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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Electronic transport in chemical vapor deposited graphene synthesized on Cu: Quantum Hall effect and weak localization
Helin Cao,Qingkai Yu,Luis A. Jauregui,Jifa Tian,Wei Wu,Zhihong Liu,Romaneh Jalilian,Daniel K. Benjamin,Zhigang Jiang,Jiming Bao,Shin-Shem Pei,Yong P. Chen +11 more
TL;DR: In this article, the electronic properties of graphene synthesized by chemical vapor deposition (CVD) on copper then transferred to SiO2/Si were reported, showing ambipolar field effect (with on/off ratio ∼5 and carrier mobilities up to ∼3000 cm2/V
Journal ArticleDOI
Scalable synthesis of few-layer graphene ribbons with controlled morphologies by a template method and their applications in nanoelectromechanical switches.
TL;DR: This work develops a template chemical vapor deposition method for scalable synthesis of few-layer graphene ribbons (FLGRs) with controlled morphologies, which provides an application of graphene in NEM switches and a logic gate by using the FLGRs.
Journal ArticleDOI
Removal of Cu(II) ions from aqueous solution using sulfonated magnetic graphene oxide composite
Xinjiang Hu,Yunguo Liu,Hui Wang,Anwei Chen,Guangming Zeng,Si-mian Liu,Yi-ming Guo,Xi Hu,Ting-ting Li,Yaqin Wang,Lu Zhou,Shaoheng Liu +11 more
TL;DR: In this article, a sulfonated magnetic graphene oxide composite (SMGO) was synthesized from graphene oxide and was used as adsorbent for removing Cu(II) ions from aqueous solution.
Journal ArticleDOI
Stable nanosecond pulse generation from a graphene-based passively Q-switched Yb-doped fiber laser.
TL;DR: To the best of the knowledge, this is the first report for passively Q-switched sub-100-ns pulse operation of a graphene-based saturable absorber in a Yb-doped fiber laser.
Journal ArticleDOI
Aqueous proton transfer across single-layer graphene
Jennifer L. Achtyl,Raymond R. Unocic,Lijun Xu,Yu Cai,Muralikrishna Raju,Weiwei Zhang,Robert L. Sacci,Ivan Vlassiouk,Pasquale F. Fulvio,Pasquale F. Fulvio,Panchapakesan Ganesh,David J. Wesolowski,Sheng Dai,Adri C. T. van Duin,Matthew Neurock,Franz M. Geiger +15 more
TL;DR: Graphene supported on fused silica is subject to cycles of high and low pH, and it is shown that protons transfer reversibly from the aqueous phase through the graphene to the other side where they undergo acid–base chemistry with the silica hydroxyl groups.
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.