Bioinspired Dynamic Camouflage from Colloidal Nanocrystals Embedded Electrochromics

被引：56

作者：

Chen, Ke ^{[1
]}

He, Jiazhi ^{[1
]}

Zhang, Di ^{[2
]}

You, Liyan ^{[1
]}

Li, Xuefei ^{[1
]}

Wang, Haiyan ^{[2
]}

Mei, Jianguo ^{[1
]}

机构：

[1] Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA

[2] Purdue Univ, Sch Mat Engn, W Lafayette, IN 47907 USA

来源：

NANO LETTERS | 2021年 / 21卷 / 10期

关键词：

colloidal nanocrystal; electrochromic polymer; camouflage; optoelectronics; color synthesis; PHOTONIC CRYSTALS; COLORATION; POLYMERS; PATTERNS; COATINGS; FILMS;

D O I：

10.1021/acs.nanolett.1c01419

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Camouflage is often seen in animals, and it presents in both passive and active forms. For instance, the wings of Closterocerus cof feellae exhibit distinct appearances against different backgrounds, while the chameleon actively changes its skin colors to morph into the environment. Herein, we report an artificial skin-like optoelectronic device that enables actively changing appearances and passively morphing into the environment by manipulating light-matter interactions with electrochromic polymers and photonic colloid nanocrystals. To construct the new electrochromic device, highly reflective, yet transmissive photonic nanocrystals are introduced into the gel electrolyte and sandwiched between the layers of electrochromic polymers and ion storage materials. Through voltage-controlled color switching of electrochromic polymers from colored state to bleached state, the degree of light absorbance, transmittance, and reflectance can be finely balanced and precisely modulated with the device. A broad synthesized color gamut and angle-dependent visual effects can be realized on this electronic skin-like device.

引用

页码：4500 / 4507

页数：8

共 36 条

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