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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Preparation of graphene by exfoliation of graphite using wet ball milling
TL;DR: In this paper, a planetary mill was used to exfoliate graphite platelets into graphenes in a liquid medium, and irregular shaped single and few-layer graphene sheets (≤3 layers) having a thickness around 0.8-1.8 nm were found from the supernatant.
Journal ArticleDOI
Raman Spectroscopy Analysis of the Structure and Surface Chemistry of Ti3C2Tx MXene
Asia Sarycheva,Yury Gogotsi +1 more
TL;DR: In this article, a large family of 2D transition metal carbides and nitrides has been used for Ramaman spectroscopy of two-dimensional (2D) materials.
Journal ArticleDOI
Anomalously large reactivity of single graphene layers and edges toward electron transfer chemistries.
TL;DR: It is shown, for the first time, that the reactsivity of edges is at least two times higher than the reactivity of the bulk single graphene sheet, as supported by electron transfer theory.
Journal ArticleDOI
Escherichia coli bacteria reduce graphene oxide to bactericidal graphene in a self-limiting manner
Omid Akhavan,Elham Ghaderi +1 more
TL;DR: In this paper, the interaction of chemically exfoliated graphene oxide (GO) nanosheets and Escherichia coli bacteria living in mixed-acid fermentation with an anaerobic condition was investigated for different exposure times.
Journal ArticleDOI
A Review on Graphene-Based Gas/Vapor Sensors with Unique Properties and Potential Applications
Tao Wang,Da Huang,Zhi Yang,Shusheng Xu,Guili He,Xiaolin Li,Nantao Hu,Guilin Yin,Dannong He,Liying Zhang +9 more
TL;DR: Recent advantages in graphene preparation, sensor construction, and sensing properties of various graphene-based gas/vapor sensors, such as NH3, NO2, H2, CO, SO2,H2S, as well as vapor of volatile organic compounds are summarized.
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.