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Probing Disordered Substrates by Imaging the Adsorbate in its Fluid Phase

Ankush Sengupta·Surajit Sengupta·Gautam I. Menon
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Abstract

Several recent imaging experiments access the equilibrium density profiles of interacting particles confined to a two-dimensional substrate. When these particles are in a fluid phase, we show that such data yields precise information regarding substrate disorder as reflected in one-point functions and two-point correlations of the fluid. Using Monte Carlo simulations and replica generalizations of liquid state theories, we extract unusual two-point correlations of time-averaged density inhomogeneities induced by disorder. Distribution functions such as these have not hitherto been measured but should be experimentally accessible.

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Ankush Sengupta, Surajit Sengupta, Gautam I. Menon. 2004-10-15. Probing Disordered Substrates by Imaging the Adsorbate in its Fluid Phase. https://doi.org/10.1209/epl%2Fi2005-10025-3

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