Journal
LANGMUIR
Volume 28, Issue 48, Pages 16555-16566Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la302718q
Keywords
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Funding
- MICINN [FIS2009-14008-C02]
- ESA [FASES, PASTA]
- Moncloa Campus of International Excellence (UCM-UPM)
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In this work, we study how structures develop on 2D dense binary colloidal monolayers as a function of the relative concentration of small/large particles. Translational and orientational distribution functions have been used to monitor the continuous phase transition through a detailed characterization of the global and local order. We have observed how a gradual enhancement in the number of particles of different sizes leads to a continuous vitrification process and how homogeneous binary glasses form in equimolar mixtures. Also, we have performed a simple calculation that relates the structures found to the pair dipolar potential, allowing the forecast of local structures in other arbitrary binary mixtures. Finally, we have corroborated the goodness of the binary systems as a glass-forming model by comparing the established scenario with the structural features found in partially aggregated monolayers.
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