2018
DOI: 10.1039/c8sm00389k
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Coupling between criticality and gelation in “sticky” spheres: a structural analysis

Abstract: We combine experiments and simulations to study the link between criticality and gelation in sticky spheres. We employ confocal microscopy to image colloid-polymer mixtures and Monte Carlo simulations of the square-well (SW) potential as a reference model. To this end, we map our experimental samples onto the SW model. We find an excellent structural agreement between experiments and simulations, both for locally favored structures at the single particle level and large-scale fluctuations at criticality. We fo… Show more

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Cited by 29 publications
(18 citation statements)
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References 66 publications
(121 reference statements)
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“…This is intriguing as one may enquire as to the nature of the higher-order structure approaching the MIPS phase boundary [40,41]. Very recently, comparisons have been made between MIPS and criticality in passive systems [41], and in the case of passive systems, approaching criticality, the population of higherorder structure detected by the TCC increases [60], in marked contrast to our findings here. In the future, it would be interesting to investigate whether the trend we have observed changes closer to the MIPS boundary or whether the response of the higher-order structure is profoundly different to passive systems.…”
Section: Discussioncontrasting
confidence: 80%
See 1 more Smart Citation
“…This is intriguing as one may enquire as to the nature of the higher-order structure approaching the MIPS phase boundary [40,41]. Very recently, comparisons have been made between MIPS and criticality in passive systems [41], and in the case of passive systems, approaching criticality, the population of higherorder structure detected by the TCC increases [60], in marked contrast to our findings here. In the future, it would be interesting to investigate whether the trend we have observed changes closer to the MIPS boundary or whether the response of the higher-order structure is profoundly different to passive systems.…”
Section: Discussioncontrasting
confidence: 80%
“…1, we show the state points we consider and the results of our simulations. While other work has addressed the phase diagram of active Brownian particles in two and three dimensions with respect to MIPS [60,61], or reported the full phase diagram of active disks, in which the freezing line is affected by activity [38]; here, we distinguish the crystallisation regimes of nucleation and growth and spinodal by inspection of the crystallinity as a function of time data (see Sect. 3.3).…”
Section: State Diagrammentioning
confidence: 99%
“…Therefore we conclude that the Asakura-Oosawa model is also well-represented in colloidal systems for particle-resolved studies. It has also been noted that generic short-ranged attractions give similar behaviour [75], which has also be seen in the correspondence of the square-well attraction and colloid-polymer mixtures [76,77].…”
Section: Attractions and Repulsions In Particle-resolved Studiesmentioning
confidence: 53%
“…1, we show the state points we consider and the results of our simulations. While other work has addressed the phase diagram of active Brownian particles in two and three dimensions with respect to MIPS [60,61], or reported the full phase diagram of active disks, in which the freezing line is affected by activity [38]; here we distinguish the crystallisation regimes of nucleation and growth and spinodal by inspection of the crystallinity as a function of time data (see section III C). In particular, we identify behaviour compatible with the passive WCA system for Pe = 0.…”
Section: A State Diagrammentioning
confidence: 99%