液体注入薄膜上的电润湿（EWOLF）：用于快速光学成像的完全可逆性和受控液滴振荡抑制
Electrowetting on liquid-infused film (EWOLF): Complete reversibility and controlled droplet oscillation suppression for fast optical imaging
摘要：
电介质上的电润湿（EWOD）已经成为以受控方式电操纵微小单个液滴的强大工具。尽管在过去的二十年中取得了巨大的进步，但目前在环境条件下工作的EWOD功能有限，这对其应用构成了挑战，包括电子显示、能量产生和微流体系统。在这里，我们展示了一个新的范例，电润湿液体注入膜（EWOLF），允许完全可逆性和可调瞬态响应同时进行。我们确定EWOLF中的这些功能归因于其新颖的配置，其允许形成粘性液-液界面以及额外的润湿脊，从而抑制接触线钉扎和在常规EWOD中遇到的严重液滴振荡。最后，通过利用EWOLF中展示的这些功能，我们还探索了其作为液体透镜用于快速光学聚焦的应用。
英文摘要：
Electrowetting on dielectric (EWOD) has emerged as a powerful tool to electrically manipulate tiny individual droplets in a controlled manner. Despite tremendous progress over the past two decades, current EWOD operating in ambient conditions has limited functionalities posing challenges for its applications, including electronic display, energy generation, and microfluidic systems. Here, we demonstrate a new paradigm of electrowetting on liquid-infused film (EWOLF) that allows for complete reversibility and tunable transient response simultaneously. We determine that these functionalities in EWOLF are attributed to its novel configuration, which allows for the formation of viscous liquid-liquid interfaces as well as additional wetting ridges, thereby suppressing the contact line pinning and severe droplet oscillation encountered in the conventional EWOD. Finally, by harnessing these functionalities demonstrated in EWOLF, we also explore its application as liquid lens for fast optical focusing.
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