Durability and Surface Oxidation States of Antiviral Nano-Columnar Copper Thin Films.

ABSTRACT: Antiviral coatings that inactivate a broad spectrum of viruses are important in combating the evolution and emergence of viruses. In this study, nano-columnar Cu thin films have been proposed, inspired by cicada wings (which exhibit mechano-bactericidal activity). Nano-columnar thin films of Cu and its oxides were fabricated by the sputtering method, and their antiviral activities were evaluated against envelope-type bacteriophage Φ6 and non-envelope-type bacteriophage Qβ. Among all of the fabricated films, Cu thin films showed the highest antiviral activity. The infectious activity of the bacteriophages was reduced by 5 orders of magnitude within 30 min by the Cu thin films, by 3 orders of magnitude by the Cu₂O thin films, and by less than 1 order of magnitude by the CuO thin f

SUBMITTER: Shigetoh K 

PROVIDER: S-EPMC10141257 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature