Nanoscale Topographical Replication of Graphene Architecture by Artificial DNA nanostructures

TL;DR

This study demonstrates a novel method for nanoscale topographical replication of graphene using DNA nanostructures, enabling precise control over its surface features and revealing enhanced thermal stability and unique electrical properties.

Contribution

The paper introduces a new technique for fabricating graphene nanostructures by replicating DNA nanostructures, overcoming previous geometric limitations.

Findings

Graphene topography can be precisely controlled using DNA nanostructures.

Replicated graphene exhibits enhanced thermal stability.

Sheet resistivity shows a negative temperature coefficient upon DNA denaturation.

Abstract

Despite many studies on how geometry can be used to control the electronic properties of graphene, certain limitations to fabrication of designed graphene nanostructures exist. Here, we demonstrate controlled topographical replication of graphene by artificial deoxyribonucleic acid (DNA) nanostructures. Owing to the high degree of geometrical freedom of DNA nanostructures, we controlled the nanoscale topography of graphene. The topography of graphene replicated from DNA nanostructures showed enhanced thermal stability and revealed an interesting negative temperature coefficient of sheet resistivity when underlying DNA nanostructures were denatured at high temperatures.