TL;DR: The usage of brown alga (Bifurcaria bifurcata) from the biosynthesis of copper oxide nanoparticles of dimensions 5–45 nm is documented for The 1st time and these nanoparticles were observed to show substantial antibacterial action from two various strains of microbes. The Nano Imaging Lab can provide a comprehensive imaging https://www.directivepublications.org/journal-of-applied-nanoscience/