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Kyoko K Tanaka1, Hidekazu Tanaka, Raymond Angélil2
1Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819, Japan.
Physical Review. E
|September 15, 2016
Summary
This study explores advanced models for surface tension in curved interfaces, finding that higher-order Helfrich corrections offer better agreement with simulations than the Tolman model, especially for small bubbles.
Area of Science:
- Thermodynamics
- Physical Chemistry
- Computational Physics
Background:
- The Tolman theory provides a classical description of surface tension for curved interfaces.
- Accurate modeling of curved interface thermodynamics is crucial in various scientific fields.
Purpose of the Study:
- To evaluate the applicability of higher-order Helfrich corrections for modeling surface tension of curved interfaces.
- To compare the Helfrich correction with the classical Tolman description using simulation data.
Main Methods:
- Molecular dynamics simulations were performed to generate data for curved interfaces.
- A recent parametrization of the Helfrich correction was employed.
- The Helfrich correction was tested against simulation measurements.
Main Results:
- The Helfrich correction demonstrated stronger agreement with simulation data compared to the Tolman correction.
- Analyses indicated that corrections of order higher than the second are necessary for small bubbles (radius ≲1 nm).
Conclusions:
- Higher-order Helfrich corrections provide a more accurate description of surface tension for curved interfaces than the Tolman model.
- The findings suggest limitations of the classical Tolman theory for nanoscale curved interfaces.
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