Realizing Dynamic Diffraction Gratings Based on Light-Direct Writing of Responsive 2D Ordered Patterns,ACS Materials Letters

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Realizing Dynamic Diffraction Gratings Based on Light-Direct Writing of Responsive 2D Ordered Patterns
ACS Materials Letters ( IF 9.6 ) Pub Date : 2020-08-12 , DOI: 10.1021/acsmaterialslett.0c00285
Luzhi Zhang _{1,

2,

3} , Guotao Sun _{4,

5} , Jing Bai _{1,

2,

3} , Xiaodong Ma _{1,

2,

3} , Jie Yin _{1,

2,

3} , Qingkang Wang _{4,

5} , Xuesong Jiang _{1,

2,

3}

Affiliation

A dynamic diffraction grating (DDG) can realize on-demand in-situ regulation of light diffraction and is highly necessary in the next-generation optical devices; however, its fabrication remains challenging because of difficulties in generating a responsive pattern in the bulk material or on the surface. In this study, a facile and general approach to construct DDG is developed based on the near-infrared radiation (NIR)-driven responsive 2D ordered surface pattern, which is fabricated by light-direct writing of wrinkles on a thin film of a photosensitive supramolecular polymer network comprised of a copolymer containing amino groups, anthracene carboxylic acid (ANA), and carbon nanotubes. The resulting surface pattern, which exhibits a height dependence on the NIR irradiation, can be used as the DDG whose optical diffraction can be regulated in-situ by NIR. Furthermore, because of the presence of a reversible ANA photodimer and hydrogen bonding in the supramolecular network, the patterned surface can be erased and rewritten by UV light with different wavelengths and self-healed by NIR irradiation. The results demonstrate a simple strategy for DDGs that will have a broad application in the fields of optics, electronics, and intelligent sensing.

中文翻译：

基于响应式二维有序图案的光直接写入实现动态衍射光栅

动态衍射光栅（DDG）可实现点播的-现场调节光衍射，在下一代光学设备中非常必要；然而，由于难以在块状材料中或在表面上产生响应图案，因此其制造仍然具有挑战性。在这项研究中，基于近红外辐射（NIR）驱动的响应2D有序表面图案，开发了一种构造DDG的简便且通用的方法，该方法是通过在感光性超分子薄膜上直接皱纹的光直接写入来制造的聚合物网络由含有氨基的共聚物，蒽羧酸（ANA）和碳纳米管组成。所得到的表面图案，其表现出对NIR照射的高度依赖性，可以被用作其光衍射可调节的DDG在-原位通过NIR。此外，由于超分子网络中存在可逆的ANA光二聚体和氢键，图案化的表面可以被具有不同波长的UV光擦除和重写，并且可以通过NIR辐射进行自我修复。结果表明，DDG的简单策略将在光学，电子和智能传感领域得到广泛应用。

更新日期：2020-09-08

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