Choi Deokjae Solanki Amit Huang Emerald Seo Kwanyong Habbal Fawwaz |
| author_facet | Um Han-Don Choi Deokjae Solanki Amit Huang Emerald Seo Kwanyong Habbal Fawwaz |
| author_sort | Um Han-Don |
| collection | DOAJ |
| description | All-dielectric nanoarrays have strong electromagnetic resonances with various interesting applications and are tuned by adjusting their geometrical parameters. However, their optical properties are permanently encoded during fabrication. This study presents robust dynamically tunable all-dielectric nanoresonators for controllable, reversible, and reproducible color filtering. Our design uses an array of TiO2 nanodiscs embedded in a transparent, stretchable polydimethylsiloxane (PDMS) membrane and exhibits a narrow spectral response due to Mie magnetic and electric dipole resonances hybridized with the TiO2 nanodiscs lattice modes. By mechanically stretching the PDMS membrane, the pitch of the TiO2 nanodiscs was increased and the spectral location of the resonances was altered. Additionally, an optically asymmetric structure was fabricated by partially embedding TiO2 nanodiscs in PDMS. Thus, the magnitude of the Rayleigh anomaly diffraction, which could interrupt the dipole resonances, was reduced. Our design has sharp, frequency-tunable resonances in the visible spectrum, and we demonstrated dynamic tunability by stretching the metasurfaces. |
| format | Article |
| id | doaj-art-3194e67232ac4e0a818e67933bce7263 |
| institution | DOAJ |
| issn | 2192-8606 2192-8614 |
| language | English |
| publishDate | 2023-05-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-3194e67232ac4e0a818e67933bce72632025-08-20T02:49:30ZengDe GruyterNanophotonics2192-86062192-86142023-05-0112111995200510.1515/nanoph-2023-0057Dynamic selection of visible wavelengths using resonant TiO2 nanostructuresUm Han-Don0Choi Deokjae1Solanki Amit2Huang Emerald3Seo Kwanyong4Habbal Fawwaz5Department of Chemical Engineering, Kangwon National University, Chuncheon, Gangwon-do24341, Republic of KoreaSchool of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan44919, Republic of KoreaJohn A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02138, USAJohn A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02138, USASchool of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan44919, Republic of KoreaJohn A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02138, USAAll-dielectric nanoarrays have strong electromagnetic resonances with various interesting applications and are tuned by adjusting their geometrical parameters. However, their optical properties are permanently encoded during fabrication. This study presents robust dynamically tunable all-dielectric nanoresonators for controllable, reversible, and reproducible color filtering. Our design uses an array of TiO2 nanodiscs embedded in a transparent, stretchable polydimethylsiloxane (PDMS) membrane and exhibits a narrow spectral response due to Mie magnetic and electric dipole resonances hybridized with the TiO2 nanodiscs lattice modes. By mechanically stretching the PDMS membrane, the pitch of the TiO2 nanodiscs was increased and the spectral location of the resonances was altered. Additionally, an optically asymmetric structure was fabricated by partially embedding TiO2 nanodiscs in PDMS. Thus, the magnitude of the Rayleigh anomaly diffraction, which could interrupt the dipole resonances, was reduced. Our design has sharp, frequency-tunable resonances in the visible spectrum, and we demonstrated dynamic tunability by stretching the metasurfaces.https://doi.org/10.1515/nanoph-2023-0057dielectric metasurfacehybridized modeslattice resonancemagnetic and electric dipole resonancestitanium dioxidetunable metasurface |
| spellingShingle | Um Han-Don Choi Deokjae Solanki Amit Huang Emerald Seo Kwanyong Habbal Fawwaz Dynamic selection of visible wavelengths using resonant TiO2 nanostructures Nanophotonics dielectric metasurface hybridized modes lattice resonance magnetic and electric dipole resonances titanium dioxide tunable metasurface |
| title | Dynamic selection of visible wavelengths using resonant TiO2 nanostructures |
| title_full | Dynamic selection of visible wavelengths using resonant TiO2 nanostructures |
| title_fullStr | Dynamic selection of visible wavelengths using resonant TiO2 nanostructures |
| title_full_unstemmed | Dynamic selection of visible wavelengths using resonant TiO2 nanostructures |
| title_short | Dynamic selection of visible wavelengths using resonant TiO2 nanostructures |
| title_sort | dynamic selection of visible wavelengths using resonant tio2 nanostructures |
| topic | dielectric metasurface hybridized modes lattice resonance magnetic and electric dipole resonances titanium dioxide tunable metasurface |
| url | https://doi.org/10.1515/nanoph-2023-0057 |
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