The sheet samples of thermally exfoliated graphite (TEG)–carbon nanotubes (CNT) composites (TEG-CNT-cs) were obtained by persulphate oxidation using chemical (CO) and electrochemical (anode) (ECAO). Electron microscopy reveals multi-layered structures few-layer graphene nanosheets with folded tubular-like fragments. effective thermal diffusivity values estimated nonstationary photo-pyroelectric...

0261-3069/$ see front matter 2009 Elsevier Ltd. A doi:10.1016/j.matdes.2009.06.032 * Corresponding author. Tel.: +886 3 5731608; fax: E-mail address: [email protected] (J.-L. Tsai) The mechanical properties of graphite in the forms of single graphene layer and graphite flakes (containing several graphene layers) were investigated using molecular dynamics (MD) simulation. The in-plane prop...

Submitted for the MAR16 Meeting of The American Physical Society Fe-catalyzed etching of graphene layers GUANGJUN CHENG, IRENE CALIZO, ANGELA HIGHT WALKER, NIST, PML, NIST TEAM — We investigate the Fe-catalyzed etching of graphene layers in forming gas. Fe thin films are deposited by sputtering onto mechanically exfoliated graphene, few-layer graphene (FLG), and graphite flakes on a Si/SiO2 sub...

In this study, a novel method of graphite chemical exfoliation to create graphene oxide (GO) is reported. Here, new oxidants were examined: a mixture of perchloric and nitric acids and potassium chromate. Furthermore, an effect of oxidation time, temperature of oxidation, and ultrasonication on graphite exfoliation degree was investigated. The obtained GOs were next reduced with glucose, used a...

The results of micro-Raman scattering measurements performed on three different “graphitic” materials: micro-structured disks of highly oriented pyrolytic graphite, graphene multi-layers thermally decomposed from carbon terminated surface of 4H-SiC and an exfoliated graphene monolayer are presented. Despite its multi-layer character, most parts of the surface of the graphitized SiC substrates s...