自旋阀GMR传感器及免疫磁珠检测  

Spin Valve GMR Sensor and Immune Magnetic Beads Detection

作　　者：杨峰[1] 

机构地区：[1]四川文理学院国有资产管理处,四川达州635000

出　　处：《测试技术学报》2016年第2期132-136,共5页Journal of Test and Measurement Technology

基　　金：四川文理学院青年启动项目资助(2014Z006Q)

摘　　要：巨磁阻(GMR)生物传感器的直接检测对象是免疫磁珠,对免疫磁珠的检测水平直接决定着生物样品检测的质量.因此,基于GMR生物传感器的免疫磁珠检测研究具有重要意义.本文介绍了自旋阀GMR生物传感器对免疫磁珠检测的原理;利用课题组自行研制的自旋阀GMR芯片搭建免疫磁珠检测系统;用搭建的检测系统进行了免疫磁珠检测实验.实验结果表明:自旋阀GMR传感器表面的免疫磁珠浓度越大时,其输出信号的变化量也越大.The direct detection object of the GMR biosensor is immune magnetic beads,and the level of immune magnetic beads detection directly decides the quality of biological sample detection.Therefore,the research of immune magnetic beads detection based on GMR biosensor is of great significance.First,this paper introduces the principle of immune magnetic beads detection by using Spin Valve GMR sensor;Then,built the immune magnetic beads detection system with the spin valve GMR chip,which was developed by our research group;Finally,immune magnetic beads detection experiment was carried out on the detection system.The experiment results show that：when the concentration of immune magnetic beads on the surface of the spin valve GMR sensor is higher,the output signal variation is greater.

关 键 词：巨磁阻 自旋阀 生物检测 免疫磁珠 生物传感器 

分 类 号：TP212.3[自动化与计算机技术—检测技术与自动化装置]