Photonic paper: Multiscale assembly of reflective cellulose sheets in Lunaria annua
© 2020 American Association for the Advancement of Science. All rights reserved. Bright, iridescent colors observed in nature are often caused by light interference within nanoscale periodic lattices, inspiring numerous strategies for coloration devoid of inorganic pigments. Here, we describe and ch...
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| Format: | Article |
| Language: | English |
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American Association for the Advancement of Science (AAAS)
2021
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| Online Access: | https://hdl.handle.net/1721.1/133033 |
| _version_ | 1811079986739675136 |
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| author | Guidetti, G Sun, H Marelli, B Omenetto, FG |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Guidetti, G Sun, H Marelli, B Omenetto, FG |
| author_sort | Guidetti, G |
| collection | MIT |
| description | © 2020 American Association for the Advancement of Science. All rights reserved. Bright, iridescent colors observed in nature are often caused by light interference within nanoscale periodic lattices, inspiring numerous strategies for coloration devoid of inorganic pigments. Here, we describe and characterize the septum of the Lunaria annua plant that generates large (multicentimeter), freestanding iridescent sheets, with distinctive silvery-white reflective appearance. This originates from the thin-film assembly of cellulose fibers in the cells of the septum that induce thin-film interference-like colors at the microscale, thus accounting for the structure's overall silvery-white reflectance at the macroscale. These cells further assemble into two thin layers, resulting in a mechanically robust, iridescent septum, which is also significantly light due to its high air porosity (>70%) arising from the cells' hollow-core structure. This combination of hierarchical structure comprising mechanical and optical function can inspire technological classes of devices and interfaces based on robust, light, and spectrally responsive natural substrates. |
| first_indexed | 2024-09-23T11:23:40Z |
| format | Article |
| id | mit-1721.1/133033 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:23:40Z |
| publishDate | 2021 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | dspace |
| spelling | mit-1721.1/1330332024-06-06T13:42:36Z Photonic paper: Multiscale assembly of reflective cellulose sheets in Lunaria annua Guidetti, G Sun, H Marelli, B Omenetto, FG Massachusetts Institute of Technology. Department of Civil and Environmental Engineering © 2020 American Association for the Advancement of Science. All rights reserved. Bright, iridescent colors observed in nature are often caused by light interference within nanoscale periodic lattices, inspiring numerous strategies for coloration devoid of inorganic pigments. Here, we describe and characterize the septum of the Lunaria annua plant that generates large (multicentimeter), freestanding iridescent sheets, with distinctive silvery-white reflective appearance. This originates from the thin-film assembly of cellulose fibers in the cells of the septum that induce thin-film interference-like colors at the microscale, thus accounting for the structure's overall silvery-white reflectance at the macroscale. These cells further assemble into two thin layers, resulting in a mechanically robust, iridescent septum, which is also significantly light due to its high air porosity (>70%) arising from the cells' hollow-core structure. This combination of hierarchical structure comprising mechanical and optical function can inspire technological classes of devices and interfaces based on robust, light, and spectrally responsive natural substrates. 2021-10-18T18:17:36Z 2021-10-18T18:17:36Z 2020-06 2020-02 2021-10-18T17:35:41Z Article http://purl.org/eprint/type/JournalArticle 2375-2548 https://hdl.handle.net/1721.1/133033 G. Guidetti, H. Sun, B. Marelli, F. G. Omenetto, Photonic paper: Multiscale assembly of reflective cellulose sheets in Lunaria annua. Sci. Adv. 6, eaba8966 (2020) en 10.1126/SCIADV.ABA8966 Science Advances Creative Commons Attribution NonCommercial License 4.0 https://creativecommons.org/licenses/by-nc/4.0/ application/pdf American Association for the Advancement of Science (AAAS) Science Advances |
| spellingShingle | Guidetti, G Sun, H Marelli, B Omenetto, FG Photonic paper: Multiscale assembly of reflective cellulose sheets in Lunaria annua |
| title | Photonic paper: Multiscale assembly of reflective cellulose sheets in Lunaria annua |
| title_full | Photonic paper: Multiscale assembly of reflective cellulose sheets in Lunaria annua |
| title_fullStr | Photonic paper: Multiscale assembly of reflective cellulose sheets in Lunaria annua |
| title_full_unstemmed | Photonic paper: Multiscale assembly of reflective cellulose sheets in Lunaria annua |
| title_short | Photonic paper: Multiscale assembly of reflective cellulose sheets in Lunaria annua |
| title_sort | photonic paper multiscale assembly of reflective cellulose sheets in lunaria annua |
| url | https://hdl.handle.net/1721.1/133033 |
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