Metallic carbon materials
Abstract
Novel metallic forms of planar carbon are described, as well as methods of designing and making them. Nonhexagonal arrangements of carbon are introduced into a graphite carbon network essentially without destroying the planar structure. Specifically a form of carbon comprising primarily pentagons and heptagons, and having a large density of states at the Fermi level is described. Other arrangements of pentagons and heptagons that include some hexagons, and structures incorporating squares and octagons are additionally disclosed. Reducing the bond angle symmetry associated with a hexagonal arrangement of carbons increases the likelihood that the carbon material will have a metallic electron structure.
- Inventors:
-
- Berkeley, CA
- Darien, IL
- Kensington, CA
- Issue Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- OSTI Identifier:
- 872702
- Patent Number(s):
- 5993697
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01B - CABLES
- DOE Contract Number:
- AC03-76SF00098
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- metallic; carbon; materials; novel; forms; planar; described; methods; designing; nonhexagonal; arrangements; introduced; graphite; network; essentially; destroying; structure; specifically; form; comprising; primarily; pentagons; heptagons; density; fermi; level; hexagons; structures; incorporating; squares; octagons; additionally; disclosed; reducing; bond; angle; symmetry; associated; hexagonal; arrangement; carbons; increases; likelihood; material; electron; carbon materials; carbon material; hexagonal arrangement; metallic forms; fermi level; graphite carbon; /252/423/
Citation Formats
Cohen, Marvin Lou, Crespi, Vincent Henry, Louie, Steven Gwon Sheng, and Zettl, Alexander Karlwalter. Metallic carbon materials. United States: N. p., 1999.
Web.
Cohen, Marvin Lou, Crespi, Vincent Henry, Louie, Steven Gwon Sheng, & Zettl, Alexander Karlwalter. Metallic carbon materials. United States.
Cohen, Marvin Lou, Crespi, Vincent Henry, Louie, Steven Gwon Sheng, and Zettl, Alexander Karlwalter. Fri .
"Metallic carbon materials". United States. https://www.osti.gov/servlets/purl/872702.
@article{osti_872702,
title = {Metallic carbon materials},
author = {Cohen, Marvin Lou and Crespi, Vincent Henry and Louie, Steven Gwon Sheng and Zettl, Alexander Karlwalter},
abstractNote = {Novel metallic forms of planar carbon are described, as well as methods of designing and making them. Nonhexagonal arrangements of carbon are introduced into a graphite carbon network essentially without destroying the planar structure. Specifically a form of carbon comprising primarily pentagons and heptagons, and having a large density of states at the Fermi level is described. Other arrangements of pentagons and heptagons that include some hexagons, and structures incorporating squares and octagons are additionally disclosed. Reducing the bond angle symmetry associated with a hexagonal arrangement of carbons increases the likelihood that the carbon material will have a metallic electron structure.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Distribution of pentagons and shapes in carbon nano-tubes and nano-particles
journal, January 1993
- Ajayan, P. M.; Ichihashi, T.; Iijima, S.
- Chemical Physics Letters, Vol. 202, Issue 5
Growth of carbon nanotubes
journal, April 1993
- Iijima, Sumio
- Materials Science and Engineering: B, Vol. 19, Issue 1-2