壓電石英晶體生物傳感器是利用壓電石英晶體振蕩頻率對晶體表面質(zhì)量負(fù)載和表面性狀如密度、粘度、電導(dǎo)、介電常數(shù)等的高度敏感性與生物識別分子的高度特異性相結(jié)合發(fā)展起來的一種新型傳感器。它具有靈敏度高、特異性好;操作簡單,不需任何標(biāo)記;檢測速度快,成本低廉;能實(shí)時(shí)檢測等特點(diǎn)。近年來,壓電石英晶體生物傳感器在醫(yī)學(xué)實(shí)驗(yàn)診斷、軍事監(jiān)控、環(huán)境監(jiān)測、食品衛(wèi)生檢驗(yàn)、工業(yè)生產(chǎn)實(shí)時(shí)監(jiān)測等野外流動作業(yè)和在線檢測等領(lǐng)域得到廣泛應(yīng)用。
關(guān)鍵詞: 生物傳感器; 壓電; 石英晶體
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