Structural transitions of SWNT filled with C60 under high pressure
Zou Yong-gang1, Xu Li1, †, , Tian Kun1, Zhang He1, Ma Xiao-hui1, Yao Ming-guang2
       

Raman spectra of C60@SWNTs peapod samples under atmospheric pressure and high pressures, with laser excitation wavelengths of (a) 830 nm and (b) 514 nm.