10.1021/acs.langmuir.0c00635.s002
Shantanu Maheshwari
Shantanu
Maheshwari
Cor van Kruijsdijk
Cor
van Kruijsdijk
Suchismita Sanyal
Suchismita
Sanyal
Albert D. Harvey
Albert D.
Harvey
Nucleation and Growth of a Nanobubble on Rough Surfaces
American Chemical Society
2020
surface morphology
surface roughness
growth behavior
reaction rates
nucleation
diffusive growth regime
simulation
nanobubble
2020-04-10 11:34:00
Media
https://acs.figshare.com/articles/media/Nucleation_and_Growth_of_a_Nanobubble_on_Rough_Surfaces/12110871
We study the nucleation and growth
of a nanobubble on rough surfaces
using molecular dynamics simulations. A nanobubble nucleates and
grows by virtue of a heterogeneous surface reaction which results
in the production of gas molecules near the surface. We study the
role of surface roughness in the nucleation and growth behavior of
a nanobubble. We perform simulations at various reaction rates and
surface morphology and quantified the growth dynamics of a nanobubble.
Our simulations show that after the onset of nucleation, the nanobubble
grows rapidly with radius following <i>t</i><sup>1/3</sup> behavior followed by a diffusive growth regime which is marked by <i>t</i><sup>1/2</sup> growth behavior. This growth behavior remains
independent of surface roughness and reaction rates over the range
considered in this study. We also quantified the oversaturation of
gas required for nucleation of a nanobubble and demonstrated its
dependence on the surface morphology.