Assessment of PMMA and polystyrene based microfluidic chips fabricated using CO2 laser machining

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buir.contributor.authorBilican, İsmail
buir.contributor.authorGüler, Mustafa Tahsin
dc.citation.volumeNumber534en_US
dc.contributor.authorBilican, İsmail
dc.contributor.authorGüler, Mustafa Tahsin
dc.date.accessioned2021-02-19T11:34:31Z
dc.date.available2021-02-19T11:34:31Z
dc.date.issued2020-08-19
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractLaser machining could be an alternative way for the fabrication of microchannels. In this study, laser machining of polymethylmethacrylate (PMMA) and polystyrene (PS) substrates were characterized in detail. A fabrication method preventing leakage at PS microchannel inlets was developed. The effect of laser parameters (power, speed and frequency) on engraving was analyzed by scanning electron microscopy. Laser ablation mechanism of both materials was explained through thermal analysis and material properties. Defocusing the laser beam was also analyzed as an additional parameter affecting the channel profile. Two parameters affecting the resolution were analyzed which are the minimum channel size that can be achieved by the laser beam and x-y stage of the laser engraver for straight and complex microchannel geometries. The hydrophilicity of the surface before and after laser machining was tested with contact angle measurements. The capabilities/limitations of machining were revealed through some complex channel structures. Finally, a passive micromixer and a droplet generator microfluidic devices were manufactured and tested, and promising results were obtained.en_US
dc.embargo.release2022-08-19
dc.identifier.doi10.1016/j.apsusc.2020.147642en_US
dc.identifier.issn0169-4332
dc.identifier.urihttp://hdl.handle.net/11693/75495
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttps://doi.org/10.1016/j.apsusc.2020.147642en_US
dc.source.titleApplied Surface Scienceen_US
dc.subjectMicrochannelsen_US
dc.subjectPMMAen_US
dc.subjectPolystyreneen_US
dc.subjectCO2 laseren_US
dc.titleAssessment of PMMA and polystyrene based microfluidic chips fabricated using CO2 laser machiningen_US
dc.typeArticleen_US
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