Investigation of edge states in artificial graphene nano-flakes

Electron states near graphene edge

The band structure of graphene near the Fermi surface is often well described by the effective mass approximation. In this approach electron wave function obeys the Diractype equation. To describe a number of effects it is necessary to supplement the equation with boundary conditions. Using the Hermiticity and the time reversal symmetry we derive the phenomenological boundary conditions for a m...

Stability of edge states and edge magnetism in graphene nanoribbons

Jens Kunstmann,1,* Cem Özdoğan,2 Alexander Quandt,3,4 and Holger Fehske3 1Institute for Materials Science, TU Dresden, Hallwachstr. 3, D-01069 Dresden, Germany 2Department of Materials Science and Engineering, Çankaya University, Balgat, TR-06530 Ankara, Turkey 3Institut für Physik der Universität Greifswald, Felix–Hausdorff-Str. 6, D-17489 Greifswald, Germany 4School of Physics and DST/NRF Cen...

All-carbon ferromagnetism derived from edge states in graphene nano-pore arrays

Experimental Demonstration of Printed Graphene Nano-flakes Enabled Flexible and Conformable Wideband Radar Absorbers

In this work, we have designed, fabricated and experimentally characterized a printed graphene nano-flakes enabled flexible and conformable wideband radar absorber. The absorber covers both X (8-12 GHz) and Ku (12-18 GHz) bands and is printed on flexible substrate using graphene nano-flakes conductive ink through stencil printing method. The measured results show that an effective absorption (a...

Localised States of Fabry-Perot Type in Graphene Nano-Ribbons