Finger-actuated micropump of constant flow rate without backflow

Ahmad, NurFarrahain Nadia and Nik Ghazali, Nik Nazri and Rani, Ahmad Taufiq Abdul and Othman, Mohammad Hafiz and Kee, Chia Ching and Jiwanti, Prastika Krisma and Rodriguez-Gomez, Arturo and Wong, Yew Hoong (2023) Finger-actuated micropump of constant flow rate without backflow. Micromachines, 14 (4). ISSN 2072-666X, DOI

Full text not available from this repository.


This paper presents a finger-actuated micropump with a consistent flow rate and no backflow. The fluid dynamics in interstitial fluid (ISF) extraction microfluidics are studied through analytical, simulation, and experimental methods. Head losses, pressure drop, diodocity, hydrogel swelling, criteria for hydrogel absorption, and consistency flow rate are examined in order to access microfluidic performance. In terms of consistency, the experimental result revealed that after 20 s of duty cycles with full deformation on the flexible diaphragm, the output pressure became uniform and the flow rate remained at nearly constant levels of 2.2 mu L/min. The flow rate discrepancy between the experimental and predicted flow rates is around 22%. In terms of diodicity, when the serpentine microchannel and hydrogel-assisted reservoir are added to the microfluidic system integration, the diodicity increases by 2% (Di = 1.48) and 34% (Di = 1.96), respectively, compared to when the Tesla integration (Di = 1.45) is used alone. A visual and experimentally weighted analysis finds no signs of backflow. These significant flow characteristics demonstrate their potential usage in many low-cost and portable microfluidic applications.

Item Type: Article
Uncontrolled Keywords: Microfluidic; Finger-actuated micropump; Tesla vale; Flow rate; Diodicity
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Faculty of Engineering > Department of Mechanical Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 01 Dec 2023 13:22
Last Modified: 01 Dec 2023 13:22

Actions (login required)

View Item View Item