压电石英晶体生物传感器应用研究进展

压电石英晶体生物传感器是利用压电石英晶体振荡频率对晶体表面质量负载和表面性状如密度、粘度、电导、介电常数等的高度敏感性与生物识别分子的高度特异性相结合发展起来的一种新型传感器。它具有灵敏度高、特异性好;操作简单,不需任何标记;检测速度快,成本低廉;能实时检测等特点。近年来,压电石英晶体生物传感器在医学实验诊断、军事监控、环境监测、食品卫生检验、工业生产实时监测等野外流动作业和在线检测等领域得到广泛应用。
关键词: 生物传感器; 压电; 石英晶体
Abstract : Piezoelectric quartz crystal biosensor is a new sensor ,combining the high sensitivity to mass and sur2 face characteristics of quartz crystal , such as density , viscosity , dielectric constant , conductance with the high specificity of biologic identification molecules. It has the features of high sensitivity ,high specificity ,simple opera2 tion ,high analysis speed ,low cost , small size ,on2line detection ,etc. In recent years , It has been applied in the
fields of medical laboratory diagnosis ,military control ,environment monitor ,foods sanitary detection and industri2 al production.
Key words : biosensor ; piezoelectric ; quartz crystal