Abstract—Various types of strain sensors have been
developed for providing reliable monitoring of human health.
Microfluidic strain sensors is favourable for such an
application due to its outstanding performance under a variety
of three-dimensional deformations on the basis of elastic
channel deformation. In this study, we report for the first time
laser-machined micro-channels on fabricated epoxy substrate.
Fabrication of flexible microfluidic sensor using soft clear
epoxy is investigated. A ratio of 100:30 of epoxy
resin-to-hardener results in a flexible and elastic epoxy layer.
Laser micromachining (ablation) technique at varying
parameters is conducted using Taguchi Experimental Design.
Low number of passes for both kerf depth and kerf width gives
an optimum response, while laser power and laser cutting
speed differs for kerf width and kerf depth. Microstructure
imaging is carried out using scanning electron microscopy for
heat-affected zone examination.
Index Terms—Microfluidic, strain sensor, laser,
micromachining, motion, tracking, flexible, wearable.
Khairul Fikri Tamrin, Nurul Amirah Khalid, and Andrew Ragai Henry
Rigit are with the Department of Mechanical and Manufacturing Engineering,
Faculty of Engineering, Universiti Malaysia Sarawak 94300 Kota Samarahan,
Sarawak, Malaysia (e-mail: tkfikri@unimas.my, arigit@unimas.my).
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Cite: Khairul Fikri Tamrin, Nurul Amirah Khalid, and Andrew Ragai Henry Rigit, "Fabrication of Flexible Microfluidic Strain Sensor by Laser Micromachining for Hand Motion Tracking," International Journal of Materials, Mechanics and Manufacturing vol. 8, no. 3, pp. 138-142, 2020.
Copyright © 2020 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (
CC BY 4.0).
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