Synthesis of polycrystalline Ta₂O₅ inverse opal photonic crystal powders and their optical characterization
Polycrystalline Ta2O5 inverse opal (IO) photonic crystal powders were synthesized using PMMA colloidal crystals as sacrificial templates. We prepared Ta2O5 IO powders with vibrant structural colors at UV–vis wavelengths. The photonic bandgaps (PBGs) in the Ta2O5 IO powders red-shifted as a function...
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| Language: | English |
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Elsevier
2024-12-01
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| Series: | Open Ceramics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666539524001524 |
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| author | Taiki Maekawa Hiroyuki Maekawa Yuto Ikeda Tomoya Onoe Geoffrey I.N. Waterhouse Kei-ichiro Murai Toshihiro Moriga |
| author_facet | Taiki Maekawa Hiroyuki Maekawa Yuto Ikeda Tomoya Onoe Geoffrey I.N. Waterhouse Kei-ichiro Murai Toshihiro Moriga |
| author_sort | Taiki Maekawa |
| collection | DOAJ |
| description | Polycrystalline Ta2O5 inverse opal (IO) photonic crystal powders were synthesized using PMMA colloidal crystals as sacrificial templates. We prepared Ta2O5 IO powders with vibrant structural colors at UV–vis wavelengths. The photonic bandgaps (PBGs) in the Ta2O5 IO powders red-shifted as a function of both the macropore diameter and the refractive index of the medium filling the macropores. Owing to their polycrystalline structure, the Ta2O5 IO powders exposed PBGs for various FCC facets, making investigation of their optical properties significantly more complex than Ta2O5 IO thin films that preferentially expose only (111) planes as studied previously. Due to the overlap of the PBGs from different FCC facets and the defects that cause light scattering, much of the typical angle-dependent structural color observed in IO thin films was lost in the Ta2O5 IO powders. This study offers new insights into the optical properties of IO powders. |
| format | Article |
| id | doaj-art-2e2016c00d5442eb9559f464095b3b84 |
| institution | Kabale University |
| issn | 2666-5395 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Open Ceramics |
| spelling | doaj-art-2e2016c00d5442eb9559f464095b3b842024-12-08T06:12:57ZengElsevierOpen Ceramics2666-53952024-12-0120100688Synthesis of polycrystalline Ta₂O₅ inverse opal photonic crystal powders and their optical characterizationTaiki Maekawa0Hiroyuki Maekawa1Yuto Ikeda2Tomoya Onoe3Geoffrey I.N. Waterhouse4Kei-ichiro Murai5Toshihiro Moriga6Department of Applied Chemistry Course, Graduate School of Science and Technology for Innovation, Tokushima University, 2-1 Minami-Josanjima, Tokushima, 770-8506, JapanDepartment of Chemistry and Life Science, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama-shi, Kanagawa, 240-8501, JapanDepartment of Applied Chemistry Course, Graduate School of Science and Technology for Innovation, Tokushima University, 2-1 Minami-Josanjima, Tokushima, 770-8506, JapanDepartment of Applied Chemistry Course, Graduate School of Science and Technology for Innovation, Tokushima University, 2-1 Minami-Josanjima, Tokushima, 770-8506, JapanSchool of Chemical Science, The University of Auckland, Private Bag, 92019, Auckland, New ZealandDepartment of Applied Chemistry Course, Graduate School of Science and Technology for Innovation, Tokushima University, 2-1 Minami-Josanjima, Tokushima, 770-8506, JapanDepartment of Applied Chemistry Course, Graduate School of Science and Technology for Innovation, Tokushima University, 2-1 Minami-Josanjima, Tokushima, 770-8506, Japan; Corresponding author.Polycrystalline Ta2O5 inverse opal (IO) photonic crystal powders were synthesized using PMMA colloidal crystals as sacrificial templates. We prepared Ta2O5 IO powders with vibrant structural colors at UV–vis wavelengths. The photonic bandgaps (PBGs) in the Ta2O5 IO powders red-shifted as a function of both the macropore diameter and the refractive index of the medium filling the macropores. Owing to their polycrystalline structure, the Ta2O5 IO powders exposed PBGs for various FCC facets, making investigation of their optical properties significantly more complex than Ta2O5 IO thin films that preferentially expose only (111) planes as studied previously. Due to the overlap of the PBGs from different FCC facets and the defects that cause light scattering, much of the typical angle-dependent structural color observed in IO thin films was lost in the Ta2O5 IO powders. This study offers new insights into the optical properties of IO powders.http://www.sciencedirect.com/science/article/pii/S2666539524001524Inverse opalPhotonic band gapStructural color |
| spellingShingle | Taiki Maekawa Hiroyuki Maekawa Yuto Ikeda Tomoya Onoe Geoffrey I.N. Waterhouse Kei-ichiro Murai Toshihiro Moriga Synthesis of polycrystalline Ta₂O₅ inverse opal photonic crystal powders and their optical characterization Open Ceramics Inverse opal Photonic band gap Structural color |
| title | Synthesis of polycrystalline Ta₂O₅ inverse opal photonic crystal powders and their optical characterization |
| title_full | Synthesis of polycrystalline Ta₂O₅ inverse opal photonic crystal powders and their optical characterization |
| title_fullStr | Synthesis of polycrystalline Ta₂O₅ inverse opal photonic crystal powders and their optical characterization |
| title_full_unstemmed | Synthesis of polycrystalline Ta₂O₅ inverse opal photonic crystal powders and their optical characterization |
| title_short | Synthesis of polycrystalline Ta₂O₅ inverse opal photonic crystal powders and their optical characterization |
| title_sort | synthesis of polycrystalline ta₂o₅ inverse opal photonic crystal powders and their optical characterization |
| topic | Inverse opal Photonic band gap Structural color |
| url | http://www.sciencedirect.com/science/article/pii/S2666539524001524 |
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