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yexuqing木虫之王 (文学泰斗)
太阳系系主任
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Monomer-biased manufacture of industrial-scale colloidal photonic films
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Monomer-biased manufacture of industrial-scale colloidal photonic films 基于单体偏置策略的工业级胶体光子薄膜制造 ▲ 作者：Huateng Li, Junying Yang et al. ▲链接： https://www.science.org/doi/10.1126/science.aed8723 ▲摘要：自然界中复杂功能源于简单构筑单元的有序组装。然而，由于高能垒和有限的组装控制，在快速环境条件下将胶体聚集体转化为工业级光子晶体仍具挑战。研究者将普通单体作为介体降低了这些能垒，并在数秒内偏置了环境剪切诱导的有序化。 这使得该原位加工工艺能够与卷对卷制造兼容，用于生产力学性能可调的胶体光子晶体薄膜。结合超分子基质的15微米厚、坚固的薄膜，可生产长达4000米、宽达1.3米、速率达25米/分钟的规模。这些薄膜兼具鲜艳的结构色和高透明度（>90%），同时具备力学鲁棒性和快速自愈合能力，展示了高质量胶体光子材料的一条可规模化路径。 ▲ Abstract：Complex functions in nature arise from the ordered assembly of simple building blocks. Transformation of colloidal aggregates into industrial-scale photonic crystals under rapid ambient conditions remains challenging owing to high energy barriers and limited assembly control. In this study, common monomers act as mediators that lower these barriers and bias ambient shear-induced ordering within seconds. This enables in situ processing compatible with roll-to-roll manufacturing of colloidal photonic crystal films with tunable mechanical properties. Robust 15-micrometer-thick films, incorporating a supramolecular matrix, can be produced up to 4000 meters long and 1.3 meters wide at a rate of 25 meters per minute. These combine vivid structural color and high transparency (>90%) with mechanical robustness and rapid self-healing, demonstrating a scalable route to high-quality colloidal photonic materials. |
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