介电泳塑造液膜
Shaping liquid films by dielectrophoresis
AI总结：
我们通过理论模型和实验验证，展示了利用表面电极产生的介电力分布来塑造薄膜液体的形变，并实现了复杂二维形变及动态调控或固化。
摘要：
我们提出了一个理论模型和实验演示，展示了由表面电极建立的介电力分布引起的薄膜液体形变。我们模拟了一对平行电极产生的空间电场，并通过麦克斯韦应力评估界面上的应力。通过将该力与杨-拉普拉斯方程耦合，我们获得了界面的形变。为了验证我们的理论，我们设计了一个实验装置，该装置使用微加工电极实现对薄膜液体的空间介电泳驱动，同时通过数字全息显微镜提供微尺度形变的测量。我们表征了形变随电极对几何形状和膜厚度的变化，显示出与模型非常好的吻合。基于对系统表征的见解，我们在微流控腔室表面图案化电极对的导电线条，并展示了产生复杂二维形变的能力。这些膜可以保持液态，并在不同构型之间动态调节，或聚合形成具有高表面质量的固体结构。
英文摘要：
We present a theoretical model and experimental demonstration of thin liquid film deformations due to a dielectric force distribution established by surface electrodes. We model the spatial electric field produced by a pair of parallel electrodes and use it to evaluate the stress on the interface through Maxwell stresses. By coupling this force with the Young-Laplace equation, we obtain the deformation of the interface. To validate our theory, we design an experimental setup which uses microfabricated electrodes to achieve spatial dielectrophoretic actuation of a thin liquid film, while providing measurements of microscale deformations through digital holographic microscopy. We characterize the deformation as a function of the electrode-pair geometry and film thickness, showing very good agreement with the model. Based on the insights from the characterization of the system, we pattern conductive lines of electrode pairs on the surface of a microfluidic chamber and demonstrate the ability to produce complex two-dimensional deformations. The films can remain in liquid form and be dynamically modulated between different configurations or polymerized to create solid structures with high surface quality.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
