TY - GEN
T1 - Static and transient response analysis of a piezoelectric actuator driven diaphragm pico-liter pump
AU - Anis, Yasser
AU - Meldrum, Deirdre
PY - 2012/10/18
Y1 - 2012/10/18
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84867416579&partnerID=8YFLogxK
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U2 - 10.1109/BioRob.2012.6290823
DO - 10.1109/BioRob.2012.6290823
M3 - Conference contribution
AN - SCOPUS:84867416579
SN - 9781457711992
T3 - Proceedings of the IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics
SP - 652
EP - 656
BT - 2012 4th IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics, BioRob 2012
T2 - 2012 4th IEEE RAS and EMBS International Conference on Biomedical Robotics and Biomechatronics, BioRob 2012
Y2 - 24 June 2012 through 27 June 2012
ER -