Tags: graphene

Description

Graphene is a one-atom-thick planar sheet of sp2-bonded carbon atoms that are densely packed in a honeycomb crystal lattice. The term Graphene was coined as a combination of graphite and the suffix -ene by Hanns-Peter Boehm, who described single-layer carbon foils in 1962. Graphene is most easily visualized as an atomic-scale chicken wire made of carbon atoms and their bonds. The crystalline or "flake" form of graphite consists of many graphene sheets stacked together.

Learn more about quantum dots from the many resources on this site, listed below. More information on Graphene can be found here.

Online Presentations (1-20 of 41)

  1. Modeling of Inter-ribbon Tunneling in Graphene

    11 Nov 2016 | | Contributor(s):: Maarten Van de Put, William Gerard Hubert Vandenberghe, Massimo V Fischetti

    IWCE presentation. In this paper we investigate the finite-size effect in nano-scaled graphene flakes. Improving on the bulk description, and because the structures are – atomistically speaking – large in size, we use the empirical pseudopotential method[2].

  2. The Role of Dimensionality on Phonon-Limited Charge Transport: from CNTs to Graphene

    27 Oct 2016 | | Contributor(s):: Jing Li, Yann-Michel Niquet

    IWCE 2015 presentation.

  3. NEMO5 and 2D Materials: Tuning Bandstructures, Wave Functions and Electrostatic Screening

    19 Oct 2016 | | Contributor(s):: Tillmann Christoph Kubis

    In this talk, I will briefly discuss the MLWF approach and compare it to DFT and atomistic tight binding. Initial results using the MLWF approach for 2D material based devices will be discussed and compared to experiments. These results unveil systematic band structure changes as functions of the...

  4. Many Body Effects on Optical Properties of Graphene

    13 Oct 2016 | | Contributor(s):: Subhasis Ghosh

    Graphene, a two-­dimensional (2D) material shows remarkable optical and electronic properties, such as a linear energy dispersion, chirality and half-­integer quantum Hall effect. Multilayer graphene flakes, held together by weak van der Waals forces have also attracted attention due to...

  5. Electronic and Vibrational Properties of 2D Materials from Monolayer to Bulk: Opportunity Unlimited

    21 Apr 2016 | | Contributor(s):: Mahesh R Neupane

    IWCE 2015 invited presentation. The placement of two dimensional (2D) materials such as hexagonal boron nitride (h-BN) and transition metal dichalcogenide (TMDC) at the forefront of materials and device research was pioneered by the discovery of graphene, an atomically thin 2D allotrope of...

  6. Multiscale Modeling of Graphene-Metal Contacts

    01 Feb 2016 | | Contributor(s):: T. Cusati, Gianluca Fiori, A. Fortunelli, Giuseppe Iannaccone

    IWCE 2015 presentation. The quality of contacts between metals and two- dimensional materials is a critical aspect for the performance of transistors based on two-dimensional materials. In this talk we focus on an approach to multiscale modeling of graphene- metal contacts, considering both...

  7. Simulation of Organic Solar Cell with Graphene Transparent Electrode

    13 Nov 2015 | | Contributor(s):: Paolo Paletti, giacomo ulisse, Giuseppe Iannaccone, Gianluca Fiori

    IWCE 2015 presentation. We present a simulation study of the performance of organic solar cell (OSC) exploiting graphene as transparent electrode. The approach is based on a multi-scale/multi-physics simulation framework, which is able to provide relevant information regarding the design...

  8. Self-Consistent Field and Master Equation Approach to Calculating the Dielectric Function of Graphene

    17 Sep 2015 | | Contributor(s):: Farhad Karimi, Irena Knezevic

    IWCE 2015 presentation.  Abstract and more information to be added at a later date.

  9. Multi-Format Roll-to-Roll Graphene Nanomanufacturing

    21 Jul 2015 | | Contributor(s):: Timothy S Fisher

  10. The PhotonicVASEfit Tutorial

    18 Jun 2015 | | Contributor(s):: Ludmila Prokopeva, Alexander V. Kildishev

    This online presentation will help you to get started with our simulation tool PhotonicVASEfit. In the introduction we explain the scenarios in which the simulation tool can be used. We describe the fitting models and give a demo with complete how-to-use instructions.

  11. Graphene: Materials, Physics and Devices of a Unique 2D Electronic System (2DES)

    14 Apr 2015 | | Contributor(s):: Yong P. Chen

  12. Symmetry, Dimension, and Spin: Understanding transport in 2D 'phosphorene'

    03 Mar 2015 | | Contributor(s):: Ian Appelbaum

    Despite its low atomic number and inversion symmetry, recent electronic measurements demonstrate that (group-IV) graphene has a greatly disappointing spin lifetime, corroborated by theory showing strong spin-flip scattering by flexural (out-of-plane) phonons. There exists a class of graphene-like...

  13. Spaser in Quantum Regime

    12 Feb 2015 | | Contributor(s):: Mark I Stockman

    The spaser have been introduced theoretically and discovered experimentally. We briefly consider quantum theory and latest results on spaser as an ultrafast quantum generator and amplifier of nanoplasmonic fields, ultrabright nanolabel, and highly-efficient nanosensor. We present latest original...

  14. [Illinois] Metal and Semiconductor Nanoparticles Supported on Graphene for Energy Conversion and Heterogeneous Catalysis

    17 Dec 2013 | | Contributor(s):: M. Samy El Shall

    Graphene has attracted great interest for a fundamental understanding of its unique structural and electronic properties and also for important potential applications in nanoelectronics and devices. The combination of highest mobility, thermal, chemical, and mechanical stability with the high...

  15. The Road Ahead for Carbon Nanotube Transistors

    09 Jul 2013 | | Contributor(s):: Aaron Franklin

    In this talk, recent advancements in the nanotube transistor field will be reviewed, showing why CNTFETs are worth considering now more than ever. Then, the material- and device-related challenges to realizing a nanotube-driven digital technology will be covered.

  16. Carbon-Based Nanoswitch Logic

    28 Mar 2013 | | Contributor(s):: Stephen A. Campbell

    This talk discusses a rather surprising possibility: the use of carbon-based materials such as carbon nanotubes and grapheneto make nanomechanical switches with at least an order of magnitude lower power dissipation than the low power CMOS options and performance between the various CMOS...

  17. Is Graphene Alone in the Universe?

    05 Dec 2012 | | Contributor(s):: Jacob B. Khurgin

    In this talk we show that many heterostructures based on III-V (InGaSb) and II-VI (HgCdTe) semiconductors can be engineered to have all the above properties nearly indistinguishable from those of graphene, while adding certain degree of versatility, such as ability to have not only 2-dimensional,...

  18. NEMO5 Tutorial 4C: Graphene Nanostructures

    20 Jul 2012 | | Contributor(s):: Junzhe Geng

  19. Journey Along the Carbon Road

    19 Apr 2012 | | Contributor(s):: Zhihong Chen

    I will discuss two distinct topics: In the first part of my talk I will present results on carbon nanotubes focusing on high performance computing with the aim to replace silicon in logic device applications. Specifically, the ballistic transport regime that has been reached with the shortest...

  20. Energy Dissipation at the Nanoscale: from graphene to phase-change materials

    20 Dec 2011 | | Contributor(s):: Eric Pop

    This talk will present recent highlights from our studies of dissipation in novel nanoelectronics based on graphene and phase-change materials. We have investigated both Joule heating and Peltier cooling in graphene electronics, and found that the latter could be tuned to partially remove the...