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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.
Nanotribology, Nanomechanics and Materials Characterization Studies
08 Jun 2009 | | Contributor(s):: Bharat Bhushan
Fundamental nanotribological studies provide insight to molecular origins of interfacial phenomena including adhesion, friction, wear and lubrication. Friction and wear of lightly loaded micro/nano components are highly dependent on the surface interactions (few atomic layers). Nanotribological...
Modern X-ray Scattering Methods for Nanoscale Materials Analysis
out of 5 stars
15 Oct 2008 | | Contributor(s):: Richard J. Matyi
Since its discovery by von Laue in 1912, X-ray diffraction has become an indispensable tool for structure determinations in the physical and biological sciences. X-rays are characterized by high energies and by wavelengths that are commensurate with nanometer-sized structures – unlike optical...
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.
BNC Research Review: Carbon Nanotubes as Nucleic Acid Carriers
04 Jun 2008 |
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.
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...
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...
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...
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...
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....
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...
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...
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.
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!...
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...
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...
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,...
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...
BNC Annual Research Symposium: Nanoelectronics and Semiconductor Devices
23 Apr 2007 | | Contributor(s):: David Janes
BNC Annual Research Symposium: Nanoscale Energy Conversion
23 Apr 2007 | | Contributor(s):: Timothy S Fisher
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.