Nano-magnetic sensing system for biomedical devices

我们研究了磁珠和磁性传感器的发展及其在生物医学应用中用于检测蛋白质、DNA、病毒等的微流控设备中的集成。利用聚合物分散剂制备的磁珠是由Fe-铂纳米粒子组成的集合体，具有很高的磁响应能力。开发了一种基于隧道磁阻效应的磁场传感器制作工艺，并将其集成到微流控器件中。

We studied developments of magnetic beads and magnetic sensors and their integration in a microfluidic device for detecting protein, DNA, virus, and etc in bio-medical applications. Magnetic beads, which is an assembly composed of Fe-Pt nanoparticles, were obtained using polymer dispersing agents, and they exhibited a high magnetic response. A fabrication process for magnetic-field sensors based on the tunneling-magnetoresistance effect and the integration into a microfluidic device were developed.