The love wave device with the substrate of st - cut quartz and the guiding layer of si02 was used as the saw biosensor . dna sensor employing synthetic seb dna probe as a molecular recognizing component was utilized to detect seb by measuring seb dna in samples 该传感器采用以st一切割的石英晶片为基体,以510 :为波传导层的乐甫波( lovewaves )装置,利用具有分子识别功能的dna合成探针来实现对样品中sebdna的检测。