Multi-material 3D microstructures with photochemically adaptive mechanical properties,Journal of Materials Chemistry C

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Multi-material 3D microstructures with photochemically adaptive mechanical properties
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2020-07-27 , DOI: 10.1039/d0tc02751k
Marvin Gernhardt _{1,

2,

3,

4,

5} , Hendrik Frisch _{1,

2,

3,

4,

5} , Alexander Welle _{6,

7,

8,

9,

10} , Robert Jones _{3,

4,

5,

11} , Martin Wegener _{8,

10,

12,

13,

14} , Eva Blasco _{6,

7,

8,

9,

10} , Christopher Barner-Kowollik _{1,

2,

3,

4,

5}

Affiliation

The popularity of direct laser writing as a technique capable of producing truly three-dimensional structures at the microscale is remarkable. However, examples of resists imparting adaptable functionality onto microstructures are still scarce. Herein, we describe multi-material boxing ring microstructures with locally visible light-responsive mechanical properties from an anthracene dimer-based photoresist. Utilizing microstructures created from this material is a powerful avenue for changing the mechanics of a well-defined microenvironment. A higher laser exposure per unit of time cleaves more anthracene dimer during the writing process which is then available for further photochemistry. We find that not only the viscoelastic properties but also the photo-responsiveness of these microstructures is drastically impacted by the parameters they were written with. Realizing that the laser irradiation during the direct laser writing process can be used to trigger secondary chemistry opens the door to an entirely new approach to designing photoresists.

中文翻译：

具有光化学适应性机械性能的多材料3D微结构

直接激光写入作为一种能够在微尺度上产生真正的三维结构的技术而广受欢迎。然而，仍然缺乏将可适应的功能赋予微结构的抗蚀剂的实例。在这里，我们描述了基于蒽二聚体的光致抗蚀剂具有局部可见光响应机械性能的多材料拳击环微结构。利用由这种材料制成的微结构是改变定义良好的微环境力学的强大途径。单位时间内较高的激光曝光量会在写入过程中裂解出更多的蒽二聚体，然后可用于进一步的光化学反应。我们发现，不仅是这些材料的粘弹性，而且这些微结构的光响应性也受到编写它们的参数的极大影响。认识到直接激光写入过程中的激光照射可用于触发次级化学反应，为设计光致抗蚀剂的全新方法打开了大门。

更新日期：2020-08-21

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