Carbon nanopipes and ductwork with nanometric walls and methods of making the same
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsJustin C Lytle, Trevor N. Zimmerman, Debra R Rolison
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Abstract
A carbon nanopipe comprising a durable graphitizable carbon wall of tunable thickness of about 10-500 nm formed by exposing a silica fiber network to a carbon precursor vapor and thereby depositing a carbon film onto the silica fiber network at a temperature suitable for complete pyrolysis of the carbon precursor and removing the silica fibers. The atmosphere of the step of depositing is controlled by a two-stage gas manifold wherein stage 1 purges the reaction chamber with pure argon and stage 2 introduces the carbon precursor.
Claims10
An array of carbon nanopipes comprising:
- a carbon nanopipe comprising a durable graphitizable carbon wall of thickness of about 10-500 nm formed by exposing a silica fiber network to a carbon precursor vapor and thereby depositing a carbon film onto the silica fiber network at a temperature suitable for complete pyrolysis of the carbon precursor and removing the silica fibers;
- further including an array or aperiodic ensemble of multiple said carbon nanopipes formed by deposition onto the fiber network;
- wherein the silica fibers are three-dimensionally interwoven fibers having diameters of about <1 μm;
- wherein the array of multiple carbon nanopipes comprises said carbon nanopipes that are three-dimensionally interwoven;
- wherein the carbon precursor is selected from the group consisting of benzene, naphthalene, and acetonitrile;
- and
- wherein said carbon nanopipes have an outer diameter >100 nm.
Dependencies are inferred from the claim text.