Applied Physics Letters
Feedback | Help | Exit
Applied Physics Letters
Search:
   
 
 
 
Previous Article
Intrinsic stress development in Ti–C:H ceramic nanocomposite coatings
The development of intrinsic stresses within titanium-containing hydrocarbon (Ti–C:H) nanocomposite coatings was monitored during growth by in situ substrate curvature measurements using a multib...
Next Article
Triode field emitter with a gated planar carbon-nanoparticle cathode
We fabricated a triode field emitter with a normal gate structure and a planar cathode of carbon nanoparticles (CNPs), which consisted of good quality graphitic sheets encapsulating metal (carbide) co...

Generation of continuous and pulsed diagnostic imaging x-ray radiation using a carbon-nanotube-based field-emission cathode

Appl. Phys. Lett. 81, 355 (2002); doi:10.1063/1.1492305

Issue Date: 8 July 2002

You are not logged in to this journal. Log in

G. Z. Yue
Department of Physics, University of North Carolina, Chapel Hill, North Carolina 27599

Q. Qiu and Bo Gao
Applied Nanotechnologies, Inc., 308 West Rosemary Street, Chapel Hill, North Carolina 27516

Y. Cheng, J. Zhang, and H. Shimoda
Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599

S. Chang
Department of Radiation Oncology, School of Medicine, University of North Carolina, Chapel Hill, North Carolina 27599

J. P. Lu and O. Zhou
Department of Physics and Astronomy and Curriculum in Applied and Materials Sciences, University of North Carolina, Chapel Hill, North Carolina 27599
X-ray radiation is widely used in medical and industrial applications. The basic design of the x-ray tube has not changed significantly in the last century. In this paper, we demonstrate that medical diagnostic x-ray radiation can be generated using a carbon nanotube (CNT)-based field-emission cathode. The device can readily produce both continuous and pulsed x-rays with a programmable wave form and repetition rate. A total emission current of 28 mA was obtained from a 0.2 cm2 area CNT cathode. The x-ray intensity is sufficient to image a human extremity at 14 kVp and 180 mAs. Pulsed x-ray with a repetition rate greater than 100 kHz was readily achieved by programming the gate voltage. The CNT-based cold-cathode x-ray technology can potentially lead to portable and miniature x-ray sources for industrial and medical applications. ©2002 American Institute of Physics.
History: Received 12 April 2002; accepted 15 May 2002
Permalink: http://link.aip.org/link/?APPLAB/81/355/1
BUY THIS ARTICLE   (US$24)
Download HTML Download Sectioned HTML Download PDF (126 kB) View Cart

KEYWORDS and PACS

Keywords
PACS
  • 87.59.Bh
    Biological and medical physics X-ray imaging X-ray radiography
  • 85.45.-w
    Electronic and magnetic devices; microelectronics Vacuum microelectronics
  • 85.35.Kt
    Electronic and magnetic devices; microelectronics Nanoelectronic devices Nanotube devices
  • YEAR: 2002

RELATED DATABASES


To view database links for this article,
you need to log in.
To view database links for this article,
you need to log in.

PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (14)
View in Separate Window/Tab
For access to fully linked references, you need to log in. For access to fully linked references, you need to Log in.
  1. S. C. Bushong, Radiologic Science for Technologist (Mosby, St. Louis, 1997).
  2. I. Brodie and C. A. Spindt, Adv. Electron. Electron Phys. 83, 1 106 (1992).
  3. Vacuum Micro-electronics, edited by W. Zhu (Wiley, New York, 2001).
  4. R. R. Whitlock, M. I. Bell, D. V. Kerns, S. Kerns, J. L. Davidson, and W. P. Kang, US Patent No. 6,333,968 (2001).
  5. R. Baptist, US Patent No. 6,259,765 (2001).
  6. P. Rangstein, C. Ribbing, C. Strandman, R. Hok, and L. Smith, Sens. Actuators 82, 24 (2000).
  7. H. Sugie, M. Tanemura, V. Filip, K. Iwata, K. Takahashi, and F. Okuyama, Appl. Phys. Lett. 78, 2578 (2001).
  8. K. A. Dean and B. R. Chalamala, Appl. Phys. Lett. 76, 375 (2000).
  9. G. Z. Yue, B. Gao, Y. Cheng, J. Zhang, H. Shimoda, and O. Zhou (unpublished).
  10. B. Gao, G. Z. Yue, Q. Qiu, Y. Cheng, H. Shimoda, L. Fleming, and O. Zhou, Adv. Mater. 13, 1770 (2001).
  11. A. Thess, R. Lee, P. Nikdaev, H. Dai, P. Petit, J. Robert, C. Xu, Y. H. Lee, S. G. Kim, A. G. Rinzler, D. T. Colbert, G. E. Scuseria, D. Tomanek, J. E. Fischer, and R. E. Smalley, Science 273, 483 (1996).
  12. X. P. Tang, A. Kleinhammes, H. Shimoda, L. Fleming, C. Bower, S. Sinha, O. Zhou, and Y. Wu, Science 228, 492 (2000).
  13. C. Bower, O. Zhou, and W. Zhu, US Patent No. 6,277,318 (2001).
  14. W. Zhu, C. Bower, O. Zhou, G. P. Kochanski, and S. Jin, Appl. Phys. Lett. 75, 873 (1999).

CITING ARTICLES
For access to citing articles, you need to log in.
For access to citing articles, you need to Log in.


Copyright © American Institute of Physics