Work

Orientation-Dependent Ionic-Current Rectification in Colloidal Crystals

Year: 2025

Type: article

Abstract: Nonreciprocal transport (current rectification) in bulk materials is rarer and more complex than at interfaces. We theoretically demonstrate ion current rectification in binary superlattices of oppositely charged nanoparticles and show that this effect strongly depends on the direction of the applied electric field. We derive an equation that relates the symmetry elements of the superlattice to the directions where rectification is forbidden. This equation is used to analyze the conductivity of different superlattices obtained from the numerical solution of the Poisson-Nernst-Planck equations.

Source: Physical Review Letters

DOI: 10.1103/rlp5-v889

Authors: Santiago F. Bonoli, Leandro L. Missoni, Yamila A. Perez Sirkin, Mario Tagliazucchi

Institution: Universidad de Buenos Aires

Language: English

Topic: Nanopore and Nanochannel Transport Studies

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: Consejo Nacional de Investigaciones Científicas y Técnicas, Agencia Nacional de Promoción Científica y Tecnológica

Awards: G2683431134, G7146959946