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(duì)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(shí)別分子的高度特異性相結(jié)合發(fā)展起來(lái)的一種新型傳感器。它具有靈敏度高、特異性好;操作簡(jiǎn)單,不需任何標(biāo)記;檢測(cè)速度快,成本低廉;能實(shí)時(shí)檢測(cè)等特點(diǎn)。近年來(lái),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(cè)、食品衛(wèi)生檢驗(yàn)、工業(yè)生產(chǎn)實(shí)時(shí)監(jiān)測(cè)等野外流動(dòng)作業(yè)和在線檢測(cè)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