مشخصات پژوهش

عنوان	THE EVOLUTION OF FABRICATED GOLD THIN FILMSTO NANO–MICRO PARTICLES UNDER THERMAL ANNEALING PROCESS
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Gold thin Films; nano–micro particles; physical properties; annealing temperature
چکیده	Gold (Au) thin films with thickness of 35nm were prepared by electron beam deposition on to flat glass substrates under high vacuum (5.3×10-3Pa) condition and they have been annealed in the range of 573-873 K for 1 and 2 hour in atmospheric pressure. The influence of the annealing temperature on the evolution of Au thin film to nano-micro particles was studied. Moreover, the basic properties of the films, namely morphological, structural and optical were investigated. The X-ray diffraction (XRD) analysis revealed that the Au thin films were cubic structure phase with lattice parameter around a =4.0786 Å. The most preferential orientation is along (111) planes for all Au films. The lattice parameter and grain size in the films were calculated by X-ray patterns and correlated with annealing temperatures. The obtained results of Ultraviolet-Visible Spectrometry (UV-Vis) indicate that with increasing annealing temperature, the surface plasmon resonance peak of gold nanocrystallite will disappear which implies the size of particles are grown. Field-Emission Scanning Electron Microscopy (FE-SEM) results show that the prepared gold thin films have been converted to nano- micro gold particles in different annealing temperatures. These results lead to control the size of produced nanocrystallite.
پژوهشگران	مهدی حاجی ولیئی (نفر اول)، سعید نظری (نفر دوم)