"Oleophobic" refers to a material's ability to repel oils and fats. This property is important in various applications, such as in the manufacturing of smartphone screens and kitchenware, where it helps prevent smudges and stains from greasy substances. Oleophobic surfaces are designed to minimize the adhesion of oil-based liquids, making them easier to clean. The term comes from the Greek word "oleo," meaning oil, and "phobic," meaning fear or aversion. Oleophobic coatings are often applied to glass and plastic surfaces to enhance their durability and maintain clarity. These coatings can significantly improve the user experience by keeping surfaces cleaner for longer periods.