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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Graphene/Nanoporous Silica: Smart Antireflective & Hydrophobic Coating

Graphene/Nanoporous Silica: Smart Antireflective & Hydrophobic Coating

Singh, Jarnail

Paperback

Physics

ISBN10: 6208440068
ISBN13: 9786208440060
Publisher: LAP Lambert Academic Publishing
Published: Apr 1 2025
Pages: 76
Weight: 0.25
Height: 0.18 Width: 6.00 Depth: 9.00
Language: English
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.

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