Generation and manipulation of oil-in-water micro-droplets by confined thermocapillary microvortices
Generation and manipulation of oil-in-water micro-droplets by confined thermocapillary microvortices
复制标题
受限热毛细管微涡产生和操纵水包油微滴
DOI：
10.1364/ol.388188
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发表时间：
2020-04-01
期刊：
影响因子：
3.6
通讯作者：
Shui, Lingling
中科院分区：
文献类型：
--
作者：
Chen, Yilin;Yang, Jianxin;Shui, Lingling
光流体对液滴的操纵是化学、生物和医学中基于液滴的微流体系统的关键。在这里，我们报道了一个基于热毛细微涡的操作平台，该平台通过将光热波导集成到微流控芯片中来控制水包油滴。水滴的大小和形状可以通过调节光功率或水-油界面的位置来控制。在这里，当水-油界面和通道边界同时靠近光热波导中心时，形成了泪滴状的液滴，易于包裹和积聚介观物质。结果表明，热毛细微涡对液滴位置、体积和被封装颗粒分布具有良好的可控性，将成为微反应器和微胶囊中强有力的液滴控制策略。(C) 2020美国光学学会
Optofluidic manipulation of droplets is critical in droplet-based microfluidic systems for chemistry, biology, and medicine. Here, we reported a thermocapillary microvortices-based manipulation platform for controlling oil-in-water droplets through integrating a photothermal waveguide into a microfluidic chip. The sizes and shapes of the droplets can be controlled by adjusting optical power or positions of the water-oil interface. Here, teardrop-shaped droplets, which can encapsulate and accumulate mesoscopic matters easily, were generated when the water-oil interface and the channel boundaries approached the photothermal waveguide center simultaneously. The results showed that the thermocapillary microvortices have good controllability of droplet positions, droplet volumes, and encapsulated-particle distribution and thus it will be a powerful droplet manipulation strategy for microreactors and microcapsules. (C) 2020 Optical Society of America