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This volume presents a curated collection of research exploring recent advances in coating materials and their applications across structural, electronic, biomedical, and sensing fields. The studies compiled here emphasize the critical role of surface engineering in enhancing material performance under extreme conditions-be it thermal shock, corrosion, radiation, or mechanical stress. Emerging deposition strategies and modeling techniques are coupled with in-depth experimental validation, offering insights into microstructural control, phase stability, and interfacial behavior.

The reprint highlights progress in both fundamental understanding and practical application, from improving thermal barrier coatings and protective films to refining electrochemical sensors and guided wave technologies. Innovations in nanostructured materials, thin-film epitaxy, and fiber-reinforced composites demonstrate how multidisciplinary approaches can yield robust, reliable, and highly functional surfaces. Equally, the development of streamlined biocompatibility assays and predictive maintenance frameworks reflects a growing emphasis on cost-effective, scalable solutions in real-world systems. Together, these contributions underscore the dynamic interplay between materials science, process optimization, and performance evaluation, providing valuable guidance for researchers and practitioners.