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 (21-40 of 41)

  1. ECE 656 Lecture 3: Density of States

    07 Sep 2011 | | Contributor(s):: Mark Lundstrom

    Outline:Density of statesExample: grapheneDiscussionSummary

  2. Lecture 10: Case study-Near-equilibrium Transport in Graphene

    19 Aug 2011 | | Contributor(s):: Mark Lundstrom

    Near-equilibrium transport in graphene as an example of how to apply the concepts in lectures 1-8.

  3. How to Turn Graphene into a Robust Topological Insulator Using Adatoms

    12 Jul 2011 | | Contributor(s):: Jason Alicea

    In this talk I will discuss a recent proposal for generating a robust TI state in a more readily available two-dimensional system -- graphene.

  4. Levitated Spinning Graphene

    18 Jan 2011 | | Contributor(s):: Bruce E. Kane

    I will describe a method for levitating micron-sized few layer graphene flakes in a quadrupole ion trap. Starting from a liquid suspension containing graphene, charged flakes are injected into the trap using the electrospray ionization technique and are probed optically.

  5. Translational Research in Nano and Bio Mechanics

    18 Nov 2010 | | Contributor(s):: Ken P. Chong

    One of the most challenging problems is the integration and interface between wet (biological) and dry (structural) materials. Nano and bio science and engineering is one of the frontiers in transformative and translational research. The transcendent technologies include nanotechnology,...

  6. Chemically Enhanced Carbon-Based Nanomaterials and Devices

    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...

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

    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...

  8. Ripples and Warping of Graphene: A Theoretical Study

    08 Jun 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...

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

    16 Feb 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...

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

    12 Feb 2010 | | Contributor(s):: Joerg Appenzeller

  11. ECE 656 Lecture 27: Scattering of Bloch Electrons

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

    Outline:Umklapp processesOverlap integralsADP Scattering in graphene

  12. Lecture 5: NEGF Simulation of Graphene Nanodevices

    23 Sep 2009 | | Contributor(s):: Supriyo Datta

  13. Lecture 6: Graphene PN Junctions

    22 Sep 2009 | | Contributor(s):: Mark Lundstrom

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

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

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

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

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

    14 Sep 2009 | | Contributor(s):: Mark Lundstrom

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

  16. ECE 659 Lecture 33: Thermoelectricity

    16 Apr 2009 | | Contributor(s):: Supriyo Datta

  17. ECE 495N Lecture 21: Graphene Bandstructures

    03 Nov 2008 | | Contributor(s):: Supriyo Datta

  18. Some Important Aspects of the Chemistry of Nanomaterials

    01 Jul 2008 | | Contributor(s):: C.N.R. Rao

    Keynote address for the launch of the Center for Analytical Instrumentation Development.

  19. Nano Carbon: From ballistic transistors to atomic drumheads

    14 May 2008 | | Contributor(s):: Paul L. McEuen

    Carbon takes many forms, from precious diamonds to lowly graphite. Surprisingly, it is the latter that is the most prized by nano physicists. Graphene, a single layer of graphite, can serve as an impenetrable membrane a single atom thick. Rolled up into a nanometer-diameter cylinder--a carbon...

  20. The Novel Nanostructures of Carbon

    28 Feb 2008 | | Contributor(s):: Gene Dresselhaus

    A brief review will be given of the physical underpinnings of carbon nanostructures that were developed over the past 60 years, starting with the electronic structure and physical properties of graphene and graphite, and then moving to graphite intercalation compounds which contained the first...