Study on the influence of Fs-laser power on the entrance morphology of vessel microfluidic chips

Bangfu Wang; Zhongwang Wang; Wenyu Ding; Juan Song

doi:10.1117/12.2519714

29 March 2019 Study on the influence of Fs-laser power on the entrance morphology of vessel microfluidic chips

Bangfu Wang, Zhongwang Wang, Wenyu Ding, Juan Song

Proceedings Volume 11046, Fifth International Symposium on Laser Interaction with Matter; 110461U (2019) https://doi.org/10.1117/12.2519714
Event: Fifth International Symposium on Laser Interaction with Matter, 2018, Changsha, China

Abstract

The law of energy conservation and the heat conduction equation were used to study the influence characteristics of the fs-laser power density on the entrance morphology of vessel micro-channels. Meanwhile, PMMA basis material of fs-laser irradiation was studied in this research, and the theoretical analysis model was established to deduce the relational expression between laser power and the melting temperature of PMMA basis material. The finite element software was adopted to make a simulation analysis of the temperature field changes of PMMA basis material at micro-channel entrance when the fs-laser was set at different powers. In addition, the ultra-field depth digital 3D microscope, scanning electronic microscope (herein referred to as SEM) and white light interferometer were also used to test and analyze the influence of fs-laser at different powers on the morphological and structural characteristics of the post-irradiation PMMA basis material. Test results showed that: PMMA melting conditions could be satisfied but the thermal conditions could not be met at the laser power (1W) and the spot radius (1mm). The processed micro-channel entrance was round and good in surface quality.

Citation Download Citation

Bangfu Wang, Zhongwang Wang, Wenyu Ding, and Juan Song "Study on the influence of Fs-laser power on the entrance morphology of vessel microfluidic chips", Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 110461U (29 March 2019); https://doi.org/10.1117/12.2519714

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KEYWORDS

Polymethylmethacrylate

Laser irradiation

Microfluidics

Analytical research

Microscopes

Polymers

Tantalum

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