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Self-Cleaning Hydrophobic Nanocoating On Glass: A Scalable Manufacturing Process, Surendra Maharjan, Kang-Shyang Liao, Alexander J. Wang, Killian Barton, Amrita Haldar, Nigel J. Alley, Hugh Byrne, Seamus A. Curran
Self-Cleaning Hydrophobic Nanocoating On Glass: A Scalable Manufacturing Process, Surendra Maharjan, Kang-Shyang Liao, Alexander J. Wang, Killian Barton, Amrita Haldar, Nigel J. Alley, Hugh Byrne, Seamus A. Curran
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A method of forming a self-cleaning hydrophobic coating (SCHN) on glass substrates utilizing a scalable manufacturing process is described. The process initiates with roughening of planar glass surfaces using diamond micro-/nano-particle abrasives, which creates microscopic tortuous grooves. After cleaning the substrates, the roughened surface is vapor deposited with trichloro(1H,1H,2H,2H-perfluorooctyl)silane (TCPFOS) under enclosure with controlled humidity. TCPFOS chemically binds with the substrate via covalent linkage. Due to the greatly reduced surface tension between water and the self-cleaning surface, the water droplet slides down leaving no trail (sliding angle of 14° for 0.1 mL water droplet). Due to the reduced adhesion of …