Berlin 2024 – scientific programme

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DS: Fachverband Dünne Schichten

DS 20: Poster II

DS 20.17: Poster

Thursday, March 21, 2024, 18:00–20:30, Poster D

Biocompatible High-Entropy Alloys Thin Films with Antibacterial Properties — •Anna Benediktová, Lucie Nedvědová, and Ján Minár — New Technologies - Research Centre, University of West Bohemia, Plzeň, Czech Republic

High-entropy alloys (HEAs) represent an intensively studied group of metallic materials. Due to their unique properties and their potential to be very stable, wear-resistant, and hard, in addition to the possibility of tailoring some of their properties, HEAs have also become the subject of study as biomaterials. Commonly used metal biomaterials for implants still have many drawbacks such as low wear and corrosion resistance or lack of antibacterial properties, which can even result in the loss of the implant. In the case of porous polymer implants used in maxillofacial and plastic surgery, there is excellent ingrowth of soft tissues, but not osseointegration, which could be solved by applying a suitable implant coating. To improve the surface properties, novel HEAs thin films, with various amounts of silver to achieve antibacterial properties, have been prepared by magnetron sputtering, and their structure has been determined using scanning and transmission electron microscopy. Various substrates have been used such as cp-Ti or HDPE.

Keywords: biomaterials; antibacterial properties; high-entropy alloys; magnetron sputtering