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A relation for nanodroplet diffusion on smooth surfaces

Authors Li, Chu HKUST affiliated (currently or previously)
Huang, Jizu
Li, Zhigang View this author's profile
Issue Date 2016
Source Scientific Reports , v. 6, May 2016, article number 26488
Summary In this work, we study the diffusion of nanodroplets on smooth surfaces through molecular dynamics (MD) simulations and theoretical analyses. Molecular dynamics simulations show that nanodroplet surface diffusion is different from that of single molecules and solid particles. The dependence of nanodroplet diffusion coefficient on temperature undergoes a transition from linear to nonlinear as the surface wettability is weakened due to the coupling of temperature and surface energy. We also develop a simple relation for the diffusion coefficient by using the contact angle and contact radius of the droplet. It works well for a wide range of surface wettabilities and different sized nanodroplets, as confirmed by MD simulations.
ISSN 2045-2322
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Language English
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