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Long-Range Fluctuation-Induced Forces in Driven Electrolytes.

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This summary is machine-generated.

We found that electrolytes in an electric field show scale invariance, leading to tunable Casimir-like forces between boundaries. These nonequilibrium correlations can control interactions of uncharged structures.

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Area of Science:

  • Physics
  • Physical Chemistry
  • Soft Matter

Background:

  • Electrolytes exhibit complex dynamics under external fields.
  • Debye screening typically limits interaction ranges in electrolytes.
  • Understanding nonequilibrium correlations is crucial for soft matter systems.

Purpose of the Study:

  • To investigate the stochastic dynamics of electrolytes under a uniform external electric field.
  • To explore the emergence of scale invariance and long-range correlations.
  • To analyze the resulting fluctuation-induced forces between confining boundaries.

Main Methods:

  • Theoretical analysis of electrolyte dynamics.
  • Investigation of scale invariance and correlation functions.
  • Derivation of Casimir-like forces in a nonequilibrium system.

Main Results:

  • Electrolytes driven by an electric field display generic scale invariance.
  • Long-range correlations arise, leading to a Casimir-like force.
  • This force is tunable by the electric field and can be attractive or repulsive.

Conclusions:

  • Nonequilibrium correlations in electrolytes are significant and can be controlled.
  • The electric field-tunable Casimir-like force offers new ways to manipulate interactions.
  • This work has implications for understanding interactions in biological and synthetic systems.