Rosetta Giselle, Gunn Matthew, Tomes John J, Butters Mike, Pieschel Jens, Hartmann Frank, Gallei Markus, Finlayson Chris E
Department of Physics, Prifysgol Aberystwyth University, Aberystwyth SY23 3BZ, UK.
Varichem Co., Ltd., Brynmawr NP23 4BX, UK.
Molecules. 2022 Jun 11;27(12):3774. doi: 10.3390/molecules27123774.
We report on shear-ordered polymer photonic crystals demonstrating intense structural color with a photonic bandgap at 270 nm. Our work examines this UV structural color, originating from a low refractive index contrast polymer composite system as a function of the viewing angle. We report extensive characterization of the angle-dependent nature of this color in the form of 'scattering cones', which showed strong reflectivity in the 275-315 nm range. The viewing range of the scattering was fully quantified for a number of planes and angles, and we additionally discuss the unique spectral anisotropy observed in these structures. Such films could serve as low-cost UV reflection coatings with applications in photovoltaics due to the fact of their non-photobleaching and robust mechanical behavior in addition to their favorable optical properties.
我们报道了具有剪切有序的聚合物光子晶体，其在270nm处具有光子带隙，展现出强烈的结构色。我们的工作研究了这种源于低折射率对比度聚合物复合体系的紫外结构色随视角的变化。我们以“散射锥”的形式广泛表征了这种颜色的角度依赖性，其在275 - 315nm范围内显示出强反射率。对多个平面和角度的散射观察范围进行了全面量化，此外，我们还讨论了在这些结构中观察到的独特光谱各向异性。由于这些薄膜具有非光漂白性、良好的机械性能以及有利的光学特性，它们可作为低成本的紫外反射涂层应用于光伏领域。
