Adsorbate Transport on Graphene by Electromigration

Abstract

Chemical functionalization of graphene holds promise for various applications ranging from nanoelectronics to catalysis, drug delivery, and nanoassembly. In many applications it is important to be able to transport adsorbates on graphene in real time. We propose to use electromigration to drive the adsorbate transport across the graphene sheet. To assess the efficiency of electromigration, we develop a tight-binding model of electromigration of an adsorbate on graphene and obtain simple analytical expressions for different contributions to the electromigration force. Using experimentally accessible parameters of realistic graphene-based devices as well as electronic structure theory calculations to parametrize the developed model, we argue that electromigration on graphene can be efficient. As an example, we show that the drift velocity of atomic oxygen covalently bound to graphene can reach ~1 cm/s.

References in corpus (4)

• The electronic properties of graphene
• Chemical functionalization of graphene with defects
• Effect of high-k environment on charge carrier mobility in graphene
• Electron-Hole Generation and Recombination Rates for Coulomb Scattering in Graphene

Cited by in corpus (7)

• Tunable Adsorbate-Adsorbate Interactions on Graphene
• Electromigration of bivalent functional groups on graphene
• Current-induced one-dimensional diffusion of Co ad-atoms on graphene nanoribbons
• Analysis of a combined influence of substrate wetting and surface electromigration on a thin film stability and dynamical morphologies
• Electromigration-guided composition patterns in thin alloy films: a computational study
• Directed long-range transport of a nearly pure component atom clusters by the electromigration of a binary surface alloy
• A mesoscopic model of nanoclusters self-assembly on a graphene Moiré