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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Vignolini, Silvia
Max Planck Society
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2023Hierarchically structured bioinspired nanocomposites
- 2020Plant-Inspired Polyaleuritate–Nanocellulose Composite Photonic Filmscitations
- 2020Cellulose Nanocrystal-Templated Tin Dioxide Thin Films for Gas Sensing.
- 2019Enhancing Photoluminescence and Mobilities in WS2 Monolayers with Oleic Acid Ligands.
- 2018Bio-inspired Highly Scattering Networks via Polymer Phase Separationcitations
- 2014Ultrafast nonlinear response of gold gyroid three-dimensional metamaterialscitations
- 2013Hierarchical orientation of crystallinity by block-copolymer patterning and alignment in an electric fieldcitations
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article
Bio-inspired Highly Scattering Networks via Polymer Phase Separation
Abstract
A common strategy to optimize whiteness in living organisms consists in using 3D random networks with dense and polydisperse scattering elements constituted by relatively low refractive index materials. Inspired by these natural architectures, a fast and scalable method to produce highly scattering porous polymer films via phase separation is developed. By varying the molecular weight of the polymer, the morphology of the porous films is modified, and therefore their scattering properties are tuned. The achieved transport mean free paths are in the micrometer range, improving the scattering strength of analogous low refractive index systems, e.g., standard white paper, by an order of magnitude. The produced porous films show a broadband reflectivity of ≈75% while only 4 µm thick. In addition, the films are flexible and can be readily index-matched with water (i.e., they become transparent when wet), allowing for various applications such as coatings with tunable transmittance and responsive paints.