Items where authors include "Helgesen, G"

Article

Hage, FS, Kepaptsoglou, DM, Seabourne, CR et al. (5 more authors) (2014) Dielectric response of pentagonal defects in multilayer graphene nano-cones. Nanoscale, 6. 1833 - 1839. ISSN 2040-3364

Hage, FS, Ramasse, QM, Kepaptsoglou, DM et al. (4 more authors) (2013) Topologically induced confinement of collective modes in multilayer graphene nanocones measured by momentum-resolved STEM-VEELS. Physical Review B - Condensed Matter and Materials Physics, 88 (15). ARTN 155408. ISSN 0163-1829