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Mitigation of bio-corrosion characteristics of coronary artery stent by optimising fs-laser micromachining parameters

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dc.citedby0
dc.contributor.authorChenrayan V.en_US
dc.contributor.authorPalanisamy D.en_US
dc.contributor.authorMani K.en_US
dc.contributor.authorShahapurkar K.en_US
dc.contributor.authorElahi M. Soudagar M.en_US
dc.contributor.authorFouad Y.en_US
dc.contributor.authorKalam M.A.en_US
dc.contributor.authorAli M.M.en_US
dc.contributor.authorNasir Bashir M.en_US
dc.contributor.authorid57197452830en_US
dc.contributor.authorid57212602031en_US
dc.contributor.authorid55682460700en_US
dc.contributor.authorid57196344622en_US
dc.contributor.authorid57194384501en_US
dc.contributor.authorid6603123645en_US
dc.contributor.authorid55103352400en_US
dc.contributor.authorid55377724600en_US
dc.contributor.authorid57210792910en_US
dc.date.accessioned2025-03-03T07:44:23Z
dc.date.available2025-03-03T07:44:23Z
dc.date.issued2024
dc.description.abstractCardiovascular diseases, particularly coronary artery disease, pose big challenges to human life. Deployment of the stent is a preferable treatment for the above-mentioned disease. However, stents are usually made up of shape memory alloy called Nitinol. The poorer surface finish on the machined nitinol stents accelerates the migration of Nickel ions from the implanted nitinol stent, which is considered toxic and can lead to stenosis. The current study deals with controlling surface quality by minimising surface roughness and improving corrosion resistance. Femtosecond laser (fs-laser 10?15 s) micromachining was employed to machine the Nitinol surface to achieve sub-micron surface roughness. The Grey relational analysis (GRA)-coupled design of the experimental technique was implemented to determine optimal levels of four micromachining parameters (laser power, pulse frequency, scanning speed, and scanning pattern) varied at three levels to achieve minimum surface roughness and to maximise the volume ablation. The results show that to yield minimum surface roughness and maximum volume ablation, laser power and scanning speed are in a higher range. In contrast, the pulse frequency is lower, and the scanning pattern is in a zig-zag manner. ANOVA results manifest that scanning speed is the predominant factor in minimising surface roughness, followed by pulse frequency. Furthermore, the corrosion behaviour of the machined nitinol specimens was evaluated, and the results show that specimens with lower surface roughness had lower corrosion rates. ? 2024 The Authorsen_US
dc.description.natureFinalen_US
dc.identifier.ArtNoe28057
dc.identifier.doi10.1016/j.heliyon.2024.e28057
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85188447029
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85188447029&doi=10.1016%2fj.heliyon.2024.e28057&partnerID=40&md5=0450dd94354fa29151fe1c350985d97a
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/36750
dc.identifier.volume10
dc.publisherElsevier Ltden_US
dc.relation.ispartofAll Open Access; Gold Open Access
dc.sourceScopus
dc.sourcetitleHeliyon
dc.titleMitigation of bio-corrosion characteristics of coronary artery stent by optimising fs-laser micromachining parametersen_US
dc.typeArticleen_US
dspace.entity.typePublication
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