Carbon onions

Carriers of the 217.5 nm interstellar absorption feature

Manish Chhowalla, H. Wang, N. Sano, K. B K Teo, S. B. Lee, G. A J Amaratunga

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

The UV-VIS characteristics of carbon ions fabricated by an arch discharge in water or liquid nitrogen show characteristics that are similar to the interstellar absorption feature. Thus, high purity and well separated carbon onion samples prepared by annealing the as-fabricated powder in air at 600°C for 60 showed a constant absorption peak at 4.6 μm-1 with a variable width ranging from 1.2-1.6 μm-1. In addition to the UV-VIS data, the origin of the absorption feature at 4.6 μm-1 in carbon onions can be attributed to the collective excitations of π plasmons.

Original languageEnglish
JournalPhysical Review Letters
Volume90
Issue number15
Publication statusPublished - Apr 18 2003

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carbon
arches
plasmons
liquid nitrogen
purity
nitrogen
annealing
air
water
excitation
ions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Chhowalla, M., Wang, H., Sano, N., Teo, K. B. K., Lee, S. B., & Amaratunga, G. A. J. (2003). Carbon onions: Carriers of the 217.5 nm interstellar absorption feature. Physical Review Letters, 90(15).

Carbon onions : Carriers of the 217.5 nm interstellar absorption feature. / Chhowalla, Manish; Wang, H.; Sano, N.; Teo, K. B K; Lee, S. B.; Amaratunga, G. A J.

In: Physical Review Letters, Vol. 90, No. 15, 18.04.2003.

Research output: Contribution to journalArticle

Chhowalla, M, Wang, H, Sano, N, Teo, KBK, Lee, SB & Amaratunga, GAJ 2003, 'Carbon onions: Carriers of the 217.5 nm interstellar absorption feature', Physical Review Letters, vol. 90, no. 15.
Chhowalla M, Wang H, Sano N, Teo KBK, Lee SB, Amaratunga GAJ. Carbon onions: Carriers of the 217.5 nm interstellar absorption feature. Physical Review Letters. 2003 Apr 18;90(15).
Chhowalla, Manish ; Wang, H. ; Sano, N. ; Teo, K. B K ; Lee, S. B. ; Amaratunga, G. A J. / Carbon onions : Carriers of the 217.5 nm interstellar absorption feature. In: Physical Review Letters. 2003 ; Vol. 90, No. 15.
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