NDLI: Coalescence of droplets on micro-structure patterned hydrophobic planar solid surfaces

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhu, Guiping Huang, Hulin Fan, Hui Duan, Fei
Copyright Year	2017
Abstract	The motion and coalescence of sessile liquid droplets on patterned solid surfaces are investigated systematically in terms of the liquid and substrate surface properties. A patterned silicon surface is decorated with circular pillars. The fabrication of the substrate is carried out by following standard photolithography. A thin photoresist layer of AZ-9260 on the pillars makes the surface exhibit superhydrophobic properties. The pillars are obtained using a deep reactive-ion etching process. Due to the deposited material and the increment of surface roughness, the liquid wetting behavior varies dramatically. The wetting properties of deionized water droplets on the patterned surface are examined to improve the understanding of the coalescence process. The coalescence of droplets is realized using capillary force on one of the droplets sitting at the boundary of surfaces with and without micro-patterns.
Starting Page	23954
Ending Page	23960
Page Count	7
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	7
Issue Number	39
Journal	RSC Advances
DOI	10.1039/c7ra03323k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Deep reactive-ion etching Leaf Photolithography Arizona Photoresist Ultrahydrophobicity Purified water
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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Coalescence of droplets on micro-structure patterned hydrophobic planar solid surfaces