Carbon Nanotube Quantum Resistors | Zendy

Stefan Frank | Zendy; P. Poncharal | Zendy; Zhong Lin Wang | Zendy; Walt A. de Heer | Zendy

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Carbon Nanotube Quantum Resistors

Author(s) -

Stefan Frank,

P. Poncharal,

Zhong Lin Wang,

Walt A. de Heer

Publication year - 1998

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.280.5370.1744

Subject(s) - carbon nanotube , nanotube , materials science , conductance , nanotechnology , nanometre , fiber , ballistic conduction in single walled carbon nanotubes , electrical resistivity and conductivity , resistor , optical properties of carbon nanotubes , composite material , condensed matter physics , physics , voltage , quantum mechanics

The conductance of multiwalled carbon nanotubes (MWNTs) was found to be quantized. The experimental method involved measuring the conductance of nanotubes by replacing the tip of a scanning probe microscope with a nanotube fiber, which could be lowered into a liquid metal to establish a gentle electrical contact with a nanotube at the tip of the fiber. The conductance of arc-produced MWNTs is one unit of the conductance quantum G0 = 2e2/h = (12.9 kilohms)-1. The nanotubes conduct current ballistically and do not dissipate heat. The nanotubes, which are typically 15 nanometers wide and 4 micrometers long, are several orders of magnitude greater in size and stability than other typical room-temperature quantum conductors. Extremely high stable current densities, J > 10(7) amperes per square centimeter, have been attained.

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