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
TLDR
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.Abstract:
Graphene is the two-dimensional building block for carbon allotropes of every other dimensionality We show that its electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers The D peak second order changes in shape, width, and position for an increasing number of layers, reflecting the change in the electron bands via a double resonant Raman process The G peak slightly down-shifts This allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research arearead more
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Photo-thermoelectric effect at a graphene interface junction.
TL;DR: In this article, the optoelectronic response of a single-bilayer interface junction using photocurrent microscopy was investigated and it was shown that the generation of PC is by a photothermoelectric effect.
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Graphene oxide-polydopamine derived N, S-codoped carbon nanosheets as superior bifunctional electrocatalysts for oxygen reduction and evolution
TL;DR: In this article, a method for sulfur incorporation into carbon framework has been developed facilely on the basis of graphene oxide-polydopamine (GD) hybrids to derive the N, S-codoped mesoporous carbon nanosheets.
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Raman characterization of defects and dopants in graphene
TL;DR: Generally defects degrade the figures of merit for devices, such as carrier mobility and conductivity, whereas doping provides a means to tune the carrier concentration in graphene thereby enabling the engineering of novel material systems.
Journal ArticleDOI
Photosensor Device Based on Few-Layered WS2 Films
Nestor Perea-Lopez,Ana Laura Elías,Ayse Berkdemir,A. Castro-Beltrán,Humberto R. Gutierrez,Simin Feng,Ruitao Lv,Takuya Hayashi,Florentino López-Urías,Sujoy Ghosh,Baleeswaraiah Muchharla,Saikat Talapatra,Humberto Terrones,Mauricio Terrones,Mauricio Terrones +14 more
TL;DR: In this article, a few-layered WS2 is synthesized by chemical vapor deposition on quartz, which is successfully used as light sensors and the results indicate that the electrical response strongly depends on the photon energy from the excitation lasers.
Journal ArticleDOI
Large Areal Mass, Flexible and Free-Standing Reduced Graphene Oxide/Manganese Dioxide Paper for Asymmetric Supercapacitor Device
TL;DR: The electrochemical performance of the bent asymmetric device with a total active mass of 15 mg remains similar to the one in the flat configuration, demonstrating good mechanical robustness of the device.
References
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疟原虫var基因转换速率变化导致抗原变异[英]/Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A
TL;DR: PfPMP1)与感染红细胞、树突状组胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作�ly.