Designing Responsive Photonic Crystal Patterns by Using Laser Engraving

ACS Applied Materials & Interfaces
Youfeng Yue, Takayuki Kurokawa

Abstract

Soft photonic crystals are periodic nanostructures that have attracted much attention for their applications in sensors, owing to their tunable structural colors in response to external stimuli. Patterned photonic crystals provide a novel strategy for constructing high-performance photonic materials with unique structures and functions. In this work, laser engraving is used for the first time to design patterns on a layered photonic hydrogel. This approach is based on the integration of laser power and chemical modifications to embed different polymer composites (polyelectrolyte and neutral polymers) along a prescribed laser-printed path. The polyelectrolyte and neutral composites show differential swelling or shrinking, causing a mechanical instability in the layered hydrogel. The resultant soft polymeric materials appear as synchronous tuning in the photonic band gaps in response to external stimuli. This approach is favorable for designing responsive photonic crystals with controllable optical properties and 3D shape transformation. Moreover, it is of great use in developing advanced photonic crystals for applications in sensors, soft actuators, and drug release.

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Citations

Jan 31, 2020·Nature Communications·Youfeng Yue, Yasuo Norikane
Mar 19, 2020·Small·Wei HongXudong Chen
Dec 10, 2020·Nanomaterials·Ping Kwong ChengYuen Hong Tsang
Aug 10, 2021·Journal of Colloid and Interface Science·Xia HongboDong Bin
Dec 29, 2020·ACS Applied Materials & Interfaces·Lijing ZhangShengyang Tao
Nov 9, 2021·Chemical Reviews·Zhiwei LiYadong Yin

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