Academic literature on the topic 'Graphene based 2-dimensional systems'

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Journal articles on the topic "Graphene based 2-dimensional systems"

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Dolina, Ekaterina S., Pavel A. Kulyamin, Anastasiya A. Grekova, Alexey I. Kochaev, Mikhail M. Maslov, and Konstantin P. Katin. "Thermal Stability and Vibrational Properties of the 6,6,12-Graphyne-Based Isolated Molecules and Two-Dimensional Crystal." Materials 16, no. 5 (2023): 1964. http://dx.doi.org/10.3390/ma16051964.

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We report the geometry, kinetic energy, and some optical properties of the 6,6,12-graphyne-based systems. We obtained the values of their binding energies and structural characteristics such as bond lengths and valence angles. Moreover, using nonorthogonal tight-binding molecular dynamics, we carried out a comparative analysis of the thermal stability of 6,6,12-graphyne-based isolated fragments (oligomer) and two-dimensional crystals constructed on its basis in a wide temperature range from 2500 to 4000 K. We found the temperature dependence of the lifetime for the finite graphyne-based oligom
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KAN, ERJUN, ZHENYU LI, and JINLONG YANG. "MAGNETISM IN GRAPHENE SYSTEMS." Nano 03, no. 06 (2008): 433–42. http://dx.doi.org/10.1142/s1793292008001350.

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Graphene has attracted great interest in materials science, owing to its novel electronic structures. Recently, magnetism discovered in graphene-based systems has opened up the possibility of their spintronics application. This paper provides a comprehensive review of the magnetic behaviors and electronic structures of graphene systems, including two-dimensional graphene, one-dimensional graphene nanoribbons, and zero-dimensional graphene nanoclusters. Theoretical research suggests that such metal-free magnetism mainly comes from the localized states or edges states. By applying an external el
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Marchenko, D., D. V. Evtushinsky, E. Golias, A. Varykhalov, Th Seyller, and O. Rader. "Extremely flat band in bilayer graphene." Science Advances 4, no. 11 (2018): eaau0059. http://dx.doi.org/10.1126/sciadv.aau0059.

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We propose a novel mechanism of flat band formation based on the relative biasing of only one sublattice against other sublattices in a honeycomb lattice bilayer. The mechanism allows modification of the band dispersion from parabolic to “Mexican hat”–like through the formation of a flattened band. The mechanism is well applicable for bilayer graphene—both doped and undoped. By angle-resolved photoemission from bilayer graphene on SiC, we demonstrate the possibility of realizing this extremely flattened band (< 2-meV dispersion), which extends two-dimensionally in a k-space area around the
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Knoll, T., G. Jenke, A. Brenner, et al. "Zweifarben-Druckanlage für die Sensorherstellung/Two-colour printing machine for sensor production - Rotary printing of foil-based graphene sensors." wt Werkstattstechnik online 107, no. 11-12 (2017): 827–33. http://dx.doi.org/10.37544/1436-4980-2017-11-12-51.

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Der Fachartikel stellt eine kompakte Zweifarben-Druckanlage für die Fertigung folienbasierter Sensoren aus Graphen vor. Mithilfe einer Graphentinte sowie eines rotativen Tiefdruckverfahrens lassen sich zweidimensionale Elektrodenstrukturen beliebiger Geometrie in hohen Stückzahlen fertigen. Beschrieben werden die Druckanlage, die Herstellung der Tiefdruckzylinder und der graphenbasierten Tinte sowie die bisher beim Drucken von Elektroden für zellbasierte Sensoren erzielten Ergebnisse.   The article presents a compact two-colour printing system for the production of foil-based sensors
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5

Barlas, Yafis, Kun Yang, and A. H. MacDonald. "Quantum Hall effects in graphene-based two-dimensional electron systems." Nanotechnology 23, no. 5 (2012): 052001. http://dx.doi.org/10.1088/0957-4484/23/5/052001.

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6

Chen, Yiwen, Habibullah, Guanghui Xia, et al. "Palladium-Phosphide-Modified Three-Dimensional Phospho-Doped Graphene Materials for Hydrogen Storage." Materials 16, no. 12 (2023): 4219. http://dx.doi.org/10.3390/ma16124219.

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The development of efficient hydrogen storage materials is crucial for advancing hydrogen-based energy systems. In this study, we prepared a highly innovative palladium-phosphide-modified P-doped graphene hydrogen storage material with a three-dimensional configuration (3D Pd3P0.95/P-rGO) using a hydrothermal method followed by calcination. This 3D network hindering the stacking of graphene sheets provided channels for hydrogen diffusion to improve the hydrogen adsorption kinetics. Importantly, the construction of the three-dimensional palladium-phosphide-modified P-doped graphene hydrogen sto
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7

Wang, Xiunan, Yi Liu, Jingcheng Xu, et al. "Molecular Dynamics Study of Stability and Diffusion of Graphene-Based Drug Delivery Systems." Journal of Nanomaterials 2015 (2015): 1–14. http://dx.doi.org/10.1155/2015/872079.

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Graphene, a two-dimensional nanomaterial with unique biomedical properties, has attracted great attention due to its potential applications in graphene-based drug delivery systems (DDS). In this work graphene sheets with various sizes and graphene oxide functionalized with polyethylene glycol (GO-PEG) are utilized as nanocarriers to load anticancer drug molecules including CE6, DOX, MTX, and SN38. We carried out molecular dynamics calculations to explore the energetic stabilities and diffusion behaviors of the complex systems with focuses on the effects of the sizes and functionalization of gr
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Jana, Susmita, Arka Bandyopadhyay, Sujoy Datta, Debaprem Bhattacharya, and Debnarayan Jana. "Emerging properties of carbon based 2D material beyond graphene." Journal of Physics: Condensed Matter 34, no. 5 (2021): 053001. http://dx.doi.org/10.1088/1361-648x/ac3075.

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Abstract Graphene turns out to be the pioneering material for setting up boulevard to a new zoo of recently proposed carbon based novel two dimensional (2D) analogues. It is evident that their electronic, optical and other related properties are utterly different from that of graphene because of the distinct intriguing morphology. For instance, the revolutionary emergence of Dirac cones in graphene is particularly hard to find in most of the other 2D materials. As a consequence the crystal symmetries indeed act as a major role for predicting electronic band structure. Since tight binding calcu
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Koppens, F. H. L., T. Mueller, Ph Avouris, A. C. Ferrari, M. S. Vitiello, and M. Polini. "Photodetectors based on graphene, other two-dimensional materials and hybrid systems." Nature Nanotechnology 9, no. 10 (2014): 780–93. http://dx.doi.org/10.1038/nnano.2014.215.

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10

Si, Wei, Chang Chen, Gensheng Wu, et al. "High Efficient Seawater Desalination Based on Parallel Nanopore Systems." Nano 16, no. 07 (2021): 2150077. http://dx.doi.org/10.1142/s1793292021500776.

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Graphene is one of the most attractive two-dimensional materials that can be used for efficient desalination due to its ideal physical properties and high performance in ion selectivity and salt rejection. Here, in this paper, molecular dynamics simulations were applied to investigate the possibility of using a parallel nanopore system to pump ions so that the ions of both cation and anion species in the middle compartment could be evacuated at an extremely rapid rate. By building hexagonal parallel single-layer graphene films with spacing of 3.0 nm and changing the pore numbers and surface ch
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