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Finger-actuated micropump of constant flow rate without backflow

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, criteri...

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Main Authors: Ahmad, NurFarrahain Nadia, Nik Ghazali, Nik Nazri, Rani, Ahmad Taufiq Abdul, Othman, Mohammad Hafiz, Kee, Chia Ching, Jiwanti, Prastika Krisma, Rodriguez-Gomez, Arturo, Wong, Yew Hoong
Format: Article
Published: MDPI 2023
Subjects:
T Technology (General)
TJ Mechanical engineering and machinery
Online Access:http://eprints.um.edu.my/38322/
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spelling my.um.eprints.383222023-12-01T13:22:46Z http://eprints.um.edu.my/38322/ Finger-actuated micropump of constant flow rate without backflow Ahmad, NurFarrahain Nadia Nik Ghazali, Nik Nazri Rani, Ahmad Taufiq Abdul Othman, Mohammad Hafiz Kee, Chia Ching Jiwanti, Prastika Krisma Rodriguez-Gomez, Arturo Wong, Yew Hoong T Technology (General) TJ Mechanical engineering and machinery 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. MDPI 2023-04 Article PeerReviewed 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 https://doi.org/10.3390/mi14040881 <https://doi.org/10.3390/mi14040881>. 10.3390/mi14040881
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic T Technology (General)
TJ Mechanical engineering and machinery
spellingShingle T Technology (General)
TJ Mechanical engineering and machinery
Ahmad, NurFarrahain Nadia
Nik Ghazali, Nik Nazri
Rani, Ahmad Taufiq Abdul
Othman, Mohammad Hafiz
Kee, Chia Ching
Jiwanti, Prastika Krisma
Rodriguez-Gomez, Arturo
Wong, Yew Hoong
Finger-actuated micropump of constant flow rate without backflow
description 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.
format Article
author Ahmad, NurFarrahain Nadia
Nik Ghazali, Nik Nazri
Rani, Ahmad Taufiq Abdul
Othman, Mohammad Hafiz
Kee, Chia Ching
Jiwanti, Prastika Krisma
Rodriguez-Gomez, Arturo
Wong, Yew Hoong
author_facet Ahmad, NurFarrahain Nadia
Nik Ghazali, Nik Nazri
Rani, Ahmad Taufiq Abdul
Othman, Mohammad Hafiz
Kee, Chia Ching
Jiwanti, Prastika Krisma
Rodriguez-Gomez, Arturo
Wong, Yew Hoong
author_sort Ahmad, NurFarrahain Nadia
title Finger-actuated micropump of constant flow rate without backflow
title_short Finger-actuated micropump of constant flow rate without backflow
title_full Finger-actuated micropump of constant flow rate without backflow
title_fullStr Finger-actuated micropump of constant flow rate without backflow
title_full_unstemmed Finger-actuated micropump of constant flow rate without backflow
title_sort finger-actuated micropump of constant flow rate without backflow
publisher MDPI
publishDate 2023
url http://eprints.um.edu.my/38322/
_version_ 1784511839121440768
score 13.211869

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