TL;DR: Using brown alga (Bifurcaria bifurcata) while in the biosynthesis of copper oxide nanoparticles of Proportions five–45 nm is described for the first time and these nanoparticles ended up observed to show high antibacterial action against two diverse strains of microbes. Down the road, in 1991, Drexler, Peterson and Pergamit https://www.directivepublications.org/journal-of-applied-nanoscience/