Micro-Laser Welding of Plastics for the Applications in Micro-Fluidic Devices

Abstract:

This study aims to investigate laser welding process for the bonding of micro-fluidic devices. PMMA was selected for the investigation. The devices consist of an opaque substrate with micro-channels and a transparent cover. The welding process was optimized according to laser power, welding speed and clamping pressure. The cross-sectional analysis, flow and pressure tests, as well as the lap-shear test were conducted on the samples welded with the optimized process parameters. The results show that the laser welding can meet the requirements for bonding the plastic micro-fluidic devices.

• Periodical: Key Engineering Materials (Volumes 447-448)
• Pages: 745-749
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.447-448.745
• Online since: September 2010
• Authors: Gui Jun Bi, Sum Huan Ng, Khin Thet May, Cong Zhi Chan
• Keywords: Laser Welding, Microfluidic Device, Poly(methyl methacrylate) (PMMA)

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