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Collective Behavior of Evaporating Droplets on Superhydrophobic Surfaces
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  • shiva moradi,
  • Luca Businaro,
  • Mehdi Habibi,
  • Ali-Reza Moradi
shiva moradi
Institute for Advanced Studies in Basic Sciences
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Luca Businaro
Institute of Photonics and Nanotechnologies National Research Council
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Mehdi Habibi
Wageningen Universiteit en Researchcentrum
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Ali-Reza Moradi
Institute for Advanced Studies in Basic Sciences
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Abstract

We study the evaporation dynamics of multiple water droplets deposited in ordered arrays or randomly distributed (sprayed) on superhydrophobic substrates (SHP) and smooth silicone wafers (SW). The evaluation of mass of the droplets as a function of time shows a power-law behavior with exponent 3/2, and from the prefactor of the power-law an evaporation rate can be determined. We find that the evaporation rate on a SHP surface is slower than a normal surface for both single droplet and collection of droplets. By dividing a large droplet into more smaller ones, the evaporation rate increases and the difference between the evaporation rates on SHP and SW surfaces becomes higher. The evaporation rates depend also on the distance between the droplets and increase with increasing this distance.

Peer review status:ACCEPTED

12 Feb 2020Submitted to AIChE Journal
13 Feb 2020Submission Checks Completed
13 Feb 2020Assigned to Editor
16 Feb 2020Reviewer(s) Assigned
27 Mar 2020Editorial Decision: Revise Minor
26 Apr 20201st Revision Received
02 May 2020Submission Checks Completed
02 May 2020Assigned to Editor
06 May 2020Reviewer(s) Assigned
18 May 2020Editorial Decision: Accept