H+, N+, and Ar+ ion irradiation induced structure changes of carbon nanostructures

A. Ishaq, Shahid Iqbal, Naveed Ali, A. A. Khurram, Ali Umar Akrajas, Chang Fu Dee, Shahzad Naseem, H. M. Rafique, Yan Long

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The effects of H+, N+, and Ar+ ion irradiation on structural changes in multi-walled carbon nanotubes (MWCNTs) and amorphous carbon nanowires (a-CNWs) were investigated at room and elevated temperatures with different irradiation doses. It is found that at room temperature, defects were introduced in MWCNTs under 70 keV N+ ion beam irradiation at a low dose of 1×1016 ions/cm2 while MWCNTs transformed into a-CNWs at a high dose of 7×1016 ions/cm2. At 1 000 K, the 70 keV N+ ion beam irradiation of defective MWCNTs causes the curling of carbon clusters to an onion-like structure at a dose of 4×1016 ions/cm2 and the formation of a low density onion-like structure at 7×1016 ions/cm2. Irradiation of the defective MWCNTs by 70 keV Ar+ ion at 1 000 K and 7×1016 ions/cm2 leads to the formation of a high density onion-like structure. Irradiation of a-CNWs with 70 keV H+ ion at 1 000 K gradually increases the fraction of material with a diamond structure with increasing dose from 1×1016 to 1×1017 ions/cm2.

Original languageEnglish
Pages (from-to)81-87
Number of pages7
JournalXinxing Tan Cailiao/New Carbon Materials
Volume28
Issue number2
DOIs
Publication statusPublished - Apr 2013

Fingerprint

Ion bombardment
Nanostructures
Carbon
Carbon Nanotubes
Ions
Carbon nanotubes
Irradiation
Amorphous carbon
Nanowires
Ion beams
Dosimetry
Carbon clusters
Diamond
Diamonds
Temperature
Defects

Keywords

  • A-CNWs
  • Carbon onion
  • Ion irradiation
  • MWCNTs
  • Phase transformation

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

H+, N+, and Ar+ ion irradiation induced structure changes of carbon nanostructures. / Ishaq, A.; Iqbal, Shahid; Ali, Naveed; Khurram, A. A.; Akrajas, Ali Umar; Dee, Chang Fu; Naseem, Shahzad; Rafique, H. M.; Long, Yan.

In: Xinxing Tan Cailiao/New Carbon Materials, Vol. 28, No. 2, 04.2013, p. 81-87.

Research output: Contribution to journalArticle

Ishaq, A. ; Iqbal, Shahid ; Ali, Naveed ; Khurram, A. A. ; Akrajas, Ali Umar ; Dee, Chang Fu ; Naseem, Shahzad ; Rafique, H. M. ; Long, Yan. / H+, N+, and Ar+ ion irradiation induced structure changes of carbon nanostructures. In: Xinxing Tan Cailiao/New Carbon Materials. 2013 ; Vol. 28, No. 2. pp. 81-87.
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