Nucleation and Growth of a Nanobubble on Rough Surfaces
Posted on 2020-04-10 - 11:34
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 t1/3 behavior followed by a diffusive growth regime which is marked by t1/2 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.
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Maheshwari, Shantanu; van Kruijsdijk, Cor; Sanyal, Suchismita; Harvey, Albert D. (2020). Nucleation and Growth of a Nanobubble on Rough Surfaces. ACS Publications. Collection. https://doi.org/10.1021/acs.langmuir.0c00635
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AUTHORS (4)
SM
Shantanu Maheshwari
Cv
Cor van Kruijsdijk
SS
Suchismita Sanyal
AH
Albert D. Harvey