Huong Giang D T, Dang D X, Toan N X, Tuan N V, Phung A T, Duc N H
Laboratory for Micro-Nano Technologies and Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering and Technology, Vietnam National University, Hanoi, 144 Xuan Thuy Road, Cau Giay, Hanoi, Vietnam.
Department of Physics, Le Quy Don University, 236 Hoang Quoc Viet Road, Cau Giay, Hanoi, Vietnam.
Rev Sci Instrum. 2017 Jan;88(1):015004. doi: 10.1063/1.4973729.
Distance magnetic nanoparticle detections were investigated by using a magnetoelectric based magnetic sensor with a long type bilayer Metglas/PZT laminate composite. In homogeneous magnetic fields, the sensor exhibits a sensitivity of 307.4 mV/Oe, which is possible for a detection limit of 2.7 × 10 emu. This sensor can detect an amount of 0.31 μg of the superparamagnetic FeO-chitosan fluid at 2 mm height above the sensor surface. To detect a spot with magnetic nanoparticles at a distance of about 7.6 mm, it should contain at least 50 μg of iron oxide. This approach can develop the local detection of magnetic nanoparticles at a depth of centimeters in the body during clinical interventions.
利用基于磁电效应的带有长型双层Metglas/PZT层压复合材料的磁传感器研究了远距离磁性纳米颗粒检测。在均匀磁场中，该传感器的灵敏度为307.4 mV/Oe，这使得检测限达到2.7×10 emu成为可能。该传感器能够在传感器表面上方2 mm高度处检测到0.31 μg的超顺磁性FeO-壳聚糖流体。要检测距离约7.6 mm处带有磁性纳米颗粒的斑点，其应至少含有50 μg的氧化铁。这种方法可用于在临床干预期间对体内厘米深度处的磁性纳米颗粒进行局部检测。
