TL;DR: The use of brown alga (Bifurcaria bifurcata) during the biosynthesis of copper oxide nanoparticles of Proportions 5–45 nm is claimed for the first time and these nanoparticles were observed to exhibit high antibacterial action versus two distinctive strains of microbes. SJR The SJR is actually a size-independent prestige indicator https://www.directivepublications.org/journal-of-applied-nanoscience/