A biomimetic piezoelectric pump: Computational and experimental characterization

• Published in: Sensors and actuators. A. Physical. 2009-05, Vol.152 (1), p.110-118
• Main Authors: de Lima, Cícero R., Vatanabe, Sandro L., Choi, Andres, Nakasone, Paulo Henrique, Pires, Rogério Felipe, Nelli Silva, Emílio Carlos
• Format: Article
• Language: English
• Subjects: Bimorph piezoelectric actuator; Biomimetics; Computational simulation; Experimental characterization; Micropumps; Oscillatory pump
• ISSN: 0924-4247; 1873-3069
• DOI: 10.1016/j.sna.2009.02.038

Flow pumps have been developed for classical applications in Engineering, and are important instruments in areas such as Biology and Medicine. Among applications for this kind of device we notice blood pump and chemical reagents dosage in Bioengineering. Furthermore, they have recently emerged as a viable thermal management solution for cooling applications in small-scale electronic devices. This work presents the performance study of a novel principle of a piezoelectric flow pump which is based on the use of a bimorph piezoelectric actuator inserted in fluid (water). Piezoelectric actuators have some advantages over classical devices, such as lower noise generation and ease of miniaturization. The main objective is the characterization of this piezoelectric pump principle through computational simulations (using finite element software), and experimental tests through a manufactured prototype. Computational data, such as flow rate and pressure curves, have also been compared with experimental results for validation purposes.