Simulation And Fabrication Of A Magnetic Actuator For Pumping Fluids In Microchannels

Microfluidic devices depend on the miniaturization of some components such as sensors, actuators and reactors to enable its applications and expand the possibilities. In this context, we fabricated an actuator capable of pumping fluids through microchannels and ensure the portability of the microfluidic device. The actuator uses the magnetic field generated by a coil to move a neodymium magnet over a PDMS diaphragm. Thus, the pressure variation within the microchannel and its geometry "nozzle-diffuser" causes the fluid to move preferentially in one direction. Finally, the influence of the diaphragm geometry and the electromagnetic force were analyzed to improve the efficiency of the actuator.Yih, T.C., Mei, C., Hammad, B., Modeling and characterization of a nanoliter drug-delivery MEMS micropump with circular bossed membrane (2005) Nanomedicine: Nanotechnology, Biology, and Medicine, 1 (2), p. 164Xia, N., Hunt, T.P., Mayers, B.T., Alsberg, E., Whitesides, G.M., Westervelt, R.M., Ingber, D.E., Combined microfluidic-micromagnetic separation of living cells in continuous flow (2006) Biomedical Microdevices, 8, pp. 299-308Fournier-Wirth, C., Coste, J., Nanotechnologies for pathogen detection: Future alternatives? (2010) Biologicals, 38, pp. 9-13Wang, Y.H., Tsai, Y.W., Tsai, C.H., Lee, C.Y., Fu, L.M., Design and analysis of impedance pumps utilizing electromagnetic actuation (2010) Sensors, 10 (4), pp. 4040-4052Ivnitski, D., Abdel-Hamid, I., Atanasov, P., Wilkins, E., Biosensors for detection of pathogenic bacteria (1999) Biosensors and Bioelectronics, 14, pp. 599-624Ibrahim, M.S.B., Mahat, M.M.B., CFD analysis of electromagnetic based valveless pump (2012) Procedia Engineering, 41, pp. 1524-1532Lee, C.Y., Chang, H.T., Wen, C.Y., A MEMS-based valveless impedance pump utilizing electromagnetic actuation (2008) Journal of Micromechanics and Microengineering, 18 (3), pp. 2-3Dau, V.T., Dinh, T.X., Tanaka, K., Sugiyama, S., Study on geometry of valveless-micropump (2009) 2009 IEEE/ASME International Conference: Advanced Intelligent Mechatronics, Singapore: IEEE Xplore, p. 308Chang, H.T., Lee, C.Y., Wem, C.Y., Hong, B.S., Theoretical analysis and optimization of electromagnetic actuation in a valveless microimpedance pump (2007) Microelectronics Journal, 38 (6-7), pp. 791-799Lee, C.Y., Chen, Z.H., Valveless impedance micropump with integrated magnetic diaphragm (2010) Biomed Microdevices, 12 (2), pp. 197-205Yufeng, S., Wenyuan, C., Feng, C., Weiping, Z., Electromagnetically actuated micropump with two flexible diaphragms (2006) The International Journal of Advanced Manufacturing Technology, 30 (3-4), p. 216Yen, L.C., Hsien, T.C., Lung, C.C., Hsiung, T.C., Nan, W.Y., Ming, F.L., Numerical simulation of electromagnetic actuator for impedance pumping (2011) Key Engineering Materials, 483, pp. 305-310Chang, H.T., Lee, C.Y., Wen, C.Y., Design and modelling of electromagnetic actuator in mems-based valveless impedance pump (2007) Microsystem Technologies, 13 (11-12), pp. 1615-1622Ribeiro, L.E.B., Piazzetta, M.H., Costa, J.S., Gobbi, A.L., Fruett, F., Fabrication and characterization of an impedance micro-bridge for lab-on-a-chip (2010) ECS Transactions, 31 (1), pp. 155-163Yang, H., Tsai, T., Hu, C., Portable valve-less peristaltic micropump design and fabrication (2008) DTIP of MEMS & MOEMS, pp. 273-278Zhang, Z., Zhao, P., Xiao, G., Benjamin, W.R., Xu, C., Sealing SU-8 microfluidic channels using PDMS (2011) Biomicrofluidics, 5 (4