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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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声表面波实现微流体垂向输运
, PP. 1805-1810
Keywords: 声表面波,微流分析,叉指换能器,纸基,微流体
Abstract:
提出了声表面波实现微流体垂向输运方法,使得纸基微流器件具有前处理操作功能。在128°旋转Y切割X传播方向的LiNbO3基片上光刻叉指换能器对和反射栅,纸基微流器件通过贴合于压电基片表面的PDMS置放于距压电基片上方2mm处,经功率放大器放大的RF信号加到叉指换能器对上,激发的两相声表面波使得压电基片上待分析微流体垂向运动并到达纸基片实现纸基微流分析。采用不同体积红色染料溶液微流体进行了垂向输运实验。结果表明:纸基片距压电基片一定间距时,实现压电基片上待分析微流体垂向输运到其上方的纸基片决定于该微流体体积和所加的RF信号功率。采用本方法实现了纸基NO2-浓度检测。
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