Waterlike Features, Liquid-Crystal Phase and Self-Assembly in Janus Dumbbells

Abstract

We use Molecular Dynamics simulations to explore the properties of dimmeric Janus nanoparticles. The nanoparticles are modeled as dumbbells. One kind of monomer interacts by a Lennard-Jones potential, while the other specie of monomer interacts though a two length scale potential. This specific two length scale potential do not present waterlike anomalies in bulk. However, our results shows that, when combined in a dimmer, the Janus nanoparticle will have waterlike anomalies. The self-assembly properties were also explored. We observe several kinds of micelles, and a liquid-crystal phase. This results indicates that is possible to create Janus nanoparticles with waterlike features using monomers without anomalous behavior. The anomalies and structures are explained with the two length scale potential characteristics.

References in corpus (4)

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Cited by in corpus (8)

• Waterlike anomalies in a 2D core-softened potential
• Anomalous diffusion and diffusion anomaly in confined Janus dumbbells
• Waterlike anomalies in hard core-soft shell nanoparticles using a effective potential approach: pinned vs adsorbed polymers
• Confinement effects on the properties of Janus dimers
• Competing interactions near the liquid-liquid phase transition of core-softened water/methanol mixtures
• Solid-amorphous transition is related to the waterlike anomalies in a fluid without liquid-liquid phase transition
• Integral equation study of soft-repulsive dimeric fluids
• Phase classification using neural networks: application to supercooled, polymorphic core-softened mixtures