Controlled cutting of singlewalled carbon nanotubes and low ...
The SWCNT sample was first ground with a WigLBug grinding mill for 30 min or 1 h to introduce structural defects into the side walls of SWCNT. Because the ball pestle of the WigLBug grinding mill randomly hits different spots on the samples, after grinding for a while, the defects on the tube wall will tend to be uniformly distributed.