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.

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  1. CNT Heterojunction Modeler

    20 Mar 2008 | | Contributor(s):: Joe Ringgenberg, Joydeep Bhattacharjee, Jeffrey B. Neaton, Jeffrey C Grossman

    Study the structure and electronic properties of carbon nanotubes with linear heterojunctions.

  2. BNC Research Review: Carbon Nanotubes as Nucleic Acid Carriers

    04 Jun 2008 | | Contributor(s):: Don Bergstrom

    This presentation is part of a collection of presentations describing the projects, people, and capabilities enhanced by research performed in the Birck Center, and a look at plans for the upcoming year.

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

    Q&A|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...

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

  4. 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...

  5. Quang Nguyen

    https://nanohub.org/members/28087

  6. Carbon Nanotechnology: Scientific and Technological Issues

    24 Feb 2008 | | 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 applications ranging from chemical sensing to post-silicon nanoelectronics. A common thread is the need to atomistically...

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

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

    The talk presents results from ongoing projects in the field of carbonnanostructures: (i) Mass selected ion beam soft-landing has been usedto generate exotic fullerene materials comprising covalent linked,non-IPR cages. Apart from microscopic structure, we have studiedthermal and electronic...

  8. Boltzmann Transport Simulator for CNTs

    20 Feb 2008 | | 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.

  9. Venkata karthik Nagareddy

    PhD at Newcastle University, UK

    https://nanohub.org/members/27460

  10. Justin Koepke

    https://nanohub.org/members/27307

  11. 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...

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

    18 Feb 2008 | | 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 ignored – the common approach applied to predict properties of bulk-type three-dimensional (3D) materials....

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

    13 Feb 2008 | | 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 calculating the energy per atom of different fullerenes and nantubes, computing the Young's modulus of a nanotube...

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

    13 Feb 2008 | | 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 importance of the starting guess and how to find or generate good initial structures. We also briefly...

  15. Heat Transfer across Solid Contacts Enhanced with Nanomaterials

    11 Feb 2008 | | 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 the basic diffusive constriction theory will be developed. The addition of carbon nanotube arrays to...

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

    31 Jan 2008 | | 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 the excitation, charge, spin, and vibrational dynamics in a variety of novel materials, including...

  17. Crystal Viewer Tool

    22 Dec 2007 | | Contributor(s):: Yuanchen Chu, Daniel F Mejia, Fan Chen, James Fonseca, Michael Povolotskyi, Gerhard Klimeck

    Visualize different crystal lattices and planes

  18. Excellence in Computer Simulation: Computational Materials

    20 Dec 2007 | | 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 computational science and engineering.

  19. Nano Heatflow

    25 Sep 2007 | | 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.

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

    29 Nov 2007 | | 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 able to keep up with improvements to the transistor, and its getting harder and harder to hide it! 3D...