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Micromachines
Volume 8
Issue 6
10.3390/mi8060185
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Article

Lithium Niobate Micromachining for the Fabrication of Microfluidic Droplet Generators

by
Giacomo Bettella
1,†,
Gianluca Pozza
1,†,
Sebastian Kroesen
2,
Riccardo Zamboni
1,
Enrico Baggio
1,
Carlo Montevecchi
1,
Annamaria Zaltron
1,
Ludovic Gauthier-Manuel
3,
Giampaolo Mistura
1,
Claudio Furlan
4,
Mathieu Chauvet
3,
Cornelia Denz
2 and
Cinzia Sada
1,*
1
Physics and Astronomy Department, University of Padova, Via Marzolo 8, 35131 Padova, Italy
2
Nonlinear Photonics Group, Institute of Applied Physics, University of Münster Corrensstrasse 2/4, 48149 Münster, Germany
3
FEMTO-ST Institute, UMR 6174, University of Bourgogne Franche-Comté, 15B Avenue des Montboucons, 25000 Besançon, France
4
CEASC at University of Padova, Via Jappelli 1, 35131 Padova, Italy
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Micromachines 2017, 8(6), 185; https://doi.org/10.3390/mi8060185
Submission received: 9 March 2017 / Revised: 22 May 2017 / Accepted: 31 May 2017 / Published: 9 June 2017
(This article belongs to the Special Issue Ultrafast Laser Fabrication for Lab-on-a-Chip)
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Abstract

In this paper, we present the first microfluidic junctions for droplet generation directly engraved on lithium niobate crystals by micromachining techniques, preparatory to a fully integrated opto-microfluidics lab-on-chip system. In particular, laser ablation technique and the mechanical micromachining technique are exploited to realise microfluidic channels in T- and cross junction configurations. The quality of both lateral and bottom surfaces of the channels are therefore compared together with a detailed study of their roughness measured by means of atomic force microscopy in order to evaluate the final performance achievable in an optofluidic device. Finally, the microfluidics performances of these water-in-oil droplets generators are investigated depending on these micromachining techniques, with particular focus on a wide range of droplet generation rates.
Keywords: microfluidics; droplets; lithium niobate; micromachining; laser ablation; femtosecond; dicing microfluidics; droplets; lithium niobate; micromachining; laser ablation; femtosecond; dicing

Share and Cite

MDPI and ACS Style

Bettella, G.; Pozza, G.; Kroesen, S.; Zamboni, R.; Baggio, E.; Montevecchi, C.; Zaltron, A.; Gauthier-Manuel, L.; Mistura, G.; Furlan, C.; et al. Lithium Niobate Micromachining for the Fabrication of Microfluidic Droplet Generators. Micromachines 2017, 8, 185. https://doi.org/10.3390/mi8060185

AMA Style

Bettella G, Pozza G, Kroesen S, Zamboni R, Baggio E, Montevecchi C, Zaltron A, Gauthier-Manuel L, Mistura G, Furlan C, et al. Lithium Niobate Micromachining for the Fabrication of Microfluidic Droplet Generators. Micromachines. 2017; 8(6):185. https://doi.org/10.3390/mi8060185

Chicago/Turabian Style

Bettella, Giacomo, Gianluca Pozza, Sebastian Kroesen, Riccardo Zamboni, Enrico Baggio, Carlo Montevecchi, Annamaria Zaltron, Ludovic Gauthier-Manuel, Giampaolo Mistura, Claudio Furlan, and et al. 2017. "Lithium Niobate Micromachining for the Fabrication of Microfluidic Droplet Generators" Micromachines 8, no. 6: 185. https://doi.org/10.3390/mi8060185

APA Style

Bettella, G., Pozza, G., Kroesen, S., Zamboni, R., Baggio, E., Montevecchi, C., Zaltron, A., Gauthier-Manuel, L., Mistura, G., Furlan, C., Chauvet, M., Denz, C., & Sada, C. (2017). Lithium Niobate Micromachining for the Fabrication of Microfluidic Droplet Generators. Micromachines, 8(6), 185. https://doi.org/10.3390/mi8060185

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