在毛细管微通道内壁沉积二氧化硅微球并加以亲/疏水改性,以此来构建亲/疏水纳米结构表面微通道,考察了一定粘度的羧甲基纤维素钠水溶液在光滑亲/疏水微通道和粗糙亲/疏水微通道中的流动行为.结果表明,保持压力恒定,光滑毛细管(基材)中的液体流量随着粘度和管长的增加而减小；粘度一定,压力增加,无论壁面光滑或粗糙,疏水管中的流量均大于亲水管,且粗糙管中疏水/亲水流量斜率比大于光滑管；在低压时亲水管流量大于疏水管,而高压时恰好相反.采用滑移理论和牛顿运动定律对上述现象进行了解释,本研究以期为合理地操控微通道内的流体流动提供有价值的指导.
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