Disordered Cellulose-Based Nanostructures for Enhanced Light Scattering.
Disordered Cellulose-Based Nanostructures for Enhanced Light Scattering.
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DOI：
10.1021/acsami.6b15986
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发表时间：
2017-03-08
影响因子：
9.5
通讯作者：
Sapienza R
中科院分区：
文献类型：
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作者：
Caixeiro S;Peruzzo M;Onelli OD;Vignolini S;Sapienza R
纤维素是地球上最丰富的生物聚合物。纤维素纤维，例如从棉或木浆中提取的纤维，数百年来一直被人类用来制造纺织品和纸张。在这里，我们展示了如何通过设计光与物质的相互作用，仅使用纤维素纳米晶体来优化光散射。所生产的材料具有可持续性、生物相容性，与普通的微纤维纸相比，它显示出增强的散射强度 (×4)，在可见光范围内产生低至 3.5 μm 的传输平均自由程。实验结果与光传播扩散模型获得的理论预测非常吻合。
Cellulose is the most abundant biopolymer on Earth. Cellulose fibers, such as the one extracted form cotton or woodpulp, have been used by humankind for hundreds of years to make textiles and paper. Here we show how, by engineering light–matter interaction, we can optimize light scattering using exclusively cellulose nanocrystals. The produced material is sustainable, biocompatible, and when compared to ordinary microfiber-based paper, it shows enhanced scattering strength (×4), yielding a transport mean free path as low as 3.5 μm in the visible light range. The experimental results are in a good agreement with the theoretical predictions obtained with a diffusive model for light propagation.