Fig. 2
From: RETRACTED ARTICLE: Flexible Field Emitter for X-ray Generation by Implanting CNTs into Nickel Foil

a Variation of the CNT distribution as a function of milling time. b Raman spectra of the milled CNTs
From: RETRACTED ARTICLE: Flexible Field Emitter for X-ray Generation by Implanting CNTs into Nickel Foil
a Variation of the CNT distribution as a function of milling time. b Raman spectra of the milled CNTs