Synchronized Fractionation and Phase Separation in Binary Colloids
| Autor: | Ying Liang, Lian Dan Yao, Hong Yu Chen, Tian Hui Zhang, Yan Shi |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0303 health sciences
Supersaturation Materials science Binary number FOS: Physical sciences General Chemistry Fractionation Condensed Matter - Soft Condensed Matter Condensed Matter Physics 01 natural sciences law.invention Crystal Condensed Matter::Soft Condensed Matter 03 medical and health sciences Colloid law Chemical physics Scientific method 0103 physical sciences Soft Condensed Matter (cond-mat.soft) Crystallization 010306 general physics Quasistatic process 030304 developmental biology |
| DOI: | 10.48550/arxiv.2007.11263 |
| Popis: | Fractionation is necessary for self-assembly in multicomponent mixtures. Here, reversible fractionation and crystallization are realized and studied in a two-dimensional binary colloids which is supersaturated by enhancing the attraction between colloidal particles. As a deep and fast supersaturation results in gels with a uniform distribution of binary particles, a gradual quasistatic supersaturating process leads to a two-step crystallization in which small particles and large particles are fractionated as coexisting crystal and liquid phases respectively. Fractionation occurs as well in the quasistatic melting of gel. We show that the synchronized fractionation and phase separation arises from the competition between the size-dependent repulsion and the tunable attraction. The results in this study demonstrate a robust mechanism of fractionation via phase separation, and have important implication in understanding the reversible formation of membraneless organelles in living cells. Comment: 14 pages |
| Databáze: | OpenAIRE |
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