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

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

School of Engineering, Materials Science & Engineering

Research output: Contribution to journal › Article › peer-review

93 Scopus citations

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 language	English (US)
Article number	155504
Pages (from-to)	155504/1-155504/4
Journal	Physical review letters
Volume	90
Issue number	15
State	Published - Apr 18 2003

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Cite this

@article{3179e9c569564f29a0a7ecbee5ff22b2,

title = "Carbon onions: Carriers of the 217.5 nm interstellar absorption feature",

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.",

author = "Manish Chhowalla and H. Wang and N. Sano and Teo, {K. B.K.} and Lee, {S. B.} and Amaratunga, {G. A.J.}",

note = "Funding Information: We thank Dr. Daping Chu for help with AFM measurements. We thank Dr. Satoshi Tomita for getting us interested in absorption from onions. M. C. acknowledges support from the Royal Academy of Engineering, U.K.",

year = "2003",

month = apr,

day = "18",

language = "English (US)",

volume = "90",

pages = "155504/1--155504/4",

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TY - JOUR

T1 - Carbon onions

T2 - Carriers of the 217.5 nm interstellar absorption feature

AU - Chhowalla, Manish

AU - Wang, H.

AU - Sano, N.

AU - Teo, K. B.K.

AU - Lee, S. B.

AU - Amaratunga, G. A.J.

N1 - Funding Information: We thank Dr. Daping Chu for help with AFM measurements. We thank Dr. Satoshi Tomita for getting us interested in absorption from onions. M. C. acknowledges support from the Royal Academy of Engineering, U.K.

PY - 2003/4/18

Y1 - 2003/4/18

N2 - 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.

AB - 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.

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AN - SCOPUS:0038201916

SN - 0031-9007

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ER -

Carbon onions: Carriers of the 217.5 nm interstellar absorption feature

Abstract

All Science Journal Classification (ASJC) codes

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