Correlation between asymmetric profiles in slits and standard prewetting lines
The adsorption of Ar on substrates of Li is investigated within the framework of a density functional theory which includes an effective pair potential recently proposed. This approach yields good results for the surface tension of the liquid-vapor interface. The behavior of the adsorbate in the cas...
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| Format: | Article |
| Language: | English |
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Papers in Physics
2009-09-01
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| Series: | Papers in Physics |
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| Online Access: | http://www.papersinphysics.org/index.php/papersinphysics/article/view/7/PDF7 |
| _version_ | 1828216276435075072 |
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| author | Leszek Szybisz Salvador A. Sartarelli |
| author_facet | Leszek Szybisz Salvador A. Sartarelli |
| author_sort | Leszek Szybisz |
| collection | DOAJ |
| description | The adsorption of Ar on substrates of Li is investigated within the framework of a density functional theory which includes an effective pair potential recently proposed. This approach yields good results for the surface tension of the liquid-vapor interface. The behavior of the adsorbate in the cases of a single planar wall and a slit geometry is analyzed as a function of temperature. Asymmetric density profiles are found for fluid confined in a slit built up of two identical planar walls leading to the spontaneous symmetry breaking (SSB) effect. We found that the asymmetric solutions occur even above the wetting temperature $T_w$ in a range of average densities $ho^*_{ssb1} le ho^*_{av} le ho^*_{ssb2}$, which diminishes with increasing temperatures until its disappearance at the critical prewetting point $T_{m cpw}$. In this way a correlation between the disappearance of the SSB effect and the end of prewetting lines observed in the adsorption on a one-wall planar substrate is established. In addition, it is shown that a value for $T_{m cpw}$ can be precisely determined by analyzing the asymmetry coefficients. |
| first_indexed | 2024-04-12T15:29:38Z |
| format | Article |
| id | doaj.art-d91d1e91919444a39d97fba03b05236f |
| institution | Directory Open Access Journal |
| issn | 1852-4249 |
| language | English |
| last_indexed | 2024-04-12T15:29:38Z |
| publishDate | 2009-09-01 |
| publisher | Papers in Physics |
| record_format | Article |
| series | Papers in Physics |
| spelling | doaj.art-d91d1e91919444a39d97fba03b05236f2022-12-22T03:27:09ZengPapers in PhysicsPapers in Physics1852-42492009-09-011001000110.4279/pip.010001Correlation between asymmetric profiles in slits and standard prewetting linesLeszek SzybiszSalvador A. SartarelliThe adsorption of Ar on substrates of Li is investigated within the framework of a density functional theory which includes an effective pair potential recently proposed. This approach yields good results for the surface tension of the liquid-vapor interface. The behavior of the adsorbate in the cases of a single planar wall and a slit geometry is analyzed as a function of temperature. Asymmetric density profiles are found for fluid confined in a slit built up of two identical planar walls leading to the spontaneous symmetry breaking (SSB) effect. We found that the asymmetric solutions occur even above the wetting temperature $T_w$ in a range of average densities $ho^*_{ssb1} le ho^*_{av} le ho^*_{ssb2}$, which diminishes with increasing temperatures until its disappearance at the critical prewetting point $T_{m cpw}$. In this way a correlation between the disappearance of the SSB effect and the end of prewetting lines observed in the adsorption on a one-wall planar substrate is established. In addition, it is shown that a value for $T_{m cpw}$ can be precisely determined by analyzing the asymmetry coefficients.http://www.papersinphysics.org/index.php/papersinphysics/article/view/7/PDF7Density functional calculationsSurface tensionWetting |
| spellingShingle | Leszek Szybisz Salvador A. Sartarelli Correlation between asymmetric profiles in slits and standard prewetting lines Papers in Physics Density functional calculations Surface tension Wetting |
| title | Correlation between asymmetric profiles in slits and standard prewetting lines |
| title_full | Correlation between asymmetric profiles in slits and standard prewetting lines |
| title_fullStr | Correlation between asymmetric profiles in slits and standard prewetting lines |
| title_full_unstemmed | Correlation between asymmetric profiles in slits and standard prewetting lines |
| title_short | Correlation between asymmetric profiles in slits and standard prewetting lines |
| title_sort | correlation between asymmetric profiles in slits and standard prewetting lines |
| topic | Density functional calculations Surface tension Wetting |
| url | http://www.papersinphysics.org/index.php/papersinphysics/article/view/7/PDF7 |
| work_keys_str_mv | AT leszekszybisz correlationbetweenasymmetricprofilesinslitsandstandardprewettinglines AT salvadorasartarelli correlationbetweenasymmetricprofilesinslitsandstandardprewettinglines |