Figure 2From: Defect-related hysteresis in nanotube-based nano-electromechanical systems Pairs of carbon interstitials in a (9,0)@(18,0) double-wall carbon nanotube. (a) Inter-tube bridge (arrows point to C interstitials), (b) hillock on the inner (9,0) tube (the atoms and bonds of the outer shell are shown in a wire frame).Back to article page