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

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.
Authors:
;  [1] ; ; ;  [2] ;  [3] ;  [4] ;  [1] ;  [5]
  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)
  5. (Korea, Republic of)
Publication Date:
OSTI Identifier:
22398955
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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