Design optimization of active microfluidic mixer incorporating micropillar on flexible membrane
- 40 Downloads
In this paper, the optimization of a new design of active microfluidic mixer incorporating micropillar for accelerating the mixing of fluids was performed. The studied microfluidic mixer consists of the microfluidic, mechanical, and electromagnetic parts. The finite element analysis is used to study the effect of input channel angle, micropillar’s radius and spacing, and shape of membrane on the performance of mixer. In particular, the mixing flow rate, membrane deflection and micropillar swivel or bending were evaluated. The results show that the flow rate in the range of 3.78–3.88 µl/s which is almost two times of the input flow rate was obtained. The results also show that the deflection height ranging from 40 to 170 µm, micropillar swivel from 7° to 20° were obtained. Furthermore, from the comparison among the membrane shapes, it revealed that the membrane in circular shape generates higher deflection and swivel than the other membranes in square and rectangle shapes due to the uniform tensile stress distribution.
R. E. Pawinanto thanks the Malaysia-Japan International Institute of Technology for the Japan ASEAN Integration Fund (JAIF) scholarship. The authors thank the Malaysia Ministry of Higher Education and Universiti Teknologi Malaysia for the financial supports through various research grants.
- Ghaderi M, Ayerden NP, Graaf G, Wolffenbuttel RF (2015) Minimizing stress in large-area surface micromachined perforated membranes with slits. J Micromech Microeng 25(074010):1–9Google Scholar
- Liu F, Zhang J, Alici G, Yan S, Mutlu R, Li W, Yan T (2016) An inverted micro-mixer based on a magnetically-actuated cilium made of Fe doped PDMS. Smart Mater Struct 25:1–7Google Scholar
- Su Y, Chen W (2007) Investigation on electromagnetic microactuator and its application in micro-electro-mechanical system (MEMS). In: IEEE international conference on mechatronics and automation, pp 3250–3254Google Scholar
- Tang SQ, Li KHH, Yeo ZT, Chan WX, Tan SH, Yoon YJ, Ng SH (2018) Study of concentric, eccentric and split type magnetic membrane micro-mixers. Sens Biosens Res 19:14–23Google Scholar
- Tran-Minh N, Karlsen F, Dong T (2014) A simple and low cost micromixer for laminar blood mixing: design, optimization, and analysis. J Biomed Inform 404:91–104Google Scholar
- Ugural CA, Fernster SK (2003) Advances strength and applied elasticity, 5th edn. Prentice Hall, Upper Saddle River, pp 14–29Google Scholar