تقرير
Direct observation of homogeneous cavitation in nanopores
| العنوان: | Direct observation of homogeneous cavitation in nanopores |
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| المؤلفون: | Doebele, V., Benoit-Gonin, A., Souris, F., Cagnon, L., Spathis, P., Wolf, P. E., Grosman, A., Bossert, M., Trimaille, I., Noûs, C., Rolley, E. |
| المصدر: | Phys. Rev. Lett. 125, 255701 (2020) |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Soft Condensed Matter, Condensed Matter - Statistical Mechanics |
| الوصف: | We report on the evaporation of hexane from porous alumina and silicon membranes. These membranes contain billions of independent nanopores tailored to an ink-bottle shape, where a cavity several tens of nanometers in diameter is separated from the bulk vapor by a constriction. For alumina membranes with narrow enough constrictions, we demonstrate that cavity evaporation proceeds by cavitation. Measurements of the pressure dependence of the cavitation rate follow the predictions of the bulk, homogeneous, classical nucleation theory, definitively establishing the relevance of homogeneous cavitation as an evaporation mechanism in mesoporous materials. Our results imply that porous alumina membranes are a promising new system to study liquids in a deeply metastable state. Comment: 14 pages , 4 figures. Source files also contain Supplemental Material (Doebele_HomogeneousCavitationMembranes_SM.pdf) |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.125.255701 |
| URL الوصول: | http://arxiv.org/abs/2007.03521 |
| رقم الأكسشن: | edsarx.2007.03521 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.125.255701 |
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