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This research aims to quantify how compressibility behaves in inhomogeneous fluids, particularly at fluid interfaces.

Anisotropic compressibility in inhomogeneous fluids

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This research aims to quantify how compressibility behaves in inhomogeneous fluids, particularly at fluid interfaces.
Introduced a linear-response approach to measure directional mechanical responses.
Applied fluctuation formulas to quantify compressibility in the water/carbon tetrachloride interface using molecular dynamics simulations.
Evaluated interfacial softness and compressive modes from equilibrium conditions.
Demonstrated a strong local anisotropic response at the water/carbon tetrachloride interface.
Found a positive scalar surface excess response, indicating softer interfacial regions.
Showed that confinement by organic liquids alters the apparent compressive response of water, especially in thin films.

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Randomized trial examines compressibility in inhomogeneous fluids, suggesting insights into material responses at interfaces.

Marcello Sega (2026) studied this question.

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