Department of Molecular & Macromolecular Chemistry , Nagoya University , Furo-cho , Chikusa-ku, Nagoya 464-8603 , Japan.
Institute of Multidisciplinary Research for Advanced Materials , Tohoku University , 2-1-1 Katahira , Aoba-ku, Sendai 980-8577 , Japan.
Langmuir. 2018 Apr 10;34(14):4282-4288. doi: 10.1021/acs.langmuir.8b00242. Epub 2018 Mar 26.
In this study, we introduce the possibility of applying a colloidal amorphous array composed of fine silica particles as a structural-color material to invisible information technology. The appearance of a thick filmlike colloidal amorphous array formed from fine silica particles is considerably influenced by incoherent light scattering across the entire visible region. Therefore, regardless of the diameter of the fine silica particles, the thick colloidal amorphous array exhibits a white color to the naked eye. When carbon is uniformly deposited in the colloidal amorphous array by a pressure-pulsed chemical vapor deposition method, incoherent light scattering in the colloidal amorphous array is suppressed. As a result, coherent light scattering due to the short-range order in the colloidal amorphous array becomes conspicuous and the array exhibits a vivid structural color. As structures, such as letters and pictures, can be drawn using this technology, the colloidal amorphous array as a structural-colored material may also be applicable for invisible information technology.
在这项研究中，我们介绍了将由细硅颗粒组成的胶体非晶阵列作为结构色材料应用于不可见信息技术的可能性。由细硅颗粒形成的厚膜状胶体非晶阵列的外观受到整个可见区域内非相干光散射的显著影响。因此，无论细硅颗粒的直径如何，厚胶体非晶阵列在肉眼下都呈现白色。当通过压力脉冲化学气相沉积方法将碳均匀地沉积在胶体非晶阵列中时，胶体非晶阵列中的非相干光散射被抑制。结果，由于胶体非晶阵列中的短程有序，相干光散射变得明显，并且该阵列呈现出鲜艳的结构色。由于可以使用这项技术绘制字母和图片等结构，因此胶体非晶阵列作为结构色材料也可能适用于不可见信息技术。
