Laser ablation for the synthesis of carbon nanotubes
Abstract
Single walled carbon nanotubes are produced in a novel apparatus by the laser-induced ablation of moving carbon target. The laser used is of high average power and ultra-fast pulsing. According to various preferred embodiments, the laser produces and output above about 50 watts/cm.sup.2 at a repetition rate above about 15 MHz and exhibits a pulse duration below about 10 picoseconds. The carbon, carbon/catalyst target and the laser beam are moved relative to one another and a focused flow of "side pumped", preheated inert gas is introduced near the point of ablation to minimize or eliminate interference by the ablated plume by removal of the plume and introduction of new target area for incidence with the laser beam. When the target is moved relative to the laser beam, rotational or translational movement may be imparted thereto, but rotation of the target is preferred.
- Inventors:
- Issue Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1080305
- Patent Number(s):
- 8317983
- Application Number:
- 12/798,377
- Assignee:
- Jefferson Science Associates, LLC (Newport News, VA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
- DOE Contract Number:
- AC05-84ER40150
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 77 NANOSCIENCE AND NANOTECHNOLOGY
Citation Formats
Holloway, Brian C, Eklund, Peter C, Smith, Michael W, Jordan, Kevin C, and Shinn, Michelle. Laser ablation for the synthesis of carbon nanotubes. United States: N. p., 2012.
Web.
Holloway, Brian C, Eklund, Peter C, Smith, Michael W, Jordan, Kevin C, & Shinn, Michelle. Laser ablation for the synthesis of carbon nanotubes. United States.
Holloway, Brian C, Eklund, Peter C, Smith, Michael W, Jordan, Kevin C, and Shinn, Michelle. Tue .
"Laser ablation for the synthesis of carbon nanotubes". United States. https://www.osti.gov/servlets/purl/1080305.
@article{osti_1080305,
title = {Laser ablation for the synthesis of carbon nanotubes},
author = {Holloway, Brian C and Eklund, Peter C and Smith, Michael W and Jordan, Kevin C and Shinn, Michelle},
abstractNote = {Single walled carbon nanotubes are produced in a novel apparatus by the laser-induced ablation of moving carbon target. The laser used is of high average power and ultra-fast pulsing. According to various preferred embodiments, the laser produces and output above about 50 watts/cm.sup.2 at a repetition rate above about 15 MHz and exhibits a pulse duration below about 10 picoseconds. The carbon, carbon/catalyst target and the laser beam are moved relative to one another and a focused flow of "side pumped", preheated inert gas is introduced near the point of ablation to minimize or eliminate interference by the ablated plume by removal of the plume and introduction of new target area for incidence with the laser beam. When the target is moved relative to the laser beam, rotational or translational movement may be imparted thereto, but rotation of the target is preferred.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 27 00:00:00 EST 2012},
month = {Tue Nov 27 00:00:00 EST 2012}
}
Works referenced in this record:
Production of high-density single-walled nanotube material by a simple laser-ablation method
journal, August 1998
- Maser, W. K.; Muñoz, E.; Benito, A. M.
- Chemical Physics Letters, Vol. 292, Issue 4-6
Time period for the growth of single-wall carbon nanotubes in the laser ablation process: evidence from gas dynamic studies and time resolved imaging
journal, December 2000
- Sen, Rahul; Ohtsuka, Y.; Ishigaki, T.
- Chemical Physics Letters, Vol. 332, Issue 5-6
Large-Scale Production of Single-Walled Carbon Nanotubes Using Ultrafast Pulses from a Free Electron Laser
journal, June 2002
- Eklund, P. C.; Pradhan, B. K.; Kim, U. J.
- Nano Letters, Vol. 2, Issue 6
Growth mechanisms for single-wall carbon nanotubes in a laser-ablation process
journal, May 2001
- Scott, C. D.; Arepalli, S.; Nikolaev, P.
- Applied Physics A Materials Science & Processing, Vol. 72, Issue 5