Second water-repellent surface modification method using ultrafast lasers

摘要

PURPOSE: A super water-repellent surface modification method using ultrafast laser is provided to improve properties and performance of the surface without a chemical surface coating processing step and to increase life time. CONSTITUTION: A super water-repellent surface modification method using ultrafast laser comprises the steps of: irradiating ultrafast laser beam on the surface of a polymer substrate containing PDMS so that a micro sized fine structure has a size less than hundreds nanometer; and modifying the surface of a polymer substrate to ensure water-repellent surface with 90 ~ 170 contact angle and sliding angle less than 3.