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Open AccessArticle

The Influence of Laser Ablation Parameters on the Holes Structure of Laser Manufactured Graphene Paper Microsieves

1
Institute of Optoelectronics, Military University of Technology, gen. S. Kaliskiego 2, 00-908 Warsaw, Poland
2
Faculty of Mechanical Engineering, Military University of Technology, gen. S. Kaliskiego 2, 00-908 Warsaw, Poland
3
Łukasiewicz Research Network–Institute of Electronic Materials Technology, Department of Chemical Synthesis and Flake Graphene; Wólczyńska 133, 01-919 Warsaw, Poland
*
Author to whom correspondence should be addressed.
Materials 2020, 13(7), 1568; https://doi.org/10.3390/ma13071568
Received: 6 March 2020 / Revised: 25 March 2020 / Accepted: 27 March 2020 / Published: 28 March 2020
(This article belongs to the Special Issue Laser Materials Processing 2019)
The graphene paper microsieves can be applied in the filtration of biological fluids or separation of solid particles from exploitation fluids. To produce graphene paper microsieves for specific applications, good control over fabrication should be achieved. In this study, a laser ablation method using a picosecond laser was applied to fabricate graphene paper microsieves. Holes in the microsieves were drilled using pulsed laser radiation with a pulse energy from 5 to 100 µJ, a duration of 60 ps, a wavelength of 355 nm, and a repetition rate of 1 kHz. The impact method was applied using 10 to 100 pulses to drill one hole. To produce holes of a proper diameter which could separate biological particles of a certain size (≥10 µm), optimum parameters of graphene paper laser ablation were defined using the MATLAB software taking into account laser pulse energy, repetition rate, and a desired hole diameter. A series of structural tests were carried out to determine the quality of an edge and a hole shape. Experimental results and Laguerre–Gauss calculations in MATLAB were then compared to perform the analysis of the distribution of diffraction fringes. Optimum experimental parameters were determined for which good susceptibility of the graphene paper to laser processing was observed. View Full-Text
Keywords: graphene paper; graphene paper microsieves; picosecond laser; laser ablation; laser manufacturing graphene paper; graphene paper microsieves; picosecond laser; laser ablation; laser manufacturing
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Nasiłowska, B.; Bogdanowicz, Z.; Sarzyński, A.; Skrzeczanowski, W.; Djas, M.; Bartosewicz, B.; Jankiewicz, B.J.; Lipińska, L.; Mierczyk, Z. The Influence of Laser Ablation Parameters on the Holes Structure of Laser Manufactured Graphene Paper Microsieves. Materials 2020, 13, 1568.

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