Fabrication Method of Mems Based Clamped-Clamped Resonant Magnetometer

Article Preview

Abstract:

In this paper we present fabrication steps for manufacturing MEMS based magnetometer which is actuated by Lorentz force in the middle point of beam which has been fixed from both two edges (Clamped - Clamped). We utilized two different process sequences in order to fabricate microsystems properly. The structures were first fabricated on bulk Si-wafer and the fabrication of these sensors was characterized by built in stress in the beam and etching methods in the processes. The second approach was performed on SOI Si-wafer. Two fabrication routes are compared in terms of working MEMS structures. The microstructures are manufactured successfully by a process sequence based on SOI-Si wafer.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

106-110

Citation:

Online since:

June 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] B. Bahreyni and C. Shafai, A resonant micromachined magnetic field sensor, Sensors Journal, IEEE, vol. 7, pp.1326-1334, (2007).

DOI: 10.1109/jsen.2007.902945

Google Scholar

[2] A. Boé, A. Safi, M. Coulombier, T. Pardoen, and J. -P. Raskin, Internal stress relaxation based method for elastic stiffness characterization of very thin films, Thin Solid Films, vol. 518, pp.260-264, (2009).

DOI: 10.1016/j.tsf.2009.06.062

Google Scholar

[3] M. J. Thompson and D. A. Horsley, Parametrically amplified MEMS magnetometer, in Solid-State Sensors, Actuators and Microsystems Conference, 2009. TRANSDUCERS 2009. International, 2009, pp.1194-1197.

DOI: 10.1109/sensor.2009.5285917

Google Scholar

[4] M. J. Thompson and D. A. Horsley, Parametrically Amplified Z-Axis Lorentz Force Magnetometer, Microelectromechanical Systems, Journal of, vol. 20, pp.702-710, (2011).

DOI: 10.1109/jmems.2011.2140355

Google Scholar

[5] H. Xie, H. Sun, K. Jia, D. Fang, and H. Qu, Multi-axis integrated CMOS-MEMS inertial sensors, in Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on, 2010, pp.1394-1395.

DOI: 10.1109/icsict.2010.5667618

Google Scholar

[6] D. Ren, L. Wu, M. Yan, M. Cui, Z. You, and M. Hu, Design and analyses of a MEMS based resonant magnetometer, Sensors, vol. 9, pp.6951-6966, (2009).

DOI: 10.3390/s90906951

Google Scholar

[7] D. Antonio and D. Lopez, Micromechanical magnetometers based on clamped-clamped high-Q nonlinear resonators, in Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International, 2011, pp.2851-2854.

DOI: 10.1109/transducers.2011.5969150

Google Scholar