Long-wavelength density fluctuations as nucleation precursors
| Autor: | Julien Lam, James F. Lutsko |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Chemical Physics (physics.chem-ph)
Physics Statistical Mechanics (cond-mat.stat-mech) Weak solution Nucleation FOS: Physical sciences Flux Thermophysique Généralités Condensed Matter - Soft Condensed Matter 01 natural sciences 010305 fluids & plasmas Long wavelength Physico-chimie générale Thermodynamique et thermochimie [physique] Chemical physics Physics - Chemical Physics Phase (matter) 0103 physical sciences Soft Condensed Matter (cond-mat.soft) Kinetic Monte Carlo Classical nucleation theory 010306 general physics Spatial extent Condensed Matter - Statistical Mechanics |
| Zdroj: | Physical Review E, 101 (5 |
| ISSN: | 2470-0053 |
| Popis: | Recent theories of nucleation that go beyond classical nucleation theory predict that diffusion-limited nucleation of both liquid droplets and of crystals from a low-density vapor (or weak solution) begins with long-wavelength density fluctuations. This means that in the early stages of nucleation, "clusters" can have low density but large spatial extent, which is at odds with the classical picture of arbitrarily small clusters of the condensed phase. We present the results of kinetic Monte Carlo simulations using forward flux sampling to show that these predictions are confirmed, namely, that on average, nucleation begins in the presence of low-amplitude, but spatially extended density fluctuations thus confirming a significant prediction of the nonclassical theory. SCOPUS: ar.j info:eu-repo/semantics/published |
| Databáze: | OpenAIRE |
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