摘要
研制了压电基片上能实现样品前处理的纸基微流器件。在128°YX-LiNbO3基片上制作了1个叉指换能器和1个反射栅;亲水性纸用来制作微流器件的微通道,浸有指示剂滤纸作为微反应器,一同粘附于透明胶带上,并采用聚二甲基硅氧烷(PDMS)贴合于压电基片上。叉指换能器激发的声表面波驱动压电基片上的样品,使其输运到纸基微通道,并在纸基微反应器进行微流分析。在研制的纸基微流器件上实现了NO2-浓度的快速检测。
A paper-based micro-fluidic device with sample preliminary treatment was designed on a piezoelectric substrate.An inter-digital transducer and a reflector were fabricated on the 128°YX-LiNbO3 substrate.Hydrophilic paper was used for micro-channels and a filter with indicator as a micro-reactor,which were adhered to a cellulose tape.Then they were jointed on the piezoelectric substrate using PDMS.Surface acoustic wave excited by the inter-digital transducer actuated a sample on the piezoelectric substrate and then transported to the micro-reactor,which was used to be analyzed.The concentration of NO-2 was detected by the paper-based micro-fluidic device.
出处
《压电与声光》
CAS
CSCD
北大核心
2011年第6期849-851,855,共4页
Piezoelectrics & Acoustooptics
基金
浙江省自然科学基金资助项目(Y1080118)
宁波市自然基金资助项目(2011A610108)
关键词
声表面波
纸基微流器件
叉指换能器
压电基片
surface acoustic wave
paper-based micro-fluidic device
inter-digital transducer
piezoelectric substrate
