And so, as I am not and, so far as one can judge, cannot be enchanted, she it is that is enchanted, that is smitten, that is altered, changed, and transformed; in her have my enemies revenged themselves upon me, and for her shall I live in ceaseless tears, until I see her in her pristine state
. I have mentioned this lest anybody should mind what Sancho said about Dulcinea's winnowing or sifting; for, as they changed her to me, it is no wonder if they changed her to him.
n(mod 3) = 1 and n(mod 3) = 2) are semiconducting in their pristine states. The energy band gap of n(mod 3) = 0 zigzag SWCNT increases and a relatively decreasing conducting effect is seen for di-vacany defected (12,0) tube.
Some of the other researchers also studied the band gap modification of armchair SWCNTs that show a metallic behavior in their pristine state [17-19].
It is shown that pristine (12,0) tube (nvac=0) has no band gap, indicating metallic behavior in its pristine state. When the vacancy defects are introduced in the horizontal direction, a band gap appears and it opens up.
As shown in this figure, the band gap of (12,0) nanotube is 0.01 eV in the pristine state. When a monovacancy is introduced in the horizontal direction the band gap opens and reaches 0.13 eV for the di-vacancy defected tube.