Carbon nanotubes (CNTs) have drawn great attention since they
were found at first in1991 [1] because of their marvelous structure,
high stability,and excellent conductivity or semiconductivity [2].
Numerous studies have been devoted to investigation of stable
structures of non–carbonnanotubes.
Among these structures, the
III–V analogs of carbon nanotubes such as boron-nitride nanotubes
(BNNTs) and aluminum-nitride nanotubes (AlNNTs) are of great importance [3–5].