Aluminum Oxide Nanoparticles in Hydrophobic Coatings: Properties, Synthesis, and Applications Introduction Aluminum oxide nanoparticles (Al²O³ NPs) are increasingly recognized for their utility in hydrophobic coatings. These coatings, which repel water and resist moisture absorption, are valuable in a variety of industrial and consumer applications. The unique properties of aluminum oxide nanoparticles, including their high surface...