Wire Weapon

This character uses a monomolecular wire.

Monomolecular wire is a fictional wire, often used as a weapon, consisting of single strand of strongly-bonded molecules, like carbon nanotubes. It has applications in cutting objects and severing adjacent molecules. A similar or identical concept may be called a microfilament wire or, as a weapon, a microfilament whip.

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Monomolecular wires are seen in the Star Wars Expanded Universe, Cyber City Oedo 808, Hyperion Cantos, Robert J. Sawyer's Illegal Alien, the manga Battle Angel Alita, Naruto, Hellsing, My-Hime, Simon R. Green's Deathstalker series, as well as the roleplaying games Shadowrun, and Cyberpunk 2020.