Yang Yijing, Jiang Pengcheng, Li Haonan, Li Wei, Li Dongliang, Yan Xiao, Zhu Xun, Ye Dingding, Yang Yang, Wang Hong, Chen Rong, Liao Qiang
Key Laboratory of Low-grade Energy Utilization Technologies and Systems (Chongqing University), Ministry of Education, Chongqing 400030, China.
Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing 400030, China.
J Phys Chem Lett. 2024 Aug 29;15(34):8877-8895. doi: 10.1021/acs.jpclett.4c01977. Epub 2024 Aug 22.
Optofluidics, which utilizes the interactions between light and fluids to realize various functions, has garnered increasing attention owing to the advantages of operational simplicity, exceptional flexibility, rapid response, etc. As one of the typical light-fluid interactions, the localized photothermal effect serving as a stimulus has been widely used for fluid manipulation. Particularly, significant progress on photothermal-driven droplet manipulation has been made. In this perspective, recent advancements in localized photothermal effect driven droplet manipulation are summarized. First, the photothermal manipulation of droplets on open surfaces is outlined. An attractive droplet manipulation of light droplet levitation above the gas-liquid interface via localized photothermal effect is then discussed. Besides, the photothermal-driven manipulation of droplets in an immiscible liquid phase is also discussed. Although promising, further development of photothermal-driven droplet manipulation is still needed. The challenges and perspectives of this light droplet manipulation strategy for broad implementation are summarized, which will help future studies and applications.
光流体学利用光与流体之间的相互作用来实现各种功能，因其操作简单、灵活性高、响应迅速等优点而受到越来越多的关注。作为典型的光-流体相互作用之一，局部光热效应作为一种刺激已被广泛用于流体操控。特别是，在光热驱动的液滴操控方面取得了显著进展。在此视角下，总结了局部光热效应驱动液滴操控的最新进展。首先，概述了开放表面上液滴的光热操控。接着讨论了通过局部光热效应实现气液界面上方轻液滴悬浮这一引人注目的液滴操控。此外，还讨论了在不混溶液相中光热驱动的液滴操控。尽管前景广阔，但光热驱动液滴操控仍需进一步发展。总结了这种轻液滴操控策略广泛应用面临的挑战和前景，这将有助于未来的研究和应用。
