Title

Formation of Graphene Sheets Through Laser Exfoliation of Highly Ordered Pyrolytic Graphite

Editor(s)

Lam, Nghi Q.

Abstract

Freestanding two-dimensional (2D) few-layer graphene was formed through laser exfoliation of highly ordered pyrolytic graphite, using a pulsed neodymium-doped yttrium aluminum garnet (Nd:YAG) laser. Graphene sheets of several nanometers in thickness and micrometers in size were obtained. The laser exfoliation process was investigated at different laser fluences and distances between target and substrate. Three different phases, amorphouscarbon, few-layer graphene sheets, and thin graphite films, were obtained as the laser fluence increased. This study reveals an existing route of forming freestanding 2D nanostructures through laser exfoliation.

Department(s)

Mechanical and Aerospace Engineering

Keywords and Phrases

Graphene; Carbon; Graphite; Laser Ablation; Epitaxy; Amorphous State; Nanostructures; Nd:YAG Lasers; Scanning Electron Microscopy; Transmission Electron Microscopy

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2011 American Institute of Physics (AIP), All rights reserved.

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