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Latest Quantum wire Stories

Microscopy Explores Nanowires' Weakest Link
2012-02-14 04:54:25

Individual atoms can make or break electronic properties in one of the world's smallest known conductors–quantum nanowires. Microscopic analysis at the Department of Energy's Oak Ridge National Laboratory is delivering a rare glimpse into how the atomic structure of the conducting nanowires affects their electronic behavior. The ORNL team's microscopy confirmed that deliberately introduced defects, which are only the size of a single atom, could turn a conducting nanowire into an...

2012-01-09 19:45:20

Rice University researchers tag excitons in search for hues' clues Rice University researchers have figured out what gives armchair nanotubes their unique bright colors: hydrogen-like objects called excitons. Their findings appear in the online edition of the Journal of the American Chemical Society. Armchair carbon nanotubes — so named for the "U"-shaped configuration of the atoms at their uncapped tips — are one-dimensional metals and have no band gap. This means...

Image 1 - Nanocables Light The Way To The Future
2011-09-07 10:31:42

  Rice researchers power line-voltage light bulb with nanotube wire Cables made of carbon nanotubes are inching toward electrical conductivities seen in metal wires, and that may light up interest among a range of industries, according to Rice University researchers. A Rice lab made such a cable from double-walled carbon nanotubes and powered a fluorescent light bulb at standard line voltage -- a true test of the novel material's ability to stake a claim in energy systems of the...

2011-08-03 19:34:30

DNA, a molecule famous for storing the genetic blueprints for all living things, can do other things as well. In a new paper,* researchers at the National Institute of Standards and Technology (NIST) describe how tailored single strands of DNA can be used to purify the highly desired "armchair" form of carbon nanotubes. Armchair-form single wall carbon nanotubes are needed to make "quantum wires" for low-loss, long distance electricity transmission and wiring. Single-wall carbon nanotubes are...

2010-07-15 02:50:39

Rice researchers' method untangles long tubes, clears hurdle toward armchair quantum wire Rice University scientists have found the "ultimate" solvent for all kinds of carbon nanotubes (CNTs), a breakthrough that brings the creation of a highly conductive quantum nanowire ever closer. Nanotubes have the frustrating habit of bundling, making them less useful than when they're separated in a solution. Rice scientists led by Matteo Pasquali, a professor in chemical and biomolecular engineering...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.