Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, No. 96 Jinzhai Road, Hefei, Anhui Province, 230026, P. R. China.
Sci Rep. 2017 Feb 1;7:41311. doi: 10.1038/srep41311.
Real-time temperature imaging with high spatial resolution has been a challenging task but also one with wide potential applications. To achieve this task, temperature sensor is critical. Fluorescent materials stand out to be promising candidates due to their quick response and strong temperature dependence. However, former reported temperature imaging techniques with fluorescent materials are mainly based on point by point scanning, which cannot fulfill the requirement of real-time monitoring. Based on fluorescent intensity ratio (FIR) of two emission bands of SrBO:Sm, whose spatial distributions were simultaneously recorded by two cameras with special filters separately, real-time temperature imaging with high spatial resolution has been realized with low cost. The temperature resolution can reach about 2 °C in the temperature range from 120 to 280 °C; the spatial resolution is about 2.4 μm and the imaging time is as fast as one second. Adopting this system, we observed the dynamic change of a micro-scale thermal distribution on a printed circuit board (PCB). Different applications and better performance could also be achieved on this system with appropriate fluorescent materials and high sensitive CCD detectors according to the experimental environment.
实现具有高空间分辨率的实时温度成像是一项具有挑战性的任务，但也具有广泛的潜在应用。要实现这一任务，温度传感器是关键。荧光材料由于其快速响应和强烈的温度依赖性而成为有前途的候选材料。然而，以前报道的基于荧光材料的温度成像技术主要基于逐点扫描，无法满足实时监测的要求。基于 SrBO:Sm 的两个发射带的荧光强度比（FIR），通过两个带有特殊滤光片的相机分别同时记录其空间分布，实现了具有低成本的高空间分辨率实时温度成像。在 120 到 280°C 的温度范围内，温度分辨率可达到约 2°C；空间分辨率约为 2.4μm，成像时间快至 1 秒。采用该系统，我们观察到印刷电路板（PCB）上微尺度热分布的动态变化。根据实验环境，采用适当的荧光材料和高灵敏度 CCD 探测器，该系统还可以实现不同的应用和更好的性能。
