Plasmonic color has played a critical role for its applications in color printing and display owing to the advantages of high-resolution and durability. Recently, increasing attempts have been performed to actualize dynamic structural color. Here theoretically proposed is the generation of wide color gamut in symmetric Ge 2 Sb 2 Te 5 (GST) based metamaterial absorber. By introducing a periodic metallic nanodisk array on top of the composite structure, the color variation arises from GST transition between amorphous phase and crystalline phase can be enhanced significantly. Due to the interplay of the localized/propagating surface plasmons, Fabry–Perot cavity mode and Wood’s anomaly with different resonant frequencies, both hue and saturation of the structural color can be tuned accordingly through adjusting the structural geometry of the nanodisks. It is demonstrated that up to 74% and 94% of the sRGB and CMY(K) space can be obtained with this phase-c...

中文翻译：

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对称的Ge 2 Sb 2 Te 5基超材料吸收体诱导的动态宽色域结构色

由于高分辨率和耐用性的优势，等离子彩色在彩色打印和显示应用中起着至关重要的作用。近来，已经进行了增加的尝试以实现动态结构颜色。从理论上讲，这里是基于对称Ge 2 Sb 2 Te 5（GST）的超材料吸收剂中宽色域的产生。通过在复合结构的顶部引入周期性的金属纳米盘阵列，可以显着增强由非晶态和晶态之间的GST过渡引起的颜色变化。由于局部/传播的表面等离子体激元，法布里-珀罗腔模和具有不同共振频率的伍德异常之间的相互作用，可以通过调整纳米盘的结构几何形状来相应地调整结构颜色的色相和饱和度。