Surface-directed channels filled with organic solvents.
Surface-directed channels filled with organic solvents.
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尽管微流体装置的通道通常是管道，但一些小组最近研究了表面定向通道。这些通道是在两个堆叠的载玻片之间创建的，这些载玻片物理上平坦但具有化学图案。用于此类通道的工作流体主要是水溶液，尽管有机溶剂在有机合成等某些应用中很重要。在这项研究中，开发了新型表面定向通道，其中可以包含各种有机溶剂，包括二甲苯、硝基苯和二甲亚砜。用于这些通道的载玻片预先用磨料研磨并用(十三氟-1,1,2,2-四氢辛基)三甲氧基硅烷处理。二甲苯以高达 99.99 microL min(-1) 的流速连续流过 1 mm 宽、40 mm 长、0.14 mm 深的通道。
Although channels of microfluidic devices are normally pipes, some groups have recently studied surface-directed channels. These channels were created between two stacked glass slides that were physically flat but chemically patterned. The working fluids used for such channels were mostly water solutions, though organic solvents are important in some applications such as organic synthesis. In this study, novel surface-directed channels were developed, which could contain various organic solvents including xylene, nitrobenzene, and dimethyl sulfoxide. The glass slides used for these channels were previously ground by an abrasive and treated with (tridecafluoro-1,1,2,2-tetrahydrooctyl)trimethoxysilane. Xylene continuously flowed through a 1 mm wide, 40 mm long, and 0.14 mm deep channel at flow rates up to 99.99 microL min(-1).