Enhanced quantum transport in bilayer two-dimensional materials

TL;DR

This study demonstrates that bilayer graphdiyne membranes significantly enhance quantum transport compared to monolayers, with resonance effects influenced by interlayer separation, offering potential improvements for molecular separation technologies.

Contribution

The paper introduces three-dimensional quantum wave packet calculations showing enhanced transport and resonance phenomena in bilayer 2D materials over monolayers.

Findings

Enhanced quantum transport in bilayer membranes

Resonance features depend on interlayer separation

Potential for improved molecular separation applications

Abstract

Two-dimensional (2D) materials have been proposed, among many other applications, as a efficient tool for the separation of atomic and molecular species and their corresponding isotopes, given the confinement provided by their subnanometric dimensions. In this work we present three dimensional quantum wave packet calculations revealing an enhancement in the quantum transport in bilayer over monolayer graphdiyne membranes, one of the most popular 2D materials which is commonly employed for this purpose. Besides, resonances emerge superimposed over the typical monolayer profile for transmission probabilities, a feature that is general to other bilayer nanoporous 2D heterostructures and that shows a strong dependence on the interlayer separation.