Development, Characterization, and Antimicrobial Efficacy Testing of Coatings for Medical and Engineering Applications

Abstract

Microbial contamination of surfaces remains a critical challenge across medical and engineering domains, contributing to healthcare-associated infections, material degradation, and reduced service life of components. Antimicrobial coatings have emerged as an effective strategy to inhibit microbial adhesion and proliferation while maintaining functional performance of underlying substrates. This study presents the development, physicochemical characterization, and antimicrobial efficacy evaluation of advanced functional coatings designed for dual-use applications in biomedical devices and engineering systems. Nanostructured coatings incorporating metallic and polymeric antimicrobial agents were fabricated using scalable deposition techniques. Surface morphology, chemical composition, adhesion strength, and wear resistance were systematically characterized using advanced analytical tools. Antimicrobial performance was evaluated against representative bacterial strains under controlled laboratory conditions. Long-term stability and durability of antimicrobial activity were assessed under simulated service environments. Results demonstrate that optimized coating formulations exhibit sustained antimicrobial efficacy, strong substrate adhesion, and enhanced mechanical robustness. The study highlights the potential of multifunctional antimicrobial coatings to address cross-sectoral challenges, supporting safer medical devices and contamination-resistant engineering surfaces.