Graphene/Nanoporous Silica: Smart Antireflective & Hydrophobic Coating

By: Singh, Jarnail

This study develops a single-layer broadband and wide-angle antireflective (AR) coating with a hydrophobic surface to prevent environmental contamination. Porosity was introduced into the silica film matrix using an acid-catalyzed sol-gel method with polyethylene glycol (PEG) as a porosity modifier. Silica sol modified with PEG4000 achieved optimal porosity (2-4 nm) and the highest transmittance (98.2%). A graphene layer was added to enhance hydrophobicity, achieving a contact angle of 105.3 , compensating for a slight transmittance reduction (1.15%). Atomic force microscopy and field emission scanning electron microscopy confirmed increased porosity and groove-like surface morphology. Contact angle measurements indicated strong van der Waals interactions between the porous silica film and graphene, leading to a hydrophobic and anti-corrosive AR coating.

• Format: Paperback
• Language: English
• ISBN: 6208440068
• ISBN13: 9786208440060
• Release Date: April 2025
• Publisher: LAP Lambert Academic Publishing
• Length: 76 Pages
• Weight: 0.25 lbs.
• Dimensions: 0.2" x 6.0" x 9.0"