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A Fast and Facile Fabrication of PTFE Based Superhydrophobic and Ultra Wideband Angle Insensitive Anti‐Reflection Coatings
Author(s) -
De Rajnarayan,
Misal Jitendra S.,
Shinde Deepak D.,
Polaki Shyam R.,
Singh Ranveer,
Som Tapobrata,
Sahoo Naba K.,
Rao K. Divakar
Publication year - 2018
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201800041
Subject(s) - materials science , contact angle , fabrication , polytetrafluoroethylene , coating , electron beam physical vapor deposition , deposition (geology) , superhydrophobic coating , evaporation , transmittance , reflection (computer programming) , anti reflective coating , optics , wideband , optoelectronics , composite material , nanotechnology , chemical vapor deposition , medicine , paleontology , alternative medicine , thermodynamics , physics , pathology , sediment , computer science , biology , programming language
Superhydrophobic (water contact angle ≈168° and sliding angle ≈1°) and ultra‐wideband (entire visible to near infrared, i.e., 400–1100 nm), omnidirectional (0–60°) anti‐reflecting ( T max ≈98% and T avg ≈97%) polytetrafluoroethylene (PTFE) coatings are fabricated in a rapid single step deposition process by electron beam evaporation technique. The methodology followed in this work avoids conventional complicated multistep chemical processes and reduces the deposition time to ≈3 s. This novel coating strategy may be of potential use in fabricating highly transparent multifunctional optical coatings on glass cover panels with excellent self‐cleaning property for various outdoor applications.