Design, simulation and fabrication of a high sensitivity micro-magnetometer integrated with microfluidics system and flux concentrators for biomedical applications

Ho, Anh Tam and Nguyen, Van Hung and Do, Thi Huong Giang and Nguyen, Huu Duc and CheoGi, Kim (2018) Design, simulation and fabrication of a high sensitivity micro-magnetometer integrated with microfluidics system and flux concentrators for biomedical applications. In: The 9th International Workshop on ADVANCED MATERIALS SCIENCE AND NANOTECHNOLOGY, 18-21 November 2018, Ninh Binh, Vietnam.

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Abstract

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

Item Type:	Conference or Workshop Item (Poster)
Subjects:	Engineering Physics
Divisions:	Key Laboratory for Nanotechnology (Nano Lab)
Depositing User:	Dr Giang Do
Date Deposited:	20 Jun 2019 22:39
Last Modified:	24 Jun 2019 06:45
URI:	http://eprints.uet.vnu.edu.vn/eprints/id/eprint/3515

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