反射表面上核壳质子纳米粒子的分色开关

Tian Liang, Zhiwei Li, Yaocai Bai, Yadong Yin
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引用次数: 0

摘要

质子金属纳米结构可以同时散射和吸收光,共振波长和强度取决于其形态和组成。这项研究表明,利用等离子纳米结构对光的共振散射和吸收以及由此产生的透射光的镜面反射,可以实现独特的二色性效应和高对比度色彩切换。我们利用由金属内核和电介质外壳组成的核/壳纳米结构,展示了在反射基底上喷涂这种结构后产生的二色性薄膜,可以在不同视角下显示颜色切换。高对比度的色彩切换、设计多色图案的高度灵活性以及大规模生产的便利性,都为其在防伪、机械变色传感、彩色显示和印刷等领域的广泛应用提供了保证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Dichroic switching of core–shell plasmonic nanoparticles on reflective surfaces

Dichroic switching of core–shell plasmonic nanoparticles on reflective surfaces

Plasmonic metal nanostructures can simultaneously scatter and absorb light, with resonance wavelength and strength depending on their morphology and composition. This work demonstrates that unique dichroic effects and high-contrast colour-switching can be achieved by leveraging the resonant scattering and absorption of light by plasmonic nanostructures and the specular reflection of the resulting transmitted light. Using core/shell nanostructures comprising a metal core and a dielectric shell, we show that their spray coating on reflective substrates produces dichroic films that can display colour switching at different viewing angles. The high-contrast colour switching, high flexibility in designing multicolour patterns, and convenience for large-scale production promise their wide range of applications, including anticounterfeiting, mechanochromic sensing, colour display, and printing.

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