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Nature | 可打印元组装体实现协同结构显色

Nature | 可打印元组装体实现协同结构显色
论文信息
题目:Printable meta-assemblies enable synergetic colouration
期刊:Nature
时间或卷页:Nature 652, 1195–1203 (2026);2026 年 4 月 22 日在线发表
DOI:10.1038/s41586-026-10408-8
第一作者:Kaixuan Li;Jianfeng Chen(共同第一作者)
通讯作者:Huizeng Li;Cheng-Wei Qiu;Yanlin Song
单位:中国科学院化学研究所;新加坡国立大学;中国科学院大学;复旦大学;中国科学院理化技术研究所;新加坡科技设计大学

30 秒速读

这篇 Nature 解决的是结构色材料里一个很实际的矛盾:自然界的结构色往往来自多尺度层级结构,但人工体系通常要么只在纳米尺度精细,要么能大面积制造却功能单一。作者提出的核心单元是PS 纳米颗粒周期嵌入PDMS后形成的meta-assembly
这个单元最有意思的地方,是把光子带隙(PBG)的选择性反射和全内反射(TIR)的路径干涉耦合在一起。中心区域主要给出稳定的 Bragg 反射颜色,边缘区域则产生强烈的角度相关和尺寸相关颜色
工艺上,作者把喷墨打印、自组装、PDMS 嵌入转移和卷对卷制造整合成R2R-ANP,实现1.2 m 级彩色薄膜100% 嵌入转移良率单像素定制
我认为它的意义是给出了一个从纳米颗粒到宏观图案的可制造多尺度光子材料路线。对于结构色防伪柔性显示信息编码,它更像是一个工艺平台,而不是单一展示样品。

3 分钟理解

1. 这篇文章真正想解决什么?

结构色不是靠染料吸收,而是靠微纳结构调控光的干涉、衍射和散射。它天然有环保和抗褪色优势,但真正走向应用时,最大问题常常不是颜色能不能做出来,而是能不能同时做到复杂光学功能图案可设计大面积制造
作者选择的路径不是再做一个更精细的纳米图案,而是构造一个多尺度的“元组装体”:纳米颗粒负责周期性光子晶格,微米尺度的凹面负责改变光传播路径。这样,一个像素就同时具备中心反射、边缘干涉和偏振相关响应。

从纳米胶体颗粒、微米元组装体到宏观彩色薄膜,文章的主线是把多尺度结构做成可连续制造的光学像素。

2. 结构怎么做出来?

制备路线可以概括为四步:先用喷墨打印PS 纳米颗粒墨水沉积到低黏附疏水基底上,液滴干燥后自组装成穹顶状胶体光子晶体(DCPC);再用PDMS预聚物覆盖并渗入颗粒间隙;固化后把PDMS薄膜剥离并翻转;原来的穹顶结构就变成嵌在PDMS中的微凹光学界面
这里的制造亮点在于连续卷对卷加性纳米印刷(R2R-ANP)。作者展示了约403,225 dots per square inch的打印分辨率、DCPC 到 meta-assembly 的100% 转化良率,以及1.2 m薄膜中约4 × 10^7 个元组装体的宏观制造能力。

喷墨自组装、PDMS 嵌入转移和卷对卷处理共同决定了这套体系的规模化潜力。

3. 光学机制为什么是“协同”的?

在这个结构里,中心区域主要由周期性纳米颗粒阵列产生光子带隙(PBG),因此反射峰相对窄、颜色更稳定;而在微凹边缘,光会沿曲面发生多次全内反射(TIR)光程差带来宽谱干涉和角度相关颜色。
更关键的是二者并不是互不相干地叠加。PBG 会过滤特定波段TIR则把不同波长引向不同空间和角度响应,最终使一个 meta-assembly 同时表现出中心色边缘色偏振环形图案角分辨虹彩

PBG 控制中心选择性反射,TIR 控制边缘路径干涉;两者耦合后形成空间分离但光学相关的颜色响应。

4. 可调性来自哪里?

文章把结构参数和颜色做成了较清楚的对应关系。纳米颗粒尺寸 Dn改变光子晶格常数,从而移动中心区域的反射颜色;元组装体直径 Dm改变边缘 TIR 路径,从而调节边缘颜色。中心、边缘和整体颜色因此可以分别设计
从应用角度看,这种可调性比“单一颜色很鲜艳”更重要。它允许同一薄膜在不同观察/照明条件下表现出反射逆反射模式组合;再叠加单像素打印能力,就可以构造防伪显示信息编码图案。

调节 Dn 和 Dm 可以分别影响中心、边缘和整体颜色,说明这不是偶然显色,而是可设计的结构-颜色关系。

个人思考

我觉得这篇工作的真正价值,是把“多尺度结构色”从自然启发推进到可制造平台。很多结构色论文在显微图上很漂亮,但宏观制造图案定制稳定性常常是弱项;这篇文章把这些工程问题放在主线里处理,因此更接近实际材料系统。
从光学设计看,PBGTIR的组合很有启发。PBG提供波长选择,TIR提供路径和角度选择;二者耦合后,一个微米级像素不只是“有颜色”,而是有多通道光学响应。这对防伪和信息编码尤其重要。
需要谨慎理解的是,这套体系的颜色质量和可重复性会高度依赖颗粒单分散性液滴干燥动力学界面润湿窗口PDMS 嵌入转移。论文展示了很好的良率和稳定性,但如果换材料、换墨水或扩大到更复杂图案,工艺窗口仍然会是核心挑战。
对做有机半导体和光电材料的人,这篇文章也有一个旁路启发:材料本身未必一定要很昂贵或很复杂,真正的功能增益可以来自几何层级界面形貌可制造流程协同设计

原文链接

https://doi.org/10.1038/s41586-026-10408-8
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  1. CONNECT:[ UseTime:0.000430s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000624s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000295s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000280s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000579s ]
  6. SELECT * FROM `set` [ RunTime:0.000233s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000665s ]
  8. SELECT * FROM `article` WHERE `id` = 645328 LIMIT 1 [ RunTime:0.003849s ]
  9. UPDATE `article` SET `lasttime` = 1779229708 WHERE `id` = 645328 [ RunTime:0.032671s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.005194s ]
  11. SELECT * FROM `article` WHERE `id` < 645328 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.002628s ]
  12. SELECT * FROM `article` WHERE `id` > 645328 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000447s ]
  13. SELECT * FROM `article` WHERE `id` < 645328 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001473s ]
  14. SELECT * FROM `article` WHERE `id` < 645328 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000791s ]
  15. SELECT * FROM `article` WHERE `id` < 645328 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004247s ]
0.168789s