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Aerosol‐deposited Al 2 O 3 /PTFE hydrophobic coatings with adjustable transparency
Author(s) -
Kim IkSoo,
Cho MyungYeon,
Jeong Yohan,
Shin YunCheol,
Lee DongWon,
Park Chulhwan,
Koo SangMo,
Ho Shin Weon,
Yang WonJik,
Park Yeol,
Sohn Hiesang,
Oh JongMin
Publication year - 2021
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17609
Subject(s) - opacity , materials science , transmittance , polytetrafluoroethylene , coating , transparency (behavior) , composite material , composite number , deposition (geology) , superhydrophobic coating , optics , optoelectronics , computer science , paleontology , physics , computer security , sediment , biology
With the wide range of requirements for architectural glass, such as transparency, opacity, and hydrophobicity, there is a need to address the issues in the complexity of convention methods. Thus, considering functionality and applicability in various architectural windows, hydrophobic alumina/polytetrafluoroethylene (Al 2 O 3 /PTFE) composite layers with transparency or opacity were transferred to commercial architectural glass using a facile aerosol deposition (AD) process. We successfully fabricated hydrophobic coating layers with high transmittance (only a 0.03% difference from sheet glass) by optimizing the PTFE content in Al 2 O 3 using solution‐based synthesized powders to enable a uniform surface topology. The opaque hydrophobic Al 2 O 3 /PTFE coating layers exhibit a transmittance of approximately 0% with excellent hydrophobicity of 130°. Remarkably, this opaque film was successfully employed onto a large deposition area, curved substrate, and micro‐patterned regions. It is believed that our AD‐prepared composite layers have great potential for architectural glass in terms of economic feasibility and versatility.