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Ballistic conduction is the characteristic of a material with crystalline properties, allowing electrons to flow through the material without collisions. The material must be free of impurities that the electrons will be capable of colliding with. The collisions cause the electrons to slow down, and cause the material to heat, effectively creating resistance in the material. Ballistic conduction differs from superconductivity due to the absence of the Meissner effect in the material.
Ballistic conduction occurs in some carbon nanotubes.