Laser-assisted nanoscale deposition of diamond-like carbon films on tungsten tips

J. Shi, Yongfeng Lu, R. S. Cherukuri, K. K. Mendu, D. W. Doerr, Dennis R Alexander, L. P. Li, X. Y. Chen

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

A laser-assisted method was used to deposit diamond-like carbon (DLC) films on the apexes of tungsten tips under laser irradiation. The deposition process was found to be strongly dependent on tip sharpness. Simulation results indicated that an optically-enhanced region was formed at the apex region during laser irradiation. The enhancement factor dropped when the tip curvature radius was increased and aspect ratio was decreased. It was suggested that the two modes in the process of DLC deposition on nanotips under different laser fluences were like local apex DLC deposition under low laser fluences and phase-graded DLC deposition under high laser fluences.

Original languageEnglish (US)
Pages (from-to)1009-1011
Number of pages3
JournalApplied Physics Letters
Volume85
Issue number6
DOIs
StatePublished - Aug 9 2004

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tungsten
diamonds
carbon
lasers
fluence
apexes
irradiation
sharpness
aspect ratio
deposits
curvature
radii
augmentation
simulation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Laser-assisted nanoscale deposition of diamond-like carbon films on tungsten tips. / Shi, J.; Lu, Yongfeng; Cherukuri, R. S.; Mendu, K. K.; Doerr, D. W.; Alexander, Dennis R; Li, L. P.; Chen, X. Y.

In: Applied Physics Letters, Vol. 85, No. 6, 09.08.2004, p. 1009-1011.

Research output: Contribution to journalArticle

Shi, J, Lu, Y, Cherukuri, RS, Mendu, KK, Doerr, DW, Alexander, DR, Li, LP & Chen, XY 2004, 'Laser-assisted nanoscale deposition of diamond-like carbon films on tungsten tips', Applied Physics Letters, vol. 85, no. 6, pp. 1009-1011. https://doi.org/10.1063/1.1777816
Shi, J. ; Lu, Yongfeng ; Cherukuri, R. S. ; Mendu, K. K. ; Doerr, D. W. ; Alexander, Dennis R ; Li, L. P. ; Chen, X. Y. / Laser-assisted nanoscale deposition of diamond-like carbon films on tungsten tips. In: Applied Physics Letters. 2004 ; Vol. 85, No. 6. pp. 1009-1011.
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