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Jean-Marc Bomont1, Dino Costa, Jean-Louis Bretonnet

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This study reveals a density reversal in particle fluids with competing interactions. Increased attraction leads to clustering, with particles forming stabilizing shells around aggregates.

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Area of Science:

  • Physics
  • Computational Chemistry
  • Materials Science

Background:

  • Understanding particle interactions is crucial for predicting fluid behavior.
  • Competing interactions in fluids can lead to complex emergent structures.

Purpose of the Study:

  • To analyze structural correlations in dense fluids with competing interactions.
  • To investigate the impact of attraction strength on local density and clustering.

Main Methods:

  • Monte Carlo simulations were employed.
  • Analysis of structural correlations and local density was performed.
  • Cluster analysis of microscopic configurations validated findings.

Main Results:

  • A local density reversal was observed with increasing attraction strength.
  • Particles exhibited distinct behaviors based on attraction strength, forming stabilizing shells.
  • A marked rise in the structure factor peak indicated the onset of a clustered state.

Conclusions:

  • The study validates the onset of a clustered state in dense fluids with competing interactions.
  • The observed density reversal and particle shell formation are key indicators of emergent clustering.