ULTRAFAST LASER-INDUCED SURFACE STRUCTURING OF ANTI-FOULING STEEL SURFACES FOR BIOMEDICAL APPLICATIONS

Abhijit Cholkar, Ronan McCann, David Kinahan, Dermot Brabazon

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Metallic surfaces are increasingly used in medical applications due to their favorable material properties such as high strength and biocompatibility. In medical applications antifouling properties are an important requirement especially for implants and medical devices which come into contact with different types of fluid streams. These should be anti-fouling in order to prevent contamination and corrosion. Laser processing methods such as ultrafast laser processing is a one-step and scalable process for surface texturing. This process can be used to produce well-defined surface nano- and microscale superficial textures such as Laser-induced Periodic Surface Structures (LIPSS) which can enhance the anti-fouling capability of the surface. In this study, micro and nano scaled LIPSS structures are manufactured on a biocompatible grade stainless steel 316L substrate using an ultrafast (<370 fs) and low power (<4 W) laser system. With an aim to optimize the anti-fouling properties, laser process parameters such as pulse energy, pulse repetition rate and beam scanning speed were varied to produce microstructures on the stainless-steel surface of varying dimensions. Surface roughness was analyzed using a laser surface profilometer and changes in the hydrophobicity were examined using water contact angle goniometry.

Original languageEnglish
Title of host publicationAdditive Manufacturing; Biomanufacturing; Life Cycle Engineering; Manufacturing Equipment and Automation; Nano/Micro/Meso Manufacturing
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791885802
DOIs
Publication statusPublished - 2022
Externally publishedYes
EventASME 2022 17th International Manufacturing Science and Engineering Conference, MSEC 2022 - West Lafayette, United States
Duration: 27 Jun 202201 Jul 2022

Publication series

NameProceedings of ASME 2022 17th International Manufacturing Science and Engineering Conference, MSEC 2022
Volume1

Conference

ConferenceASME 2022 17th International Manufacturing Science and Engineering Conference, MSEC 2022
Country/TerritoryUnited States
CityWest Lafayette
Period27/06/202201/07/2022

Keywords

  • antifouling
  • biomedical
  • femtosecond laser processing
  • Laser processing
  • microscale texture
  • stainless steel
  • surface structuring
  • ultrafast

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