张琛 1,*文通 1刘泽志 1高文萍 1[ ... ]白晋涛 1,**
作者单位
摘要
1 西北大学光子与光子技术研究所,陕西 西安 710127
2 浙江大学光电科学与工程学院,浙江 杭州 310007
Such as, by using the photothermal effect of materials, the surface tension of the lubrication layer on the surface of materials can be changed, thus creating a wetting gradient force to push the droplets to move. Further, the sliding and pinning of the droplet can be controlled by the phase change of the paraffin layer on some functional surfaces. The pyroelectric crystal can generate the dielectric force field on its surface based on the photothermal effect, which could be applied to realize the lossless moving, merging, and splitting of the droplets. In addition, the wettability of the photovoltaic crystals could be changed with the irradiation of light, therefore, can be used to control the behavior of droplets. In this paper, the development of the photo-responsive functional surface in droplet manipulation was briefly reviewed. The mechanisms of the droplet manipulation with the functional surface were expatiated. The categories of functional surfaces were summarized, the characteristics of the structure were analyzed, and the corresponding implementation method was introduced in detail. In addition, the applications of the photo-responsive functional surface in droplet transportation, fusion, and segmentation were introduced. Finally, the future development and potential applications of the photo-responsive functional surface for droplet manipulation were prospected.
光响应 功能表面 液滴操控 润湿性 photo-responsive functional surface droplet manipulation wettability 
光电工程
2023, 50(3): 220326
作者单位
摘要
重庆理工大学 药学与生物工程学院, 重庆 400054
为提高数字微流控芯片上液滴驱动能力及效率, 开展了数字微流控系统的设计及平台搭建研究, 该系统包括上位机控制软件、下位机硬件系统和DMF芯片三部分。提出一种曲边四边形组合电极, 该电极图形边缘能与液滴保持更大的重合度, 可提供更大的初始驱动力。测试了芯片上空气浴和油浴中液滴的驱动控制, 测得在空气浴中碳酸丙烯脂液滴的平均速度为25 μm/s, 在油浴中碳酸丙烯脂液滴的平均速度为260 μm/s。实验结果表明, 所设计的曲边四边形电极可有效增强液滴的驱动控制能力。
数字微流控 液滴操控 电极图形 液滴驱动 digital microfluidics droplet manipulation electrode pattern droplet drive 
光学 精密工程
2020, 28(11): 2488

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