超顺磁纳米弛豫开关传感器的检测原理及影响因素综述  

A review on the detection theory and influencing factors of superparamagnetic nanometer relaxation switch sensor

作　　者：谷桂英 王欣[1] 刘宝林[1] GU Gui-ying;WANG Xin;LIU Bao-lin(School of Medical Instrument and Food Engineering,University of Shanghai for Science and Technology,Shanghai 200093)

机构地区：[1]上海理工大学医疗器械与食品学院,上海200093

出　　处：《分析试验室》2019年第2期235-241,共7页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金项目(NSFC81773482;31201365);上海市科委重点攻关项目(11142200403)资助

摘　　要：磁弛豫开关(MRS)传感器的检测是以超顺磁氧化铁纳米粒子的磁响应信号为基础。与光学方法相比,MRS不需要对样品进行复杂的预处理而对浑浊样品中进行检测,具有良好的无损性、选择性,检测过程快速、灵敏。这使MRS传感技术在食品安全、临床医学、生化分析等方面显示出了巨大的应用潜力。本文重点对超顺磁纳米弛豫开关传感器的检测原理及影响因素进行了综述,并对其发展方向及应用前景进行了展望。Magnetic relaxation switches (MRS)are based on the signals of superparamagnetic iron oxide nanoparticles.Compared with the optical method,MRS are capable of detecting turbid samples with no pretreatment,and they have advantages of fast,non-destructive,high sensitivity and good selectivity.Therefore,MRS shows promising applications in clinical medicine,food safety,and biochemical analysis.The detection theory of superparamagnetic nanometer relaxation switch sensor and its influencing factors were summarized in this paper,and an outlook on the application of magnetic relaxation switches has been provided.

关 键 词：磁弛豫开关传感器 超顺磁氧化铁纳米粒子 原理 影响因素 

分 类 号：O652[理学—分析化学]