Creating nanoporous graphene with swift heavy ions

Autor(en)

H. Vázquez, E. H. Åhlgren, O. Ochedowski, A. A. Leino, R. Mirzayev, R. Kozubek, H. Lebius, M. Karlušic, M. Jakšic, A. V. Krasheninnikov, J. Kotakoski, M. Schleberger, K. Nordlund, F. Djurabekova

Abstrakt

We examine swift heavy ion-induced defect production in suspended single layer graphene using Raman spectroscopy and a two temperature molecular dynamics model that couples the ionic and electronic subsystems. We show that an increase in the electronic stopping power of the ion results in an increase in the size of the pore-type defects, with a defect formation threshold at 1.22-1.48 keV/layer. We also report calculations of the specific electronic heat capacity of graphene with different chemical potentials and discuss the electronic thermal conductivity of graphene at high electronic temperatures, suggesting a value in the range of 1 Wm(-1) K-1. These results indicate that swift heavy ions can create nanopores in graphene, and that their size can be tuned between 1 and 4 nm diameter by choosing a suitable stopping power.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

University of Helsinki, University of Nottingham, Universität Duisburg-Essen, CIMAP - Centre de recherche sur les Ions, les MAtériaux et la Photonique, Rudjer Boskovic Institute, Aalto University, Helmholtz-Zentrum Dresden-Rossendorf, National University of Science and Technology (MISiS)

Journal

Carbon

Band

114

Seiten

511-518

Anzahl der Seiten

8

ISSN

0008-6223

DOI

https://doi.org/10.1016/j.carbon.2016.12.015

Publikationsdatum

04-2017

Peer-reviewed

Ja

ÖFOS 2012

104017 Physikalische Chemie, 103018 Materialphysik

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Chemie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/42e69af4-6efe-4d07-a922-8fc2e499ccc7