“…For example Shi et al [1] have studied the structural evaluation of mechanically alloyed nanocrystalline FeAl intermetallics, Zakeri et al [2] have synthesized Bi 2 Te 3 nanocrystalline materials by using mechanical alloying, Rafea et al [3] have studied the structural and optical properties of nanosized Zn 0.5 Cd 0.5 S thin films prepared by dip-coating methods, Yang et al [4] have performed controlled synthesis and characterization of ZnSe nanostructures by using solvothermal approach in a mixed solution, Tripathi et al [5] have studied the optical properties of Se-Te nanostructured thin films grown by thermal evaporation, and Kotkata et al [6] have synthesized CdS nanoparticles. The work on temperature and capping dependence of NIR emission from PbS nanomicrocrystallites with different morphologies by Pendyala and Rao [7], synthesis of Ag 2 S and Ag 2 Se nanoparticles in self-assembled block copolymer micelles and nanoarrays fabrication by Anthony [8], characterization of Bi 2 S 3 nanorods and nanostructured flowers prepared by hydrothermal methods by Phuruangrat et al [9], synthesis of nano-Cd x Zn 1−x S by precipitate-hydrothermal methods and their photocatalytic activities by Zu et al [10], preparation and properties of nanoamorphous organic and in-organic particles by Senna and Nakayama [11], influence of heat treatment and gamma rays irradiation on the structural and optical characterization of nanocrystalline cobalt phthalocyanine thin films by El-Nahass et al [12], fabrication of nanocrystalline silicon thin film at low temperature by using a neutral beam deposition method by Kang et al [13], and analysis of amorphous-nano crystalline multilayer structures by optical, photodeflection, and photocurrent spectroscopy by Gracin et al [14] are also worth mentioning.…”