The components of the tangential stretch mode of swtns are assigned , the variational curve of the value of ig / id changed with laser power is obtained at 632 . 8nm excitation , the vibration of d mode is assigned renewedly 對單壁碳納米管的正切拉伸模的成分進(jìn)行了歸屬,在632 . 8nm激發(fā)波長下得到了ig / io值的隨激光功率變化曲線。重新對d模的振動進(jìn)行了歸屬。