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Metastability and nucleation in capillary condensation | | F Restagno
; L Bocquet
; T Biben
; | | Date: |
13 Mar 2000 | | Journal: | Phys Rev Lett, 84 (11), 2433-6 | | Abstract: | This paper is devoted to thermally activated dynamics of capillary condensation. On the basis of a simple model we identify the critical nucleus involved in the transition mechanism and calculate the nucleation barrier from which we obtain information on the nucleation time. Close to the condensation point, the theory predicts extremely large energy barriers leading to strong metastabilities, long time dependencies, and large hysteresis in agreement with experimental observations in mesoporous media. The validity of the model is assessed using a numerical simulation of a time-dependent Ginzburg-Landau model for the confined system. | | Source: | PubMed, pmid11018903 | | Services: | Forum | Review | Favorites | |
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