基于UV图案化导电聚合物的氧化还原可调结构彩色图像
Redox-tunable structural colour images based on UV-patterned conducting polymers
摘要：
光-物质相互作用的精确操纵使各种各样的方法能够创造明亮而生动的结构色。利用光子晶体、法布里-珀罗腔、等离子体或高折射率电介质超颖表面的技术已经被研究用于从光学涂层到反射显示器的应用范围。然而，亚波长纳米结构的复杂制造过程、有限的有源区域以及这些方法固有的可调谐性的缺乏显著地阻碍了它们向与简易且具有成本效益的生产兼容的柔性、大规模和可切换器件的进一步发展。在此，我们提出了一种方法来产生基于导电聚合物薄膜通过气相聚合和紫外（UV）光图案化的金属表面上制备的结构色。改变紫外线剂量导致薄膜吸收和厚度的协同变化，从而产生从紫色到红色的可控颜色。与灰度光掩模一起，这使得能够使用单个曝光步骤制造高分辨率彩色图像。我们进一步展示了时空调谐的结构着色的表面和图像，通过电化学调制的聚合物氧化还原状态。简单的结构，易于制造，宽色域和动态色彩调节使这一概念在未来的多功能和智能显示器中具有竞争力。
英文摘要：
Precise manipulation of light-matter interaction has enabled a wide variety of approaches to create bright and vivid structural colours. Techniques utilizing photonic crystals, Fabry-Pérot cavities, plasmonics, or high-refractive index dielectric metasurfaces have been studied for applications ranging from optical coatings to reflective displays. However, complicated fabrication procedures for sub-wavelength nanostructures, limited active areas, and inherent absence of tunability with these approaches significantly impede their further developments towards flexible, large-scale, and switchable devices compatible with facile and cost-effective production. Herein, we present a way to generate structural colours based on conducting polymer thin films prepared on metallic surfaces via vapour phase polymerization and ultraviolet (UV) light patterning. Varying the UV dose leads to synergistic variation of film absorption and thickness, which generates controllable colours from violet to red. Together with greyscale photomasks this enables fabrication of high-resolution colour images using single exposure steps. We further demonstrate spatiotemporal tuning of the structurally coloured surfaces and images via electrochemical modulation of the polymer redox state. The simple structure, facile fabrication, wide colour gamut, and dynamic colour tuning make this concept competitive for future multi-functional and smart displays.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
