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Carbon nanotube-based nonvolatile random access memory for molecular computing

Rueckes1, Kim, Joselevich

  • 1Department of Chemistry and Chemical Biology, Division of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.

Science (New York, N.Y.)
|July 7, 2000
PubMed
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Researchers developed molecular electronics using carbon nanotubes for high-density, high-speed nonvolatile memory. A novel suspended, crossed nanotube design creates bistable ON/OFF states for reversible bit storage.

Area of Science:

  • Molecular electronics
  • Nanotechnology
  • Materials science

Background:

  • Molecular electronics offers a path towards ultra-high-density information storage.
  • Carbon nanotubes possess unique electrical properties suitable for nanoscale devices.

Purpose of the Study:

  • To develop a concept for molecular electronics utilizing carbon nanotubes as both device elements and interconnects.
  • To demonstrate the feasibility of carbon nanotube-based bistable memory elements.

Main Methods:

  • Theoretical calculations to model device behavior.
  • Experimental fabrication and characterization of a suspended, crossed nanotube device.
  • Demonstration of reversible, bistable ON/OFF states.

Main Results:

Related Experiment Videos

  • A device concept employing suspended, crossed carbon nanotubes was developed.
  • Bistable, electrostatically switchable ON/OFF states were achieved.
  • A reversible, bistable nanotube-based bit was experimentally realized.

Conclusions:

  • Carbon nanotubes can serve as both active elements and wires in molecular electronic devices.
  • The proposed design enables nonvolatile random access memory with ultra-high integration density (10^12 cm^-2).
  • Operation frequencies exceeding 100 GHz are achievable, paving the way for next-generation computing.