Wetting state on hydrophilic and hydrophobic micro-textured surfaces: Thermodynamic analysis and X-ray visualization

Journal Article · Mon Apr 27 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4919136· OSTI ID:22398955

Yu, Dong In; Kwak, Ho Jae ^[1]; Doh, Seung Woo; Kiyofumi, Moriyama ^[2]; Kang, Hie Chan ^[3]; Ahn, Ho Seon ^[4]; Kim, Moo Hwan ^[1]

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1. Department of Mechanical Engineering, POSTECH, Pohang 790-784 (Korea, Republic of)
2. Division of Advanced Nuclear Engineering, POSTECH, Pohang 790-794 (Korea, Republic of)
3. School of Mechanical and Automotive Engineering, Kunsan National University, Kunsan 573-701 (Korea, Republic of)
4. Division of Mechanical System Engineering, Incheon National University, Incheon 406-772 (Korea, Republic of)

In this study, the wetting state on hydrophobic and hydrophilic micro-textured surfaces was investigated. High spatial resolution synchrotron X-ray radiography was used to overcome the limitations in visualization in previous research and clearly visualize the wetting state for each droplet under quantified surface conditions. Based on thermodynamic characteristics, a theoretical model for wetting state depending on the chemical composition (intrinsic contact angle) and geometrical morphology (roughness ratio) of the surfaces was developed.

• OSTI ID: 22398955
• Journal Information: Applied Physics Letters, Vol. 106, Issue 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHEMICAL COMPOSITION
DROPLETS
MATHEMATICAL MODELS
MORPHOLOGY
ROUGHNESS
SPATIAL RESOLUTION
SURFACES
SYNCHROTRON RADIATION
TEXTURE
THERMODYNAMIC PROPERTIES
WETTABILITY
X-RAY RADIOGRAPHY