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Cylindrical macromolecule and photometer and magnetometer using the same

  • US 5,933,791 A
  • Filed: 06/25/1996
  • Issued: 08/03/1999
  • Est. Priority Date: 02/06/1992
  • Status: Expired due to Term
First Claim
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1. A property estimation method of a cylindrical nanotube, comprising the steps of:

  • confirming that the nanotube has a structure of A(n1, n2) <

    (add if necessary besides the description in the specification)!, where A(n1, n2) is a notation representative of a cylindrical structure geometrically obtainable from a planar graphite layer consisting of a repeated hexagon having a carbon atom at each vertex thereof and a covalent bond along each side thereof, by rolling up the graphite layer so that an identified hexagon by a position vector n1 a+n2 b with respect to a reference hexagon in the graphite layer is superimposed on the reference hexagon in the cylindrical structure, where a is a unit displacement vector of the reference hexagon in a perpendicular direction to an arbitrary side of the reference hexagon, b is a unit displacement vector of the reference hexagon in a perpendicular direction to a second side from the arbitrary side of the reference hexagon, and n1 and n2 are integers >

    !;

    confirming that the structure meets a condition of n1 -2n2 =0; and

    estimating that the nanotube has a metallic property.

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