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.

Resources (81-100 of 111)

  1. Chemically Enhanced Carbon-Based Nanomaterials and Devices

    Online Presentations | 09 Nov 2010 | Contributor(s):: Mark Hersam

    Carbon-based nanomaterials have attracted significant attention due to their potential to enable and/or improve applications such as transistors, transparent conductors, solar cells, batteries, and biosensors. This talk will delineate chemical strategies for enhancing the electronic and optical...

  2. Nano*High: X-rays, Lasers, and Molecular Movies

    Online Presentations | 25 Sep 2010 | Contributor(s):: Roger W. Falcone

    X-ray imaging is an excellent method to make visible what would normally be invisible - who hasn't had an X-ray at the doctor or dentist's office before? At the Lawrence Berkeley National Lab, the Advanced Light Source is a gigantic X-ray imaging machine. Dr. Roger Falcone discusses X-ray...

  3. Graphene Switch Box

    Tools | 01 Apr 2009 | Contributor(s):: Sansiri Tanachutiwat, wei wang

    Graphene Switch Box for FPGA Interconnects

  4. Ripples and Warping of Graphene: A Theoretical Study

    Online Presentations | 19 May 2010 | Contributor(s):: Umesh V. Waghmare

    We use first-principles density functional theory based analysis to understand formation of ripples in graphene and related 2-D materials. For an infinite graphene, we show that ripples are linked with a low energy branch of phonons that exhibits quadratic dispersion at long wave-lengths. Many...

  5. ninithi

    Downloads | 07 May 2010 | Contributor(s):: Chanaka Suranjith Rupasinghe, Mufthas Rasikim

    ninithi which is a free and opensource modelling software, can be used to visualize and analyze carbon allotropes used in nanotechnology. You can generate 3-D visualization of Carbon nanotubes, Fullerenes, Graphene and Carbon nanoribbons and analyze the band structures of nanotubes and graphene.

  6. Nanotechnology Animation Gallery

    Teaching Materials | 20 Apr 2010 | Contributor(s):: Saumitra Raj Mehrotra, Gerhard Klimeck

    Animations and visualization are generated with various nanoHUB.org tools to enable insight into nanotechnology and nanoscience. Click on image for detailed description and larger image download. Additional animations are also...

  7. Graphene nanoribbon bandstructure

    Animations | 09 Apr 2010 | Contributor(s):: Saumitra Raj Mehrotra, Gerhard Klimeck

    Graphene nanoribbons (often abbreviated as GNR) are planar strips of graphene with a thickness of approximately one atom. Carbon atoms in graphene are sp2-hybridized with a carbon-carbon bond length of approximately 0.142 nm. As an electronic material, graphene exhibits many desirable properties,...

  8. Surface Characterization Studies of Carbon Materials: SS-DNA, SWCNT, Graphene, HOPG

    Online Presentations | 30 Jan 2010 | Contributor(s):: Dmitry Zemlyanov

    In this presentation examples of surface characterization studies of carbon specimens will be presented. (1) In particularly, the systematic XPS (X-ray photoelectron spectroscopy) characterization of graphene grown on the SiC surface will be reported. This work demonstrates a use for XPS to...

  9. Lecture 4: Graphene: An Experimentalist's Perspective

    Online Presentations | 21 Sep 2009 | Contributor(s):: Joerg Appenzeller

  10. ECE 656 Lecture 27: Scattering of Bloch Electrons

    Online Presentations | 13 Nov 2009 | Contributor(s):: Mark Lundstrom

    Outline:Umklapp processesOverlap integralsADP Scattering in graphene

  11. Lecture 5: NEGF Simulation of Graphene Nanodevices

    Online Presentations | 21 Sep 2009 | Contributor(s):: Supriyo Datta

  12. 2009 NCN@Purdue Summer School: Electronics from the Bottom Up

    Workshops | 09 Jul 2009 | Contributor(s):: Supriyo Datta, Mark Lundstrom, Muhammad A. Alam, Joerg Appenzeller

    The school will consist of two lectures in the morning on the Nanostructured Electronic Devices: Percolation and Reliability and an afternoon lecture on Graphene Physics and Devices. A hands on laboratory session will be available in the afternoons.

  13. Low Bias Transport in Graphene: An Introduction (lecture notes)

    Presentation Materials | 22 Sep 2009 | Contributor(s):: Mark Lundstrom, tony low, Dionisis Berdebes

    These notes complement a lecture with the same title presented by Mark Lundstrom and Dionisis Berdebes, at the NCN@Purdue Summer School, July 20-24, 2009.

  14. Colloquium on Graphene Physics and Devices

    Courses | 29 Jul 2009 | Contributor(s):: Joerg Appenzeller, Supriyo Datta, Mark Lundstrom

    This short course introduces students to graphene as a fascinating research topic as well as to develop their skill in problem solving using the tools and techniques of electronics from the bottom up.

  15. Lecture 6: Graphene PN Junctions

    Online Presentations | 21 Sep 2009 | Contributor(s):: Mark Lundstrom

    Outline:IntroductionElectron optics in grapheneTransmission across NP junctionsConductance of PN and NN junctionsDiscussionSummary

  16. Lecture 3: Low Bias Transport in Graphene: An Introduction

    Online Presentations | 18 Sep 2009 | Contributor(s):: Mark Lundstrom

    Outline:Introduction and ObjectivesTheoryExperimental approachResultsDiscussionSummaryLecture notes are available for this lecture.

  17. ECE 656 Lecture 4: Density of States - Density of Modes

    Online Presentations | 10 Sep 2009 | Contributor(s):: Mark Lundstrom

    Outline:Density of states Example: graphene Density of modes Example: graphene Summary

  18. Crystal Viewer Demonstration: Bravais Lattices

    Animations | 03 Jun 2009 | Contributor(s):: Gerhard Klimeck, Benjamin P Haley

    This video shows the exploration of several crystal structures using the Crystal Viewer tool. Several powerful features of this tool are demonstrated.

  19. Crystal Viewer Demonstration: Bravais Lattices 2

    Animations | 03 Jun 2009 | Contributor(s):: Gerhard Klimeck, Benjamin P Haley

    This video shows the exploration of several crystal structures using the Crystal Viewer tool. Several powerful features of this tool are demonstrated

  20. Crystal Viewer Demonstration: Various Crystal Systems

    Animations | 03 Jun 2009 | Contributor(s):: Gerhard Klimeck, Benjamin P Haley

    This video shows the use of the Crystal Viewer Tool to visualize several crystal systems, including Si, GaAs, C60 Buckyball, and a carbon nanotube. Crystal systems are rotated in 3D, zoomed in and out, and the lattice style changes from sticks and balls to lines to spheres.