Biocompatibility of Soft and Hard Diamond-like Carbon Coatings for Biomedical Applications

Ioannis Anestopoulos, Mihalis I. Panayiotidis, Martin Birkett, Abdul Wasy Zia

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

Abstract

Diamond-like carbon (DLC) coatings are rapidly emerging for biomedical applications due to their superior hardness, Young’s modulus, antiwear and biocompatibility properties. DLC coatings have shown their potential to improve bio-mechanical performance of various artificial implants such as orthopaedic joints, orthodontic components, vascular grafts, stents, heart valves and diaphragms, catheters etc. The biocompatibility of DLC coatings is well investigated over other engineering materials and also for different substrate systems. However, the DLC growth which tunes its biocompatibility is not yet systematically investigated. In this work, DLC coatings are deposited with varying bias voltage using a sputtering system. The coatings are characterised to measure changes in atomic structure, hardness, and Young’s modulus. The biocompatibility of bias-varied DLC coatings is measured with L929 mouse fibroblast cells. It is observed that soft DLC coatings show better biocompatibility when compared to hard DLC coatings. Hence, hard DLC coatings may not always be the best choice, therefore, DLC with appropriate hardness should be chosen for specific biomedical applications.
Original languageEnglish
Title of host publicationProceeding of International Conference on Advances in Design, Materials and Manufacturing Technologies 2022
Subtitle of host publicationICADMMT 2022
Pages48-48
Number of pages1
Publication statusPublished - 7 Oct 2022
EventInternational Conference on Advances in Design, Materials and Manufacturing Technologies 2022 - Hotel ICON, 17 Science Museum Road, Tsim Sha Tsui East, Kowloon, Hong Kong
Duration: 6 Oct 20227 Oct 2022
https://icadmmt2022.speed-polyu.edu.hk/index.html

Conference

ConferenceInternational Conference on Advances in Design, Materials and Manufacturing Technologies 2022
Abbreviated titleICADMMT 2022
Country/TerritoryHong Kong
CityKowloon
Period6/10/227/10/22
Internet address

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