Figure 6.

XPS C1sspectra. (a) Un-irradiated, (b) after 0.5 keV Ar+ ion irradiation, (c) after 4 keV Ar+ ion irradiation energy.

Al-Harthi et al. Nanoscale Research Letters 2012 7:466   doi:10.1186/1556-276X-7-466
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