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Carbon-Based Nanoswitch Logic
Online Presentations | 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...
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Is Graphene Alone in the Universe?
Online Presentations | 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,...
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NEMO5 Tutorial 4C: Graphene Nanostructures
Online Presentations | 20 Jul 2012 | Contributor(s):: Junzhe Geng
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Journey Along the Carbon Road
Online Presentations | 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...
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Energy Dissipation at the Nanoscale: from graphene to phase-change materials
Online Presentations | 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...
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ECE 656 Lecture 3: Density of States
Online Presentations | 07 Sep 2011 | Contributor(s):: Mark Lundstrom
Outline:Density of statesExample: grapheneDiscussionSummary
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Lecture 10: Case study-Near-equilibrium Transport in Graphene
Online Presentations | 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.
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How to Turn Graphene into a Robust Topological Insulator Using Adatoms
Online Presentations | 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.
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Levitated Spinning Graphene
Online Presentations | 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.
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Translational Research in Nano and Bio Mechanics
Online Presentations | 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,...
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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...
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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...
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Ripples and Warping of Graphene: A Theoretical Study
Online Presentations | 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...
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Surface Characterization Studies of Carbon Materials: SS-DNA, SWCNT, Graphene, HOPG
Online Presentations | 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...
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Lecture 4: Graphene: An Experimentalist's Perspective
Online Presentations | 12 Feb 2010 | Contributor(s):: Joerg Appenzeller
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ECE 656 Lecture 27: Scattering of Bloch Electrons
Online Presentations | 13 Nov 2009 | Contributor(s):: Mark Lundstrom
Outline:Umklapp processesOverlap integralsADP Scattering in graphene
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Lecture 5: NEGF Simulation of Graphene Nanodevices
Online Presentations | 23 Sep 2009 | Contributor(s):: Supriyo Datta
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Lecture 6: Graphene PN Junctions
Online Presentations | 22 Sep 2009 | Contributor(s):: Mark Lundstrom
Outline:IntroductionElectron optics in grapheneTransmission across NP junctionsConductance of PN and NN junctionsDiscussionSummary
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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.
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ECE 656 Lecture 4: Density of States - Density of Modes
Online Presentations | 14 Sep 2009 | Contributor(s):: Mark Lundstrom
Outline:Density of states Example: graphene Density of modes Example: graphene Summary