Premium
Significant change in water contact angle of electrospray‐synthesized SiO 2 films depending on their surface morphology
Author(s) -
Kim EunKyeong,
Kim JiYeong,
Kim Sang Sub
Publication year - 2013
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5112
Subject(s) - contact angle , morphology (biology) , electrospray , amorphous solid , materials science , chemical engineering , chemistry , crystallography , composite material , mass spectrometry , chromatography , geology , paleontology , engineering
Amorphous SiO 2 films were deposited by means of an electrospray technique. The relation between the water contact angle (WCA) of the deposited SiO 2 films and the surface morphology is investigated. The feeding rate of the electrospray process greatly affects the morphology of the synthesized SiO 2 films. There is also a significant change in the WCA on the surface of the films: the rougher the surface, the greater the WCA. A model based on the Cassie–Baxter formulation is used to explain the change observed in the WCA on the SiO 2 films. Copyright © 2012 John Wiley & Sons, Ltd.