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Interaction of 3D dewetting nanodroplets on homogeneous and chemically heterogeneous substrates

Asgari, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1088/0953-8984/26/22/225001
  3. Abstract:
  4. Long-time interaction of dewetting nanodroplets is investigated using a long-wave approximation method. Although three-dimensional (3D) droplets evolution dynamics exhibits qualitative behavior analogous to two-dimensional (2D) dynamics, there is an extensive quantitative difference between them. 3D dynamics is substantially faster than 2D dynamics. This can be related to the larger curvature and, as a consequence, the larger Laplace pressure difference between the droplets in 3D systems. The influence of various chemical heterogeneities on the behavior of droplets has also been studied. In the case of gradient surfaces, it is shown how the gradient direction could change the dynamics. For a chemical step located between the droplets, the dynamics is enhanced or weakened depending on the initial configuration of the system
  5. Keywords:
  6. Coarsening ; Dewetting ; Heterogeneity ; Drops ; Three dimensional ; Chemical heterogeneities ; De-wetting ; Gradient direction ; Heterogeneous substrates ; Initial configuration ; Long-wave approximation ; Qualitative behavior ; Dynamics ; Artificial membrane ; Nanomaterial ; Chemical model ; Chemical phenomena ; Chemistry ; Computer simulation ; Diffusion ; Hydrodynamics ; Microfluidics ; Particle size ; Procedures ; Ultrastructure ; Wettability ; Hydrophobic and Hydrophilic Interactions ; Membranes, Artificial ; Models, Chemical ; Nanostructures
  7. Source: Journal of Physics Condensed Matter ; Vol. 26, Issue. 22 , 2014 ; ISSN: 09538984
  8. URL: http://iopscience.iop.org/0953-8984/26/22/225001