Abstract
We compare the field emission characteristics of dense (10 9nanofibers/cm2), sparse (107nanofibers/cm 2), and patterned arrays (106nanofibers/cm2) of vertically aligned carbon nanofibers on silicon substrates. The carbon nanofibers were prepared using plasma-enhanced chemical vapor deposition of acetylene and ammonia gases in the presence of a nickel catalyst. We demonstrate how the density of carbon nanofibers can be varied by reducing the deposition yield through nickel interaction with a diffusion layer or by direct lithographic patterning of the nickel catalyst to precisely position each nanofiber. The patterned array of individual vertically aligned nanofibers had the most desirable field emission characteristics, highest apparent field enhancement factor, and emission site density.
| Original language | English |
|---|---|
| Pages (from-to) | 2011-2013 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 80 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Mar 18 2002 |
Fingerprint
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Field emission from dense, sparse, and patterned arrays of carbon nanofibers. / Teo, K. B K; Chhowalla, Manish; Amaratunga, G. A J; Milne, W. I.; Pirio, G.; Legagneux, P.; Wyczisk, F.; Pribat, D.; Hasko, D. G.
In: Applied Physics Letters, Vol. 80, No. 11, 18.03.2002, p. 2011-2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Field emission from dense, sparse, and patterned arrays of carbon nanofibers
AU - Teo, K. B K
AU - Chhowalla, Manish
AU - Amaratunga, G. A J
AU - Milne, W. I.
AU - Pirio, G.
AU - Legagneux, P.
AU - Wyczisk, F.
AU - Pribat, D.
AU - Hasko, D. G.
PY - 2002/3/18
Y1 - 2002/3/18
N2 - We compare the field emission characteristics of dense (10 9nanofibers/cm2), sparse (107nanofibers/cm 2), and patterned arrays (106nanofibers/cm2) of vertically aligned carbon nanofibers on silicon substrates. The carbon nanofibers were prepared using plasma-enhanced chemical vapor deposition of acetylene and ammonia gases in the presence of a nickel catalyst. We demonstrate how the density of carbon nanofibers can be varied by reducing the deposition yield through nickel interaction with a diffusion layer or by direct lithographic patterning of the nickel catalyst to precisely position each nanofiber. The patterned array of individual vertically aligned nanofibers had the most desirable field emission characteristics, highest apparent field enhancement factor, and emission site density.
AB - We compare the field emission characteristics of dense (10 9nanofibers/cm2), sparse (107nanofibers/cm 2), and patterned arrays (106nanofibers/cm2) of vertically aligned carbon nanofibers on silicon substrates. The carbon nanofibers were prepared using plasma-enhanced chemical vapor deposition of acetylene and ammonia gases in the presence of a nickel catalyst. We demonstrate how the density of carbon nanofibers can be varied by reducing the deposition yield through nickel interaction with a diffusion layer or by direct lithographic patterning of the nickel catalyst to precisely position each nanofiber. The patterned array of individual vertically aligned nanofibers had the most desirable field emission characteristics, highest apparent field enhancement factor, and emission site density.
UR - http://www.scopus.com/inward/record.url?scp=79956029524&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79956029524&partnerID=8YFLogxK
U2 - 10.1063/1.1461868
DO - 10.1063/1.1461868
M3 - Article
VL - 80
SP - 2011
EP - 2013
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 11
ER -