Work

Diversity-induced resonance at surfactant-laden interfaces

Year: 2026

Type: article

Abstract: Networks of coupled nonlinear elements can amplify weak periodic signals when unit heterogeneity is intermediate-a phenomenon known as diversity-induced resonance (DIR). We test this mechanism at surfactant-laden interfaces by modeling the interface as a two-dimensional lattice of laterally coupled patches obeying Frumkin adsorption-desorption kinetics, driven by sinusoidal modulation of the monomer concentration; diversity enters as patchwise variability in the adsorption drive. Using linear analysis and numerical simulations, we compute the first-harmonic gain of the mean surface coverage while sweeping diversity and other parameters, and connect the model to experimental observables. Intermediate diversity maximizes the collective response, increasing mean coverage by ∼3-4× versus a homogeneous interface and improving robustness to frequency variations, consistent with DIR. Because the effect emerges from network coupling, the model requires no empirical time constants or ad hoc relaxation pathways.

Source: Physical review. E

DOI: 10.1103/1chj-g95g

Author: Stefano Scialla

Institutions: Università Campus Bio-Medico, National Institute of Chemical Physics and Biophysics

Language: English

Topic: Nonlinear Dynamics and Pattern Formation

Subfield: Computer Networks and Communications

Field: Computer Science

Domain: Physical Sciences

Open Access status: hybrid

Funder: Eesti Teadusagentuur

Award: Learning Processes in Language Dynamics