Electrical conductivity of collapsed multilayer graphene tubes

TL;DR

This paper reports on the synthesis of multilayer graphene tubes, their collapse into stripes, and the investigation of their electrical properties, revealing semiconductor-like behavior and potential tunneling effects in devices.

Contribution

It introduces a new method for creating multilayer graphene structures and explores their electrical behavior, including tunneling phenomena, which is novel in this context.

Findings

Graphene tubes collapse into conductive stripes after copper etching.

Electrical conductance shows semiconductor-like temperature dependence.

Evidence suggests tunneling processes in the fabricated device.

Abstract

Synthesis of multilayer graphene on copper wires by a chemical vapor deposition method is reported. After copper etching, the multilayer tube collapses forming stripes of graphitic films, their electrical conductance as a function of temperature indicate a semiconductor-like behavior. Using the multilayer graphene stripes, a cross junction is built and owing to its electrical behavior we propose that a tunneling process exists in the device.