TL;DR: Using brown alga (Bifurcaria bifurcata) during the biosynthesis of copper oxide nanoparticles of dimensions five–forty five nm is documented for the first time and these nanoparticles ended up observed to exhibit high antibacterial activity towards two unique strains of germs. In a while, in 1991, Drexler, Peterson and Pergamit https://www.directivepublications.org/journal-of-applied-nanoscience/