| Autor: |
Addula RKR; Department of Chemical Engineering, Indian Institute of Science, Bengaluru 560012, India., Punnathanam SN; Department of Chemical Engineering, Indian Institute of Science, Bengaluru 560012, India. |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2021 Apr 09; Vol. 126 (14), pp. 146001. |
| DOI: |
10.1103/PhysRevLett.126.146001 |
| Abstrakt: |
In this Letter, we present a molecular theory of nucleation from dilute phases such as vapors or dilute solutions. The theory can model the nonclassical two-step crystal nucleation seen in many systems. When applied to study and analyze the crystal nucleation pathways from Lennard-Jones vapor, we find that prior explanations of the two-step mechanism based on lower barrier height for liquid nuclei is incomplete. The analysis from the molecular theory reveal that a complete explanation would also require consideration of anisotropy in the diffusion constants for growth of liquid droplets vis-á-vis the crystal nuclei. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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