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Tags: carbon nanotubes

Description

100 amps of electricity crackle in a vacuum chamber, creating a spark that transforms carbon vapor into tiny structures. Depending on the conditions, these structures can be shaped like little, 60-atom soccer balls, or like rolled-up tubes of atoms, arranged in a chicken-wire pattern, with rounded ends. These tiny, carbon nanotubes, discovered by Sumio Iijima at NEC labs in 1991, have amazing properties. They are 100 times stronger than steel, but weigh only one-sixth as much. They are incredibly resilient under physical stress; even when kinked to a 120-degree angle, they will bounce back to their original form, undamaged. And they can carry electrical current at levels that would vaporize ordinary copper wires.

Learn more about carbon nanotubes from the many resources on this site, listed below. More information on Carbon nanotubes can be found here.

All Categories (81-100 of 313)

  1. The electrical field from the gate of CNFET can not affect the transistor.

    Open | Responses: 2

    Hi all,

    I tried to fabricate the Carbon nanotube field effect transistor (CNFET) for around half a year, however, none of them is working till now. The main problem was the source to...

    http://nanohub.org/answers/question/60

  2. Nano Carbon: From ballistic transistors to atomic drumheads

    14 May 2008 | Online Presentations | 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...

    http://nanohub.org/resources/4398

  3. Carbon Nanotechnology: Scientific and Technological Issues

    24 Feb 2008 | Online Presentations | Contributor(s): Joe Lyding

    Carbon nanotechnologies based on single-walled carbon nanotubes (SWNTs) and graphene (a single atomic layer of graphite) are being pursued for a wide range of technological...

    http://nanohub.org/resources/4089

  4. Selected Properties of Carbon Nanostructures: from Exotic Fullerenes to Nanotubes

    30 Mar 2008 | Online Presentations | Contributor(s): Manfred M. Kappes

    The talk presents results from ongoing projects in the field of carbon nanostructures: (i) Mass selected ion beam soft-landing has been used to generate exotic fullerene materials comprising...

    http://nanohub.org/resources/4206

  5. Boltzmann Transport Simulator for CNTs

    20 Feb 2008 | Tools | Contributor(s): Zlatan Aksamija, Umberto Ravaioli

    Simulate Electron transport in Single-walled carbon nanotubes using an upwinding discretization of the Boltzmann transport equation in the relaxation time approximation.

    http://nanohub.org/resources/cntbte

  6. Justin Koepke

    http://nanohub.org/members/27307

  7. The Novel Nanostructures of Carbon

    28 Feb 2008 | Online Presentations | 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...

    http://nanohub.org/resources/3997

  8. What Promises do Nanotubes and Nanowires Hold for Future Nanoelectronics Applications?

    18 Feb 2008 | Online Presentations | Contributor(s): Joerg Appenzeller

    Various low-dimensional materials are currently explored for future electronics applications. The common ground for all these structures is that the surface related impact can no longer be...

    http://nanohub.org/resources/4059

  9. Computational Nanoscience, Lecture 5: A Day of In-Class Simulation: MD of Carbon Nanostructures

    13 Feb 2008 | Teaching Materials | Contributor(s): Jeffrey C Grossman, Elif Ertekin

    In this lecture we carry out simulations in-class, with guidance from the instructors. We use the LAMMPS tool (within the nanoHUB simulation toolkit for this course). Examples include...

    http://nanohub.org/resources/4037

  10. Computational Nanoscience, Lecture 4: Geometry Optimization and Seeing What You're Doing

    13 Feb 2008 | Teaching Materials | Contributor(s): Jeffrey C Grossman, Elif Ertekin

    In this lecture, we discuss various methods for finding the ground state structure of a given system by minimizing its energy. Derivative and non-derivative methods are discussed, as well as the...

    http://nanohub.org/resources/4035

  11. Heat Transfer across Solid Contacts Enhanced with Nanomaterials

    11 Feb 2008 | Online Presentations | Contributor(s): Timothy S Fisher

    This presentation will describe thermal transport processes at solid-solid material interfaces. An overview of applications in the electronics industry will serve to motivate the subject, and then...

    http://nanohub.org/resources/3985

  12. Dynamics on the Nanoscale: Time-domain ab initio studies of quantum dots, carbon nanotubes and molecule-semiconductor interfaces

    31 Jan 2008 | Online Presentations | Contributor(s): Oleg Prezhdo

    Device miniaturization requires an understanding of the dynamical response of materials on the nanometer scale. A great deal of experimental and theoretical work has been devoted to characterizing...

    http://nanohub.org/resources/3951

  13. Crystal Viewer Tool

    22 Dec 2007 | Tools | Contributor(s): Saumitra Raj Mehrotra, Michael Povolotskyi, Sebastian Steiger, Tillmann Christoph Kubis, Abhijeet Paul, Xingshu Sun, Victoria Savikhin, Gerhard Klimeck

    Visualize different crystal lattices and planes

    http://nanohub.org/resources/crystal_viewer

  14. Excellence in Computer Simulation: Computational Materials

    20 Dec 2007 | Online Presentations | Contributor(s): Eric Schwegler

    This presentation was one of 13 presentations in the one-day forum, "Excellence in Computer Simulation," which brought together a broad set of experts to reflect on the future of...

    http://nanohub.org/resources/3721

  15. Nano Heatflow

    25 Sep 2007 | Tools | Contributor(s): Joe Ringgenberg, P. Alex Greaney, daniel richards, Jeffrey C Grossman, Jeffrey B. Neaton, Justin Riley

    Study the transfer of energy between the vibrational modes of a carbon nanotube.

    http://nanohub.org/resources/nanoheatflow

  16. New Dimension in Performance: Harnessing 3D Integration Technology

    29 Nov 2007 | Online Presentations | Contributor(s): Kerry Bernstein

    Despite generation on generation of scaling, computer chips have remained essentially 2-dimensional. Improvements in on-chip wire delay, and in the total number of inputs and outputs has not been...

    http://nanohub.org/resources/3596

  17. Oligodeoxyribonucleotide Association with Single-Walled Carbon Nanotubes

    02 Aug 2007 | Online Presentations | Contributor(s): Jennifer McDonald

    Commercially available single-walled carbon nanotubes (SWCNTs) tend to aggregate as ropes and bundles during production making them of little use in many scientific and industrial applications. An...

    http://nanohub.org/resources/3009

  18. The Effect of Physical Geometry on the Frequency Response of Carbon Nanotube Field-Effect Transistors

    03 Aug 2007 | Online Presentations | Contributor(s): Dave Lyzenga

    In order for carbon nanotube (CNT) electrical devices to be fabricated, it is necessary to obtain modifiable operation characteristics. Developing parametric equations to achieve this...

    http://nanohub.org/resources/3044

  19. Introduction to FETToy

    03 Jul 2007 | Learning Modules | Contributor(s): James K Fodor, Jing Guo

    This learning module introduces nanoHUB users to the FETToy simulator. A brief introduction to FETToy is presented, followed by voiced presentations featuring the simulator in action. Upon...

    http://nanohub.org/resources/2844

  20. Introduction to CNTbands

    28 Jun 2007 | Learning Modules | Contributor(s): James K Fodor, Jing Guo

    This learning module introduces nanoHUB users to the CNTbands simulator. A brief introduction to CNTbands is presented, followed by voiced presentations featuring the simulator in action. Upon...

    http://nanohub.org/resources/2843

nanoHUB.org, a resource for nanoscience and nanotechnology, is supported by the National Science Foundation and other funding agencies. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.