Athermal and Soft Multi-Nanopatterning of Azopolymers: Phototunable Mechanical Properties.,Angewandte Chemie International Edition

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Athermal and Soft Multi-Nanopatterning of Azopolymers: Phototunable Mechanical Properties.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2019-12-10 , DOI: 10.1002/anie.201914201
Bowen Yang ₁ , Feng Cai ₁ , Shuai Huang ₁ , Haifeng Yu ₁

Affiliation

Imprinting nanopatterns on flexible substrates has diverse applications in advanced fabrication. However, the traditional thermal nanoimprint lithography (T-NIL) often causes shrinkage upon cooling. Here, a simple yet versatile method is introduced to fabricate multiple nanopatterns on a flexible substrate coated with an azopolymer by combining athermal nanoimprint lithography (AT-NIL) and photolithography. The azopolymer has various mechanical properties upon photoirradiation: 1) phototunable glass-transition temperatures (Tg ) and concomitantly photoinduced switch from glassy plastic to viscoplastic polymer; 2) prominent modulation of viscoplasticity under light illumination at different wavelengths. Regionally selective multiple nanopatterns are conveniently fabricated, presenting angle-dependent structural color images on poly(ethylene terephthalate) (PET) substrates. The flexible, athermal and multiple nanopatterning method has the potential for on-demand fabrication of complex nanopatterns.

中文翻译：

偶氮聚合物的无热和软多纳米构图：光可调机械性能。

在柔性基板上压印纳米图案在先进制造中具有多种应用。但是，传统的热纳米压印光刻技术（T-NIL）通常会在冷却时引起收缩。在这里，介绍了一种简单而通用的方法，通过结合非热纳米压印光刻（AT-NIL）和光刻技术，在涂有偶氮聚合物的柔性基板上制造多个纳米图案。偶氮聚合物在光辐照下具有多种机械性能：1）光可调的玻璃化转变温度（Tg），并随之发生光诱导的从玻璃状塑料到粘塑性聚合物的转变；2）在不同波长的光照射下粘塑性的显着调节。可以方便地制造区域选择性的多种纳米图案，在聚对苯二甲酸乙二醇酯（PET）基材上呈现与角度相关的结构彩色图像。柔性，无热和多重纳米图案化方法具有按需制造复杂纳米图案的潜力。

更新日期：2020-01-10

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