The study of thermocapillary convection has attracted the attention of researchers due to the importance in both fundamental and industrial aspects. To trace the state of flows in real time during thermocapillary convection, the development of imaging methods and tools is essential. Here we use a benzothiazole unit-bearing spiropyran (BS1-SP) as a photostimulated indicator to visualize the details of instantaneous temperature distribution and flow pattern on the surface of volatile solvent simultaneously with a high spatial and temporal resolution during convection. This work provides insights into dynamic self-organization and thermo-hydrodynamics taking place in evaporating systems, and a useful tool to study these behaviors.

中文翻译：

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用于瞬时可视化热场分布和流动模式的光刺激螺吡喃

由于在基础和工业方面的重要性，热毛细管对流的研究引起了研究人员的关注。为了在热毛细对流过程中实时追踪流动状态，成像方法和工具的发展至关重要。在这里，我们使用带有苯并噻唑单元的螺吡喃 (BS1-SP) 作为光刺激指示剂，在对流过程中以高空间和时间分辨率同时可视化挥发性溶剂表面的瞬时温度分布和流动模式的细节。这项工作提供了对蒸发系统中发生的动态自组织和热流体动力学的见解，以及研究这些行为的有用工具。