Supramolecular Azopolymers for Dynamic Surface Microstructures Using Digital Polarization Optics
Supramolecular Azopolymers for Dynamic Surface Microstructures Using Digital Polarization Optics
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DOI：
10.1002/adom.202202245
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发表时间：
2023-03
影响因子：
9
通讯作者：
Jonas Strobelt;Matthew Van Soelen;H. Abourahma;D. McGee
中科院分区：
文献类型：
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作者：
Jonas Strobelt;Matthew Van Soelen;H. Abourahma;D. McGee
薄膜超分子偶氮聚合物支持动态表面微结构的全光学生成。利用空间光调制器（SLM）在488nm处照射，结构偏振光驱动周期为700nm - 5µm的正弦波，速度可达1µm s−1。SLM焦平面内膜表面的多个区域可以独立运动，每个区域具有独特的周期、速度、振幅和传播方向。潜在的机制是偶氮聚合物的光力学响应，它更常用于制造静态表面微结构。氢键系统，如本文描述的超分子系统，由于其易于由市售组件制造而具有特别的优势。除了在动态衍射光学中的应用之外，这种可编程的光学表面波系统也非常适合于纳米颗粒操作的研究，以及作为定向细胞生长的可重构表面模板的生物工程。
Thin film supramolecular azopolymers support the all‐optical generation of dynamic surface microstructures. Using a spatial light modulator (SLM) illuminated at 488 nm, structured polarized light drives surface waves of sinusoidal profile with periods 700 nm–5 µm at speeds up to 1 µm s−1. Multiple regions on the film surface within the SLM focal plane can be independently set into motion, each with unique period, speed, amplitude, and propagation direction. The underlying mechanism is the photomechanical response of the azopolymer, which is more commonly exploited for the fabrication of static surface microstructures. Hydrogen‐bonded systems such as the supramolecular system described here are particularly advantageous due to their facile fabrication from commercially available components. In addition to applications in dynamic diffractive optics, this programmable system for optical surface waves is well‐suited for studies in nanoparticle manipulation, as well as in bioengineering as a reconfigurable surface template for directed cell growth.