Figure 1From: Enhanced field electron emission properties of hierarchically structured MWCNT-based cold cathodesTypical SEM images. (a) Pyramidal texturing of the Si (100) substrates after their KOH chemical treatment; (b) illustration of the PECVD grown MWCNTs on a silicon pyramid; (c) vertically aligned MWCNTs grown by PECVD onto untreated, flat Si (100) substrate.Back to article page