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Coarsening dynamics of nanodroplets on topographically structured substrates

Asgari, M ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1088/0953-8984/25/4/045012
  3. Publisher: 2013
  4. Abstract:
  5. Employing a biharmonic boundary integral method with linear elements, coarsening dynamics of nanodroplets on topographical step heterogeneity is investigated. It is shown that the step height and droplet configuration have an influential effect on the dynamics. Increasing the step height slows down the process while locating the droplets close to the step boosts the coarsening rate. Considering a slip boundary condition enhances the dynamics and reveals a transition in the droplet migration direction. Our results reveal that increasing the surface wettability weakens the dynamics. Various types of the disjoining pressure over the step are also considered and their effects on the coarsening are investigated
  6. Keywords:
  7. Bi-harmonic ; Boundary integral methods ; Coarsening dynamics ; Coarsening rates ; Disjoining pressures ; Linear element ; Nano-droplets ; Slip boundary conditions ; Step height ; Structured substrate ; Surface wettability ; Coarsening ; Drops ; Dynamics ; Nanoparticle ; Algorithm ; Chemical model ; Chemistry ; Methodology ; Statistical model ; Surface property ; Theoretical model ; Time ; Algorithms ; Biophysics ; Models, Chemical ; Models, Statistical ; Models, Theoretical ; Nanoparticles ; Nanotechnology ; Pressure ; Surface Properties ; Time Factors ; Wettability
  8. Source: Journal of Physics Condensed Matter ; Volume 25, Issue 4 , 2013 ; 09538984 (ISSN)
  9. URL: http://iopscience.iop.org/article/10.1088/0953-8984/25/4/045012/meta