| 基于巨磁电阻传感器的磁珠检测方法 |
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| 引用本文： | 黄晗,高晓光,何秀丽,贾建,李建平.基于巨磁电阻传感器的磁珠检测方法[J].传感器与微系统,2018(5):23-26. |
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| 作者姓名： | 黄晗 高晓光 何秀丽 贾建 李建平 |
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| 作者单位： | 中国科学院电子学研究所传感技术国家重点实验室,北京100190;中国科学院大学,北京100190
中国科学院电子学研究所传感技术国家重点实验室,北京,100190 |
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| 摘 要： | 根据多层膜巨磁电阻(GMR)传感器检测速度快、灵敏度高、仪器易于小型化的特点,比较了不同磁场激励方式与输出信号处理方法,采用电桥电压与激励磁场双调制的检测方法,提高了传感器的信噪比,实现了微米磁珠的定量检测和纳米磁珠的定性检测.
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| 关 键 词： | 巨磁电阻 生物传感器 双调制 磁珠检测 giant magnetoresistance(GMR) biosensor dual modulation magnetic particle detection |
Magnetic particle detection method based on giant magnetoresistance sensor |
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| HUANG Han,GAO Xiao-guang,HE Xiu-li,JIA Jian,LI Jian-ping.Magnetic particle detection method based on giant magnetoresistance sensor[J].Transducer and Microsystem Technology,2018(5):23-26. |
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| Authors: | HUANG Han GAO Xiao-guang HE Xiu-li JIA Jian LI Jian-ping |
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| Abstract: | According to advantages of rapid detection,high sensitivity and easy to be miniaturized of giant magnetoresistance(GMR)sensor,and characteristics of multilayer GMR sensor,excitation mode of different magnetic field and method of output signal processing are compared.The signal to noise ratio(SNR)of sensor is enhanced by double-modulation detecting method of bridge and voltage and excitation magnetic field.This method achieves magnetic micron-particle quantitative detection and nanoparticle qualitative detection. |
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