Figure 2.

a SEM and b TEM images of the pristine MWCNTs,c SEM, and d TEM images of ECR-plasma-treated MWCNTs with 5 min exposure under H2/O2 gas compositions of 40/10 (sccm/sccm)

Tseng et al. Nanoscale Research Letters 2008 4:234-239   doi:10.1007/s11671-008-9231-4