%0 Conference Paper
%A Ho, Anh Tam
%A Nguyen, Van Hung
%A Do, Thi Huong Giang
%A Nguyen, Huu Duc
%A CheoGi, Kim
%B The 9th International Workshop on ADVANCED MATERIALS SCIENCE AND NANOTECHNOLOGY
%C Ninh Binh, Vietnam
%D 2018
%F SisLab:3515
%T Design, simulation and fabrication of a high sensitivity micro-magnetometer integrated with microfluidics system and flux concentrators for biomedical applications
%U https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3515/
%X Biomagnetism is the phenomenon of magnetic fields emitted by living organisms including cells. Magnetic field strength produced by cells or even with cells marked by magnetism (called biomarkers) are generally very weak. For this reason, cells/biomarkers (bio-samples) detection usually were done by directly contacting the bio-samples with sensor surface that would cause to degradation of sensor performance after some measurements. To deal with such situation, using an annular-shaped flux concentrator made by a high magnetic permeability material to increase magnetic amplification in sensor’s surface is necessary. Beside, this solution also supports for the measurement without contact. In this paper, we describes the results in design, simulation and fabrication of a high sensitivity micro-magnetometer integrated with microfluidics system and flux concentrators for biomedical applications (Fig. 1a). From simulation toward experiment, the results showed that by using the optimal annular-shaped flux concentrator to focus flux lines on sensor’s surface, the sensor signals is more than ten times higher than in the case directly contact method (Fig. 1b). The system opens up the potential for widespread use in lab-on-a-chip for biomedical applications and commercialization