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首页> 外文会议>6th international conference on nanochannels, microchannels and minichannels 2008 >WETTABILITY EFFECT ON FLOW BOILING IN A MEMS-BASED SINGLE GLASS MICROCHANNEL
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WETTABILITY EFFECT ON FLOW BOILING IN A MEMS-BASED SINGLE GLASS MICROCHANNEL

机译：基于MEMS的单玻璃微通道中沸腾的润湿性效应

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Many studies have investigated boiling heat transfer in microchannels; however, such phenomena are not yet fully understood, and conflicting results have been reported. There are many important parameters that govern behavior in microsystems, including channel shape, roughness, and choice of material. One potentially important parameter is hydrophobicity of the microchannel surface, as interfacial forces play an increasing role at microscales. We developed a new method of fabricating, a single glass rectangular microchannel and microheater using the MEMS (Micro-Electro-Mechanical System) fabrication technique. The glass was used as a hydrophilic surface, and a self-assembled monolayer was coated with OTS (Octadecyl-Trichloro-Silane) to obtain a hydrophobic surface. We conducted an experiment of boiling heat transfer in a microchannel using two surfaces of contrasting hydrophobicity. The resulting flow was observed using a long-distance microscope and a high-speed camera. This approach enables a qualitative analysis of the hydrophobicity effect on the flow regime.
机译：许多研究已经研究了微通道中的沸腾传热。但是，这种现象还没有被完全理解，并且已经报道了矛盾的结果。有许多重要的参数可控制微系统中的行为，包括通道形状，粗糙度和材料选择。一个潜在的重要参数是微通道表面的疏水性，因为界面力在微尺度上起着越来越大的作用。我们使用MEMS（微机电系统）制造技术开发了一种新的制造方法，即单个玻璃矩形微通道和微型加热器。将该玻璃用作亲水性表面，并用OTS（十八烷基-三氯硅烷）涂布自组装单层以获得疏水性表面。我们使用疏水性相反的两个表面进行了微通道中沸腾传热的实验。使用长距离显微镜和高速相机观察所得流量。这种方法可以对流动状态的疏水性影响进行定性分析。

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