Research on mass detection methods of magnetic nanoparticles
A method and device for detecting the mass of magnetic nanoparticles based on Helmholtz coils and TMR magnetic sensors were proposed,and the weak magnetic response signals of magnetic nanoparticles of different masses were detected by TMR magnetic sensors under uniform magnetic field,and the trend of magnetic response signals with mass was analyzed and standardized curves were drawn.The results showed that there was a positive correlation between the weak magnetic response signal and the mass of magnetic nanoparticles.The proposed method and device provide a theoretical basis for further study of magnetic nanoparticles for immunoassays and single-molecule detection to obtain other relevant information,and had a good application prospect.
magnetic nanoparticlesweak field detectionHelmholtz coilsTMR magnetic sensor
NETL
NSTL
万方数据
维普
