Rispandi received his M.S. degree from the Department of Mechanical Engineering, Ming Chi University of Technology (MCUT), Taiwan, in 2023. He is currently working as a lecturer in the Department of Mechanical Engineering, Faculty of Engineering, Universitas Andalas, West Sumatera, Indonesia. His research interests are in the fields of optical sensor technology, electrospun fibers, silicone 3D printers, and organic molecules based on gas sensors.

Manna Septriani Simanjuntak received her B.S. and M.S. degrees from the Department of Mechanical Engineering at the University of Bengkulu, Indonesia, and Ming Chi University of Technology, Taiwan, in 2022 and 2023, respectively. She is currently studying for a Ph.D. in Biomedical Engineering and Medical Devices at Ming Chi University of Technology, Taiwan. Her research interests include optical sensors, gas sensing, and the application of nanofiber.

Cheng-Shane Chu received his M.S. and Ph.D. from the Mechanical Engineering Department at National Cheng Kung University, Taiwan, in 2004 and 2009, respectively. He has been a member of the Mechanical Engineering Department at Ming Chi University of Technology since 2010, where he is now a professor. His research interests include optical techniques in precision measurements and developing, optimizing, and characterizing novel optical sensors for industrial, biological, and environmental applications.