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. 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....

  2. 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...

  3. 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...

  4. 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...

  5. 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...

  6. Crystal Viewer Tool

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

    Visualize different crystal lattices and planes

  7. 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.

  8. 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.

  9. 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!...

  10. Oligodeoxyribonucleotide Association with Single-Walled Carbon Nanotubes

    02 Aug 2007 | | 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 effective technique for dispersing and solubilizing SWCNTs is required to fully utilize their...

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

    03 Aug 2007 | | 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 controllability in the vertical field-effect transistor (FET) design is an important first step toward...

  12. Introduction to FETToy

    03 Jul 2007 | | 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 completion of this module, users should be able to use this simulator to gain valuable insight into the...

  13. Introduction to CNTbands

    28 Jun 2007 | | 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 completion of this module, users should be able to use this simulator to gain valuable insight into the...

  14. 3D Molecular Models

    21 Jun 2007 | | Contributor(s):: Nicholas Vargo

    This animation was created as part of the Children's Museum Nanotechnology Exhibit to give the viewer an idea of what objects look like at the nano-level. The molecules range from something as small as caffeine to major proteins and viruses.Nicholas Vargo created this kiosk presentation as an...

  15. Bandstructure of Carbon Nanotubes and Nanoribbons

    14 Jun 2007 | | Contributor(s):: James K Fodor, Seokmin Hong, Jing Guo

    This learning module introduces users to the Carbon-Nano Bands simulation tool, which simulates the bandstructure of Carbon Nanotubes (CNTs) and Nanoribbons (CNRs). To gives users a strong background in bandstructure, the module starts with sections that introduce bandstructure basics. To this...

  16. From Research to Learning in Chemistry through Visualization and Computation

    17 May 2007 | | Contributor(s):: Eric Jakobsson

    Modern chemistry research and high school chemistry education are separated by institutional and geographical boundaries. As such, much of secondary chemistry education is still based on the periodic table instead of the computational methods that drive current chemistry research. In this talk,...

  17. Electron Emission from Nanoscale Carbon Materials

    15 May 2007 | | Contributor(s):: Timothy S Fisher

    Prior studies on electron emission show possibly beneficial effects ofnanoscale phenomena on energy-conversion characteristics. For example,recent work has shown that the electric field around a nanoscale fieldemission device can increase the average energy of emitted electrons. Weconsider here...

  18. BNC Annual Research Symposium: Nanoelectronics and Semiconductor Devices

    23 Apr 2007 | | Contributor(s):: David Janes

    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.

  19. BNC Annual Research Symposium: Nanoscale Energy Conversion

    23 Apr 2007 | | Contributor(s):: Timothy S Fisher

    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.

  20. Atomistic Modeling of the Mechanical Properties of Nanostructured Materials

    16 Apr 2007 | | Contributor(s):: SeongJun Heo, Susan Sinnott

    The mechanical properties of carbon nanotubes are studied by using classical molecular dynamics simulations. Especially, the effects of filling, temperature, and functionalization on CNT's tensional and twisting properties are considered in this study.