Static and transient response analysis of a piezoelectric actuator driven diaphragm pico-liter pump

Yasser Anis, Deirdre Meldrum

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

We present a study for the static and dynamic performance of piezo-actuated diaphragm pumps, equipped with capillary micropipettes with small orifices. The micropipettes are used for the manipulation of individual microparticles and bacteria cells. These pumps aspirate and dispense volumes of fluid between 500 pL and 250 nL at flow rates up to 250 nL/s. When a pump is equipped with a capillary micropipette of a small orifice diameter, the fluidic resistance increases causing a delayed response that increases the risk of losing the manipulated particle. A mathematical model of the pump was developed, where the effect of the diaphragm stiffness on the pump transient response and volumetric displacement were investigated. The diaphragm stiffness is represented by its material and thickness. The response time decreases with the increase of the diaphragm thickness or the diaphragm material modulus of elasticity. However, a stiffer diaphragm causes a decrease in the maximum fluidic volume the pump can displace.

Original languageEnglish (US)
Title of host publication2012 4th IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics, BioRob 2012
Pages652-656
Number of pages5
DOIs
StatePublished - Oct 18 2012
Event2012 4th IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics, BioRob 2012 - Rome, Italy
Duration: Jun 24 2012Jun 27 2012

Publication series

NameProceedings of the IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics
ISSN (Print)2155-1774

Other

Other2012 4th IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics, BioRob 2012
CountryItaly
CityRome
Period6/24/126/27/12

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ASJC Scopus subject areas

  • Artificial Intelligence
  • Biomedical Engineering
  • Mechanical Engineering

Cite this

Anis, Y., & Meldrum, D. (2012). Static and transient response analysis of a piezoelectric actuator driven diaphragm pico-liter pump. In 2012 4th IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics, BioRob 2012 (pp. 652-656). [6290823] (Proceedings of the IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics). https://doi.org/10.1109/BioRob.2012.6290823