[摘要]:Unlike their bulk counterpart, nanoparticles often show spontaneous fluctuations in their crystal structure at constant temperature [Iijima , S.; Ichihashi T. Phys. Rev. Lett. 1985, 56, 616; Ajayan, P. M.; Marks L. D. Phys. Rev. Lett. 1988, 60, 585; Ben-D