Open Access Open Access  Restricted Access Subscription or Fee Access

Modeling of Valveless Piezoelectric Micropump for Insulin Delivery System

Gourav Vinayak Shet, S. M. Kulkarni, Navin Karanth P.


In order to cope up with the rising needs of micro-electro-mechanical systems (MEMS) in the fields of biological and medical applications, important progress of the micropump as one of the essential fluid handling devices to deliver precise amounts of fluids is considered. The micropump consists of two fluid diffuser/nozzle elements on each side of a chamber volume with an oscillating diaphragm. The vibrating diaphragm produces an oscillating chamber volume, which altogether with the two fluid-flow-rectifying diffuser/nozzle elements creates a one-way fluid flow. In this paper, a SIMULINK model for the simulation of the valveless micropump is developed. The parameters of the micropump are varied in order to optimize the performance as per the application. In addition to the SIMULINK model, analysis of the piezoelectric membrane deflection is done in COMSOL to predict the performance of the micropump working. Results obtained through the developed model compare well with earlier results. The volumetric discharge versus pressure difference is used for characterizing the pump performance.


Full Text:



Wackerle M, Bigus HJ, Blumenthal TV. Micro pumps for lab technology and medicine. Final presentation of the project µ-DOS.Munich: Fraunhofer IZM; 2006.

Nisar A, Afzulpurkar N, Mahaisavariya B, et al. MEMS based micropumps in drug delivery and biomedical applications. Sensors and Actuators B. 2008; 130: 917–42p.

Jang LS, Kan WH. Peristaltic piezoelectric micropump system for biomedical applications. Biomed Microdevices. 2007; 9: 619–26p.

Lee CY, Chang HT, Wen CY. A MEMS-based valveless impedance pump utilizing electromagnetic actuation. J Micromech Microeng. 2008; 18: 1–9p.

Yang YJ, Liao HH. Development and characterization of thermopneumatic peristaltic micropumps. J Micromech Microeng. 2009; 19: 1–13p.

Nguyen NT, Huang XY, Chuan TK. MEMS-micropumps. J Fluids Eng Trans ASME. 2002; 124: 384–92p.

Laser DJ, Santiago JG. A review of micropumps. J Micromech Microeng. 2004; 14: R35–R64.

Iverson BD, Garimella SV. Recent advances in microscale pumping technologies: a review and evaluation. Microfluid Nanofluid. 2008; 5: 145–74p.

Nabavi M. Steady and unsteady flow analysis in microdiffusers. Microfluid Nanofluid. 2009; 7: 599–619p.

Moritz H, Stubbe M, Gimsa J. ac-field-induced fluid pumping in microsystems with asymmetric temperature gradients. Phys Rev. 2009; 79(2): 026309p.

Kim EG, Oh JG, Choi B. A study on the development of a continuous peristaltic micropump using magnetic fluids. Sensors and Actuators - Part A. 2006; 128: 43–51p.

van Lintel HTG, van de Pol FCM, Bouwstra S. A piezoelectric micropump based on micromachining of silicon. Sens Actuators. 1988; 15: 153–67p.

Stemme E, Stemme G. A valveless diffuser /nozzlebased fluid pump. Sensors and Actuators - Part A. 1993; 39: 159–67p.

Ullmann A. The piezoelectric valve-less pump-performance enhancement analysis. Sensors and Actuators A. 1998; 69: 97–105p.

Ramaswamy N, Karanth N, Kulkarni SM, et al. Modeling of Micropump Performance and Optimization of Diaphragm Geometry. IJCA. 2011; 5: 14–9p.

Yao Q, Xu D, Pan LS, et al. CFD Simulations of flows in valveless micropumps. Engineering Applications of Computational Fluid Mechanics. 2007; 1(3): 181–8p.

Bohnet J, Schmitz M, Kamlot S, et al. Dosing Accuracy and Insulin Flow Rate Characteristics of a New Disposable Insulin Pen, FlexTouch, Compared with SoloSTAR. Journal of Diabetes Science and Technology. 2013; 7(4): 1021–6p.



  • There are currently no refbacks.