Hydrophobic property of magnesium fluoride thin film coating
Abstract
Low index magnesium fluoride (MgF2, n = 1.34) thin film coating is investigated for its hydrophobic property. An effective measure of the hydrophobicity of a surface is the contact angle of a liquid droplet on the surface, which also predicts the surface energy. MgF2-coated glass is found to have large contact angle as compared to an uncoated glass. MgF2 thin film coating does not significantly change the optical transmittance property of the glass which makes it a possible hydrophobic coating for windshield application.
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