S
S. Roth
Researcher at Max Planck Society
Publications - 285
Citations - 27078
S. Roth is an academic researcher from Max Planck Society. The author has contributed to research in topics: Carbon nanotube & Polyacetylene. The author has an hindex of 44, co-authored 281 publications receiving 25195 citations.
Papers
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Journal ArticleDOI
Raman spectrum of graphene and graphene layers.
Andrea C. Ferrari,Jannik C. Meyer,Vittorio Scardaci,Cinzia Casiraghi,Michele Lazzeri,Francesco Mauri,S. Piscanec,Da Jiang,K. S. Novoselov,S. Roth,A. K. Geim +10 more
TL;DR: This work shows that graphene's electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers, and allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research area.
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The structure of suspended graphene sheets
Jannik C. Meyer,A. K. Geim,Mikhail I. Katsnelson,Kostya S. Novoselov,Timothy J. Booth,S. Roth +5 more
TL;DR: These studies by transmission electron microscopy reveal that individual graphene sheets freely suspended on a microfabricated scaffold in vacuum or air are not perfectly flat: they exhibit intrinsic microscopic roughening such that the surface normal varies by several degrees and out-of-plane deformations reach 1 nm.
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Experimental observation of scaling laws for alternating current and direct current conductivity in polymer-carbon nanotube composite thin films
B. E. Kilbride,Jonathan N. Coleman,J. Fraysse,Patrick Fournet,Martin Cadek,Anna Drury,Stefan Hutzler,S. Roth,Werner J. Blau +8 more
TL;DR: In this article, alternating current and direct current (DC) conductivities have been measured in polymer-nanotube composite thin films for a range of concentrations of multi-wall nanotubes in two polymer hosts.
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On the roughness of single- and bi-layer graphene membranes
Jannik C. Meyer,Jannik C. Meyer,A. K. Geim,Mikhail I. Katsnelson,K. S. Novoselov,Dirk Obergfell,S. Roth,Caglar Girit,Caglar Girit,Alex Zettl,Alex Zettl +10 more
TL;DR: In this paper, a detailed transmission electron microscopy and electron diffraction study of the thinnest possible membrane, a single layer of carbon atoms suspended in vacuum and attached only at its edges, is presented.
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Polarized Raman Spectroscopy on Isolated Single-Wall Carbon Nanotubes
TL;DR: Orientation-dependent measurements reveal maximum intensity of all Raman modes when the nanotubes are aligned parallel to the polarization of the incident laser light, which deviates from the selection rules predicted by theoretical studies.