| 학회 | 한국재료학회 |
| 학술대회 | 2010년 가을 (11/11 ~ 11/12, 무주리조트) |
| 권호 | 16권 2호 |
| 발표분야 | A. Information and Sensor Materials(정보소재 및 센서) |
| 제목 | Numerical Analysis of Magnetic Field Distribution of Micromagnetic Tags in Microfluidic Channel |
| 초록 | We describe a numerical technique for calculating the 3D magnetic field distribution of micromagnetic tags in microfluidic channel. The technique we used is the vector potential model based on the molecular current method and the finite element numerical simulation. The proposed algorithm is know the stray field distribution at the sensor plane exactly to decode the magnetic tags. For simple geometries, the magnetic field distribution was calculated in a three dimensional geometry under the assumptions that the ferromagnetic elements are rectangular shape with the magnetization aligned to y-axis direction as depicted. We used 20 nm thick CoFe rectangular magnetic elements, encapsulated within an SU8 support, which has length 100 μm, width 80 μm and thickness 2 μm. The magnetic elements embedded in the SU8 support are 60 μm long and have various widths from 1 to 10 μm. It shows three dimensional distribution of the transverse magnetic field By with flying height of 5 μm. It clearly shows that the the maximum transverse field could be obtained at the side wall of the microfluidics channel. It implies that the sensor should be oriented and placed such that it was maximized in the microfluidics channel. Details of calculation results including sensor singal scaling and misalign effect will be reported in this presentation. This work is supported by the National Research Foundation (NRF) grant (No. 2009-0064787, 2009-0069888) funded by the Korean Government. |
| 저자 | Vo Thanh Son1, Bo-Geon2, Jeon3, T.Q. Hung4, S. Kim1, J.-H. Jeong2, C. Kim3, J.-R. Jeong4 |
| 소속 | 1Department of Materials Science, 2Chungnam National Univ., 3Daejeon 305-704, 4Korea |
| 키워드 | microtag; microfluidic; sensor |
