University of Illinois Urbana-Champaign

Simulation and experimentation of droplets on micro-patterned surfaces

Liu, Banglin

Content Files
Banglin_Liu.pdf

Permalink

https://hdl.handle.net/2142/72821

Description

Title
Simulation and experimentation of droplets on micro-patterned surfaces
Author(s)
Liu, Banglin
Issue Date
2015-01-21
Director of Research (if dissertation) or Advisor (if thesis)
  • Hsia, K. Jimmy
  • Hilgenfeldt, Sascha
Department of Study
Mechanical Sci & Engineering
Discipline
Mechanical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Date of Ingest
2015-01-21T19:48:32Z
Keyword(s)
  • Wetting
  • Droplets
  • Patterned-Surfaces
  • Surface Evolver
  • Force Measurements
Abstract
We developed a robust simulation tool that provided energetic and geometric information of droplets deposited on patterned surfaces. Deformation of the droplet in response to discrete features in the contact plane was examined and quantified on an energy basis. Additionally, quasi-static simulation of relative movement between droplet and substrate was performed. Energy-displacement response of the droplet was found to exhibit surface tension-dominated elastic behavior. Experimental effort was carried out in combination with simulations. Using a novel technique, synchronized video and force response were obtained for droplets moving on patterned PDMS substrate. Features present in the force-displacement data were analyzed and linked to various aspects of the droplet-substrate system, including surface modes of the pinned droplet, residual liquids deposited behind the trailing edge, and geometric parameters of the substrate pattern.
Graduation Semester
2014-12
Permalink
http://hdl.handle.net/2142/72821
Copyright and License Information
Copyright 2014 Banglin Liu

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Graduate Dissertations and Theses at Illinois PRIMARY
Graduate Theses and Dissertations at Illinois
Dissertations and Theses - Mechanical Science and Engineering