High temperature superconducting cabon nanotubes and methods for making them
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United States of America Patent
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Issued Date -
Jul 1, 2004
app pub date -
Aug 7, 2003
filing date -
Aug 7, 2002
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Abandoned
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Abstract
Disclosed are high temperature and/or room temperature superconducting carbon nanotube compositions having either a critical doping range, a critical chirality or a mixture thereof, high temperature superconducting graphite compositions having a critical doping range, methods of achieving a phase-coherent, near zero resistivity superconducting state in multiwalled carbon nanotubes and bundles of superconducting carbon nanotubes, methods of achieving a large positive magnetoresistance in bundles of superconducting carbon nanotubes, and methods for making and using such nanotubes or bundles. Disclosed also are devices and apparatuses (e.g., magnetic reading heads, magnetic switch devices, magnetic imaging devices, and superconducting quantum interference devices) comprising superconducting carbon nanotubes and/or bundles of superconducting carbon nanotubes.
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