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
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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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Edge-functionalized and substitutionally doped graphene nanoribbons: Electronic and spin properties
TL;DR: In this paper, the electronic properties of chemically modified armchair ribbons were investigated by means of density functional theory, and it was shown that edge substitutions at low density do not significantly alter the band gap, while bulk substitution promotes the onset of semiconducting-metal transitions.
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van der Waals Heterostructures with High Accuracy Rotational Alignment.
Kyounghwan Kim,Matthew Yankowitz,Babak Fallahazad,Sangwoo Kang,Hema C. P. Movva,Shengqiang Huang,Stefano Larentis,Chris M. Corbet,Takashi Taniguchi,Kenji Watanabe,Sanjay K. Banerjee,Brian J. LeRoy,Emanuel Tutuc +12 more
TL;DR: To illustrate the applicability of this technique to realize vdW heterostructures in which the functionality is critically dependent on rotational alignment, this work demonstrates resonant tunneling double bilayer graphene heterostructure separated by hexagonal boron-nitride dielectric.
Journal ArticleDOI
Chemical vapor deposition of thin graphite films of nanometer thickness
Alexander N. Obraztsov,Alexander N. Obraztsov,Ekaterina A. Obraztsova,Anastasia V. Tyurnina,Aleksey A. Zolotukhin +4 more
TL;DR: In this paper, an atomically smooth surface with the atomic arrangement typical of graphite between the ridges was revealed by using scanning tunneling microscopy (STM) data.
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The effect of the substrate on the Raman and photoluminescence emission of single-layer MoS2
TL;DR: In this paper, the authors quantitatively study the Raman and photoluminescence (PL) emission from single-layer molybdenum disulfide (MoS2) on dielectric (SiO2, hexagonal boron nitride, mica and polymeric dielectrics Gel-Film®) and conducting substrates (Au and few-layer graphene).
Journal ArticleDOI
Field-effect transistors made from solution-grown two-dimensional tellurene
Yixiu Wang,Gang Qiu,Ruoxing Wang,Shouyuan Huang,Qingxiao Wang,Yuanyue Liu,Yuanyue Liu,Yuchen Du,William A. Goddard,Moon J. Kim,Xianfan Xu,Peide D. Ye,Wenzhuo Wu +12 more
TL;DR: In this paper, the fabrication of large-area, high-quality 2D tellurium (tellurene) using a substrate-free solution process was reported. But this method suffers from a variety of drawbacks, including limitations in crystal size and stability.
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.