Transition from superhydrophilic to superhydrophobic of silicon water by a combination of laser treatment and fluoropolymer deposition

0492626 - FZÚ 2019 RIV GB eng J - Journal Article
Starinskiy, S.V. - Bulgakov, Alexander - Gatapova, E.Y. - Shukhov, Y.G. - Sulyaeva, V.S. - Timoshenko, N.I. - Safonov, A.I.
Transition from superhydrophilic to superhydrophobic of silicon water by a combination of laser treatment and fluoropolymer deposition.
Journal of Physics D-Applied Physics. Roč. 51, č. 25 (2018), s. 1-7, č. článku 255307. ISSN 0022-3727. E-ISSN 1361-6463
R&D Projects: GA MŠMT LO1602; GA ČR GA16-12960S; GA MŠMT EF15_003/0000445
Grant - others:OP VVV - BIATRI(XE) CZ.02.1.01/0.0/0.0/15_003/0000445
Institutional support: RVO:68378271
Keywords : superhydrophilic * superhydrophobic * fluoropolymer * laser treatment * HWCVD
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 2.829, year: 2018

We propose a novel approach for synthesizing silicon surfaces ensuring arbitrary apparent contact angle within the range from 0 degrees to 170 degrees for water. Superhydrophilicity of silicon substrates is achieved by nanosecond laser treatment and subsequent change in the contact angle is obtained by deposition of fluoropolymer films with different thicknesses by a hot wire chemical vapor deposition (HWCVD) method. The deposited film thickness needed to obtain superhydrophobicity was determined. The wettability properties of the produced fluoropolymer-silicon system are analyzed using the Wenzel and Cassie theories.
Permanent Link: http://hdl.handle.net/11104/0286078