Enhanced quantum transport in bilayer two-dimensional materials

Two-dimensional (2D) materials have been proposed, among many other applications, as an 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. • Exact quantum there-dimensional calculation transmission probabilities. • Application to bilayer graphdiyne heterostructures. • New features in probability transmission, enhancing quantum sieving • Possibilities for new application to other systems and processes.