TITLE

Template-based carbon nanotubes and their application to a field emitter

AUTHOR(S)
Jeong, Soo-Hwan; Hwang, Hee-Young; Lee, Kun-Hong; Jeong, Yongsoo
PUB. DATE
April 2001
SOURCE
Applied Physics Letters;4/2/2001, Vol. 78 Issue 14, p2052
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Anodic aluminum oxide (AAO) templates were fabricated by anodizing Al films. After the Co catalyst had been electrochemically deposited into the bottom of the AAO template, carbon nanotubes (CNTs) were grown by the catalytic pyrolysis of C[sub 2]H[sub 2] at 650 °C. Overgrowth of CNTs on the AAO templates was observed. The diameter of the CNTs strongly depends on the size of the pores in the AAO template. The electron field emission measurements on the samples showed a turn-on field of 1.9-2.1 V/μm and a field enhancement factor of 3360-5200. Our observation concerning the low turn-on field and high field enhancement factors is explained in terms of a low field screening effect. © 2001 American Institute of Physics.
ACCESSION #
4710174

 

Related Articles

  • Transfer of nanoporous pattern of anodic porous alumina into Si substrate. Asoh, Hidetaka; Matsuo, Mamoru; Yoshihama, Megumi; Ono, Sachiko // Applied Physics Letters;11/24/2003, Vol. 83 Issue 21, p4408 

    Nanohole arrays in a Si substrate with a self-ordered configuration having a 100 nm hole periodicity were fabricated by the pattern transfer of the hole configuration of anodic porous alumina. The self-ordered anodic porous alumina used as a mask was directly prepared by anodizing an aluminum...

  • Small quantum-sized CdS particles assembled to form a regularly nanostructured porous film. Hoyer, Patrick; Baba, Nobuyoshi // Applied Physics Letters;5/15/1995, Vol. 66 Issue 20, p2700 

    Examines the small quantum-sized cadmium sulfide particles assembled to form a regularly nanostructured porous film. Use of porous anodic alumina as template; Diameter of the holes of the regular porous structure; Size of the quantized crystalline particles.

  • Highly ordered nanochannel-array architecture in anodic alumina. Masuda, Hideki; Yamada, Haruki // Applied Physics Letters;11/10/1997, Vol. 71 Issue 19, p2770 

    Develops a highly ordered nanochannel-array architecture in anodic alumina. Magnitude of the channel density; Use of the long-range-ordered channel array as a powerful tool in the development of nanodevices; Replication of air-hole array architectures with high-refractive-index materials.

  • Structural change at the carbon-nanotube tip by field emission. Kuzumaki, Toru; Takamura, Yuzuru; Ichinose, Hideki; Horiike, Yasuhiro // Applied Physics Letters;6/4/2001, Vol. 78 Issue 23, p3699 

    Carbon-nanotube tips are plastically deformed during field emission. High-resolution transmission electron microscopy and structural simulations suggest that the deformed structure of the closed nanotube is explained by heterogeneous nucleation of the pentagonal and heptagonal carbon ring pairs,...

  • Influence of cluster-assembly parameters on the field emission properties of nanostructured carbon films. Ducati, C.; Barborini, E.; Piseri, P.; Milani, P.; Robertson, J. // Journal of Applied Physics;11/1/2002, Vol. 92 Issue 9, p5482 

    Supersonic cluster beam deposition has been used to produce films with different nanostructures by controlling the deposition parameters such as the film thickness, substrate temperature and cluster mass distribution. The field emission properties of cluster-assembled carbon films have been...

  • Microchannel plate for high-efficiency field emission display. Yi, Whikun; Whikun Yi; Jin, Sunghwan; Sunghwan Jin; Jeong, Taewon; Taewon Jeong; Lee, Jeonghee; Jeonghee Lee; Yu, SeGi; SeGi Yu; Choi, Yongsoo; Yongsoo Choi; Kim, J. M. // Applied Physics Letters;9/11/2000, Vol. 77 Issue 11 

    The efficiency of a field emission display was improved significantly with a newly developed microchannel plate. The key features of this unit and its fabrication are summarized as follows: (a) bulk alumina is used as a substrate material, (b) channel location is defined by a programed-hole...

  • Nanometer-scale modification of biological membranes by field emission scanning tunneling.... Garcia, Ricardo // Applied Physics Letters;2/28/1994, Vol. 64 Issue 9, p1162 

    Examines the nanometer-scale modification of semiconductor and metallic samples by field emission scanning microscopy. Methods for the fabrication of nanometer-scale structures and devices; Parameters controlling the tip-membrane distance; Degree of precision and potential of the method for...

  • Growth and control of nanoprotrusions on iridium field emitters. Chalamala, Babu R.; Reuss, Robert H.; Dean, Kenneth A. // Applied Physics Letters;4/16/2001, Vol. 78 Issue 16, p2375 

    We report on the direct observation of the growth of nanoprotrusions on iridium field-emission tips. For clean, protrusion-free field emitters, the field emission originated from crystal planes with low-work-function values. However, with continuous operation, we observed the growth of...

  • Field emission from dense, sparse, and patterned arrays of carbon nanofibers. Teo, K. B. K.; Chhowalla, M.; Amaratunga, G. A. J.; Milne, W. I.; Pirio, G.; Legagneux, P.; Wyczisk, F.; Pribat, D.; Hasko, D. G. // Applied Physics Letters;3/18/2002, Vol. 80 Issue 11, p2011 

    We compare the field emission characteristics of dense (10[sup 9]nanofibers/cm²), sparse (10[sup 7] nanofibers/cm²), and patterned arrays (10[sup 6] nanofibers/cm²) of vertically aligned carbon nanofibers on silicon substrates. The carbon nanofibers were prepared using plasma-enhanced...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics