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Experimental Evidence for Two-Step Nucleation in Colloidal Crystallization
Abstract
We investigated the freezing of colloidal spheres in two dimensions with single-particle resolution. Using micron-size, charge-stabilized polystyrene spheres with a temperature-dependent depletion attraction induced by surfactant micelles, we supercooled an initially amorphous (gaslike) system. Particle motions were monitored as crystallization proceeded. At low concentrations, freezing occurred in a single step in a manner consistent with classical nucleation theory. In other samples two-step nucleation was found, in which amorphous clusters grew to approximately 30 particles, then rapidly crystallized. Measured free energies show the role of metastable gas-liquid coexistence, which also enhanced the rate of nucleation following deeper quenches.
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Citations
Cited by
A Review of Classical and Nonclassical Nucleation Theories
Karthika, S., Radhakrishnan, T. K., & Kalaichelvi, P. (2016) · Crystal Growth & Design · doi:10.1021/acs.cgd.6b00794 · Cited by 868
The role of local structure in dynamical arrest
Royall, C. P., & Williams, S. R. (2015) · Physics Reports · doi:10.1016/j.physrep.2014.11.004 · Cited by 473
Gas Bubbles in Electrochemical Gas Evolution Reactions
Zhao, X., Ren, H., & Luo, L. (2019) · Langmuir · doi:10.1021/acs.langmuir.9b00119 · Cited by 457
Tanaka, H. (2012) · The European Physical Journal E · doi:10.1140/epje/i2012-12113-y · Cited by 347
Assembly and phase transitions of colloidal crystals
Li, B., Zhou, D., & Han, Y. (2016) · Nature Reviews Materials · doi:10.1038/natrevmats.2015.11 · Cited by 266
Metadata
- Authors
- Savage, J. R., & Dinsmore, A. D.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2009-05-15
- Volume
- 102
- Issue
- 19
- Pages
- 198302-198302
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2033096733
- Cited by
- 257
- References
- 0
- FWCI
- 7.62
- Type
- journal article
- Language
- en
- Open access
- closed
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