Highly Reproducible, Bio‐Based Slab Photonic Crystals Grown by Diatoms
Abstract Slab photonic crystals (PhCs) are photonic structures used in many modern optical technologies. Fabrication of these components is costly and usually involves eco‐unfriendly methods, requiring modern nanofabrication techniques and cleanroom facilities. This work describes that diatom microa...
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| Format: | Article |
| Language: | English |
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Wiley
2020-05-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.201903726 |
| _version_ | 1818291022885552128 |
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| author | Johannes W. Goessling William P. Wardley Martin Lopez‐Garcia |
| author_facet | Johannes W. Goessling William P. Wardley Martin Lopez‐Garcia |
| author_sort | Johannes W. Goessling |
| collection | DOAJ |
| description | Abstract Slab photonic crystals (PhCs) are photonic structures used in many modern optical technologies. Fabrication of these components is costly and usually involves eco‐unfriendly methods, requiring modern nanofabrication techniques and cleanroom facilities. This work describes that diatom microalgae evolved elaborate and highly reproducible slab PhCs in the girdle, a part of their silicon dioxide exoskeletons. Under natural conditions in water, the girdle of the centric diatom Coscinodiscus granii shows a well‐defined optical pseudogap for modes in the near‐infrared (NIR). This pseudogap shows dispersion toward the visible spectral range when light is incident at larger angles, eventually facilitating in‐plane propagation for modes in the green spectral range. The optical features can be modulated with refractive index contrast. The unit cell period, a critical factor controlling the pseudogap, is highly preserved within individuals of a long‐term cultivated inbred line and between at least four different C. granii cell culture strains tested in this study. Other diatoms present similar unit cell morphologies with various periods. Diatoms thereby offer a wide range of PhC structures, reproducible and equipped with well‐defined properties, possibly covering the entire UV‐vis–NIR spectral range. Diatoms therefore offer an alternative as cost‐effective and environmentally friendly produced photonic materials. |
| first_indexed | 2024-12-13T02:37:28Z |
| format | Article |
| id | doaj.art-eb05edfa8c4b400293be7925b1855aa6 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-13T02:37:28Z |
| publishDate | 2020-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-eb05edfa8c4b400293be7925b1855aa62022-12-22T00:02:22ZengWileyAdvanced Science2198-38442020-05-01710n/an/a10.1002/advs.201903726Highly Reproducible, Bio‐Based Slab Photonic Crystals Grown by DiatomsJohannes W. Goessling0William P. Wardley1Martin Lopez‐Garcia2International Iberian Nanotechnology Laboratory Braga 4715‐330 PortugalInternational Iberian Nanotechnology Laboratory Braga 4715‐330 PortugalInternational Iberian Nanotechnology Laboratory Braga 4715‐330 PortugalAbstract Slab photonic crystals (PhCs) are photonic structures used in many modern optical technologies. Fabrication of these components is costly and usually involves eco‐unfriendly methods, requiring modern nanofabrication techniques and cleanroom facilities. This work describes that diatom microalgae evolved elaborate and highly reproducible slab PhCs in the girdle, a part of their silicon dioxide exoskeletons. Under natural conditions in water, the girdle of the centric diatom Coscinodiscus granii shows a well‐defined optical pseudogap for modes in the near‐infrared (NIR). This pseudogap shows dispersion toward the visible spectral range when light is incident at larger angles, eventually facilitating in‐plane propagation for modes in the green spectral range. The optical features can be modulated with refractive index contrast. The unit cell period, a critical factor controlling the pseudogap, is highly preserved within individuals of a long‐term cultivated inbred line and between at least four different C. granii cell culture strains tested in this study. Other diatoms present similar unit cell morphologies with various periods. Diatoms thereby offer a wide range of PhC structures, reproducible and equipped with well‐defined properties, possibly covering the entire UV‐vis–NIR spectral range. Diatoms therefore offer an alternative as cost‐effective and environmentally friendly produced photonic materials.https://doi.org/10.1002/advs.201903726bioinspirationdiatomsfrustulesnanofabricationphotonic crystal slabs |
| spellingShingle | Johannes W. Goessling William P. Wardley Martin Lopez‐Garcia Highly Reproducible, Bio‐Based Slab Photonic Crystals Grown by Diatoms Advanced Science bioinspiration diatoms frustules nanofabrication photonic crystal slabs |
| title | Highly Reproducible, Bio‐Based Slab Photonic Crystals Grown by Diatoms |
| title_full | Highly Reproducible, Bio‐Based Slab Photonic Crystals Grown by Diatoms |
| title_fullStr | Highly Reproducible, Bio‐Based Slab Photonic Crystals Grown by Diatoms |
| title_full_unstemmed | Highly Reproducible, Bio‐Based Slab Photonic Crystals Grown by Diatoms |
| title_short | Highly Reproducible, Bio‐Based Slab Photonic Crystals Grown by Diatoms |
| title_sort | highly reproducible bio based slab photonic crystals grown by diatoms |
| topic | bioinspiration diatoms frustules nanofabrication photonic crystal slabs |
| url | https://doi.org/10.1002/advs.201903726 |
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