Carbon Nanotube Based Electron Field Emission Cathodes for Traveling Wave Tubes

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$749,354.00
Award Year:
2006
Program:
SBIR
Phase:
Phase II
Contract:
FA9451-06-C-0024
Award Id:
72736
Agency Tracking Number:
F051-001-2962
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
204 Glenhill Lane, Chapel Hill, NC, 27514
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
017945192
Principal Investigator:
BoGao
Senior Scientist
(919) 423-1832
bgao@xintek.com
Business Contact:
ShanBai
CEO
(919) 313-9638
sbai@xintek.com
Research Institute:
n/a
Abstract
We propose in this project to develop carbon nanotubes (CNTs) based field emission cathodes with high current density and long lifetime in pulsed and continuous beam operation for traveling wave tube applications. In phase I, we have successfully demonstrated high current density (>1 A/cm2) from our diode and triode CNT cathodes. In phase II, we will concentrate on improving our cathode design to enhance the cathode efficiency and lifetime in actual TWT environments. Meanwhile, we will continue working on our CNT materials to optimize their structures, such as diameter and lengths. Low work function materials are always attractive for making electron sources. In phase II, we propose to reduce the work function of CNTs by chemical doping. We will also try to produce other low work function nanomaterials. The field emission properties of these low work function nanomaterials will be investigated and the feasibility of using these materials for field emission cathodes will be assessed.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government