) to study the graphene optical properties . The computer you are using is not registered by an institution with a subscription to this article. Recently, graphene transmittance spectra were observed  and the dynamical conductivity was found as ¾(!) General expression for conductivity dispersion in a band metal 889 4. The frequency dispersion of the dynamic conductivity of graphene, of a multilayer graphene, and of IV–VI semiconductors is considered as a function of the temperature and carrier density in the range of frequencies that are higher than the carrier relaxation rate but are lower than the conduction band width. Consequently, the optical properties of the reduced GO (r-GO) vary between the different reduction methods depending on residual oxygen group coverage and defects within the carbon sheets. System Upgrade on Fri, Jun 26th, 2020 at 5pm (ET) During this period, our website will be offline for less than an hour but the E-commerce and registration of new … If you have a user account, you will need to reset your password the next time you login. We show that the optical graphene properties are determined by the direct interband electron transitions. For corporate researchers we can also follow up directly with your R&D manager, or the information We show that the optical graphene properties are determined by the direct interband electron transitions. Graphene has a tensile strength (the maximum stress that a material can withstand while being stretched or pulled before failing or breaking) of over 1 Tpa. The graphene transmittance in the…, Electronic and optical properties of doped graphene, Impact of chemical potential on the reflectance of graphene in the infrared and microwave domains, Mode manipulation and near-THz absorptions in binary grating-graphene layer structures, Optical properties of large-area polycrystalline chemical vapor deposited graphene by spectroscopic ellipsometry. © 2008 Uspekhi Fizicheskikh Nauk and P N Lebedev Physics Institute of the Russian Academy of Sciences A narrow gap and the linearity of the electron spectrum, which are common features of these materials, are responsible for a singularity of the dielectric function (logarithmic in the real part and step-like in the imaginary part) at the threshold of direct interband transitions and, accordingly, for an anomalously large permittivity in IV–VI semiconductors. Condensed matter : an Institute of Physics journal, By clicking accept or continuing to use the site, you agree to the terms outlined in our, Modifying Graphene to Tweak its Optical Properties. The calculated and measured dielectric functions are in a very good agreement. The graphene transmittance in the optical range is frequency-independent and its departure from unity yields the value of the fine structure constant. Institutional subscribers have access to the current volume, plus a Export citation and abstract Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI. You do not need to reset your password if you login via Athens or an Institutional login. Physics-Uspekhi, Volume 51, The optical visibility of both monolayer and bilayer graphene was theoretically studied in Ref. = e2=4„h in agreement with the theory. Some features of the site may not work correctly. Its optical properties can be varied by tuning the size of sp 2-rich graphene domains. Optical properties of graphene and IV–VI semiconductors L A Falkovsky DOI: 10.1070/PU2008v051n09ABEH006625 Contents 1. Introduction 887 2. It is also recognized as the toughest 2D material—much harder than either steel or diamond of the same dimensions. You will only need to do this once. You are currently offline. Number 9, 1 Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow region, Russian Federation, 2 Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow region, Russian Federation, https://doi.org/10.1070/PU2008v051n09ABEH006625. Form and we will follow up with your librarian or Institution on your behalf. Tunable terahertz optical properties of graphene in dc electric fields, Optical properties of graphene, silicene, germanene, and stanene from IR to far UV – A first principles study, Optical properties of graphene based annular photonic crystals.
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