Choice of Paper for Multigraphene Growth on Lead Pencil Drawing

TL;DR

This paper explores a novel method for synthesizing graphene by irradiating lead pencil drawn paper with femtosecond laser, emphasizing the importance of surface roughness in electronic property evaluation.

Contribution

It introduces a new laser-based technique for producing graphitic carbon on paper, expanding the methods for graphene synthesis.

Findings

Surface roughness affects electronic properties of the laser-treated paper.

Femtosecond laser irradiation can induce graphitic carbon formation on pencil-drawn paper.

Laser parameters influence the quality and thickness of the resulting graphene layer.

Abstract

Graphene is prepared with a variety of methods, such as thermal decomposition of SiC, Chemical Vapor Deposition and pulsed laser deposition. We propose another method to prepare graphitic carbon by irradiating lead pencil drawn paper using femtosecond laser [Jpn. J. Appl. Phys. 55 (2016) 01AE24]. In order to evaluate electronic properties, such as resistivity and mobility, surface roughness of paper is important to evaluate thickness of lead pencil as one of principal factors. The surface roughness of variety of paper was investigated including cross section of drawing paper. Femotosecond laser irradiated the sample surface with its focus shifted from the optical focal point to enlarge the laser spot and tender irradiation.