Abstract.

We analyze a microfluidic pump from the literature that utilizes a flat channel with boundary walls at different temperatures and tilted elongated pillars within in order to construct an adequate theory for designing devices in which the temperature gradient between channel walls is transformed into a longitudinal temperature gradient along the channel length. The action of the device is based on thermoosmosis in the secondary longitudinal temperature gradient associated with the specific geometry of the device, which can be described using physicochemical hydrodynamics without invoking the concept of thermophoretic force. We also describe a rotating drive device based on the same principle and design.

Graphical abstract

中文翻译：

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微流体装置中的热渗，其温度梯度垂直于通道壁。

摘要。

我们从文献中分析了一种微流体泵，该泵利用具有不同温度的边界壁和内部倾斜的细长柱的平坦通道，从而为设计设备提供了足够的理论，在该器件中，通道壁之间的温度梯度被转换为纵向温度梯度。通道长度。装置的作用是基于与装置的特定几何形状相关的次级纵向温度梯度中的热渗透作用，这可以使用理化流体动力学来描述，而无需引用热泳力的概念。我们还将基于相同的原理和设计描述一种旋转驱动设备。

图形概要