作者：Qingwen Shi, Hongxi Liu, Tao Peng, Aqing Tian, Mingxiong Wu, Rui Liu, Chen Pan, Jiuxiao Sun, Haiying Tan, Jing Jin, Wei Jiang
关键字：聚多巴胺, 光子晶体, 热致变色, 二次变色, 结构色, ZnS纳米粒子, 温度传感
论文来源：期刊
具体来源：ACS Applied Nano Materials, 2025, 8(6), 2741-2752
发表时间：2025年

摘要：温度检测对公共安全以及智能安全监控和火灾传感系统至关重要，因此实现各种温度的可视化预警具有重要意义。本文基于聚多巴胺降解和ZnS纳米粒子在不同温度区间加热时的晶体结构转变，在金属基底上制备了二次变色光子晶体（PC）涂层。PC涂层在300°C下97秒内发生第一次颜色变化，在700°C以上（276秒）发生第二次颜色变化。这种颜色变化既可通过计算机算法实现自动预警响应，也可通过肉眼直接观察，实现有效视觉传感。PC涂层可直接应用于监测表面进行温度传感，与现有监控摄像头集成时无需额外设备。

Abstract：Temperature detection is crucial for public safety as well as knowledgeable security monitoring and fire sensing systems. Thus, enabling visual warnings for various temperatures is highly significant. Herein, secondary color-changing photonic crystal (PC) coatings were fabricated on the metal substrates based on polydopamine degradation and the crystal structure transformation of ZnS nanoparticles when heated across different temperature ranges. The PC coatings exhibit their first color change within 97 s at 300°C and a second color change after 700°C (276 s). This color change enables both automated warning responses via computer algorithms and visual detection by the naked eye, achieving effective visual sensing. The PC coatings can be directly applied to the monitoring surfaces for temperature sensing. When integrated with existing surveillance cameras, no additional equipment is required.

论文链接：https://doi.org/10.1021/acsanm.4c06190