دورية أكاديمية
Interfacial layering and capillary roughness in immiscible liquids.
| العنوان: | Interfacial layering and capillary roughness in immiscible liquids. |
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| المؤلفون: | Geysermans P; Institut des Nanosciences de Paris, CNRS-UMR7588, UPMC University Paris 6, 140, rue de Lourmel, F-75015 Paris, France. pascale.geysermans@insp.jussieu.fr, Pontikis V |
| المصدر: | The Journal of chemical physics [J Chem Phys] 2010 Aug 21; Vol. 133 (7), pp. 074706. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Institute of Physics Country of Publication: United States NLM ID: 0375360 Publication Model: Print Cited Medium: Internet ISSN: 1089-7690 (Electronic) Linking ISSN: 00219606 NLM ISO Abbreviation: J Chem Phys Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Publication: New York, NY : American Institute of Physics Original Publication: Lancaster, Pa., American Institute of Physics. |
| مستخلص: | The capillary roughness and the atomic density profiles of extended interfaces between immiscible liquids are determined as a function of the interface area by using molecular dynamics and Lennard-Jones (12-6) potentials. We found that with increasing area, the interface roughness diverges logarithmically, thus fitting the theoretical mean-field prediction. In systems small enough for the interfacial roughness not to blur the structural details, atomic density profiles across the fluid interface are layered with correlation length in the range of molecular correlations in liquids. On increasing the system size, the amplitude of the thermally excited position fluctuations of the interface increases, thus causing layering to rapidly vanish, if density profiles are computed without special care. In this work, we present and validate a simple method, operating in the direct space, for extracting from molecular dynamics trajectories the "intrinsic" structure of a fluid interface that is the local density profile of the interface cleaned from capillary wave effects. Estimated values of interfacial properties such as the tension, the intrinsic width, and the lower wavelength limit of position fluctuations are in agreement with results collected from the literature. |
| تواريخ الأحداث: | Date Created: 20100824 Date Completed: 20120926 Latest Revision: 20100823 |
| رمز التحديث: | 20240628 |
| DOI: | 10.1063/1.3471384 |
| PMID: | 20726662 |
| قاعدة البيانات: | MEDLINE |
Find this article in full text from Scitation. | تدمد: | 1089-7690 |
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| DOI: | 10.1063/1.3471384 |