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Design of Micropump with two stacked ring type piezoelectric actuators for drug delivery


The Micropump has many applications in the field of microfluidics systems where it has to handle a very small volume of fluids in a controlled manner. Applications include drug delivery and healthcare systems (Monitoring and diagnostic), microelectronic cooling devices, and many more. The main objective of this paper is to design a micropump for drug delivery applications with two Stacked ring type piezoelectric actuators (SPZT) for having a better flow rate with a low operating voltage of 90 VP-P. The Use of ring type actuator decreases the area of contact between actuator and membrane which has to be glued. A study is performed on membrane displacement by varying the inner radius of ring type SPZT actuator. The Actuator used here is the Stacked (multilayered) type which offers more strain at low voltages. All parametric study is performed using FEM numerical analysis. The proposed micropump design given a flow rate of 800(μl/min) at an operation frequency of 100 Hz.

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The authors would like to thank NMDC supported by NPMASS, Nationall Institute of Technology, Silchar for providing the necessary computational tools. We thank the anonymous referees for their useful suggestions.


The authors of the manuscript did not receive any funding, grants, or in kind support in support of the research or the preparation of the manuscript.

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Authors and Affiliations



Author 1,2 (K Girija Sravani, D Ramakrishna): Conceived and design the analysis, Contributed data and analysis tools, and wrote the paper. Author 3,4,5 (Prakash Chand,K.Satvik, K. Srinivasa Rao):Performed the analysis, Calibrated the results, Worked data analysis of the paper.

Corresponding author

Correspondence to Kondavitee Girija Sravani.

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All authors have participated in (a) conception and design, or analysis and interpretation of the data; (b) drafting the article or revising it critically for important intellectual content; and (c) approval of the final version. This manuscript has not been submitted to, nor is under review at, another journal or other publishing venue. The authors have no affiliation with any organization with a direct or indirect financial interest in the subject matter discussed in the manuscript. The following authors have affiliations with organizations with direct or indirect financial interest in the subject matter discussed in the manuscript.

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Sravani, K.G., Ramakrishna, D., Chandh, P. et al. Design of Micropump with two stacked ring type piezoelectric actuators for drug delivery. J Micro-Bio Robot 17, 69–78 (2021).

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  • Drug delivery system
  • Ring type PZT actuator
  • Stacked PZT actuator