可重新配置的光子晶体可逆呈现单双结构颜色
Yi-Yang Zhan1, Daisuke Ogawa2, Koki Sano1,2
1RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.
Angewandte Chemie (International ed. in English)
|October 20, 2023
概括
研究人员开发了一种可重新配置的光子晶体,用于先进的结构颜色. 这种材料可以在单峰和双峰反射之间切换,提供可调的,持久的色彩可能性.
科学领域:
- 材料科学 材料科学 材料科学
- 光学是什么?光学是什么?光学是什么?
- 纳米技术 纳米技术
背景情况:
- 来自光子晶体的结构性颜色为传统染料和颜料提供了耐用的,对刺激有反应的替代品.
- 目前的局限性包括设计光谱的挑战,因为一个结构通常会产生由布拉格定律规定的单个反射峰值.
研究的目的:
- 设计一种可重新配置的光子晶体,能够显示单峰和双峰结构颜色.
- 为了证明这些颜色状态之间的可逆过渡.
主要方法:
- 使用水中的合性纳米片制造光子晶体,形成具有特定周期性的分层结构.
- 应用温度梯度处理以诱导分离并改变不同区域的周期性.
- 对反射光谱的描述,以观察单峰和双峰现象.
主要成果:
- 光子晶体自发地形成了一个单周期性的分层结构 (407 nm).
- 温度梯度处理诱导了特定区域的缩小 (385 nm) 和扩大 (448 nm) 周期.
- 这导致了双反射峰的展示,蓝色和红色从原来的单峰移动.
- 单峰和双峰状态之间的过渡被证明是可逆的.
结论:
- 一个新的可重新配置的光子晶体已经成功开发出来.
- 该材料通过在单峰和双峰反射模式之间切换来展示可调节的结构颜色.
- 这一进步有可能为下一代具有动态光谱特性的下一代着色机制提供潜力.
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