Morteza Sasani Ghamsari
Photonics and Quantum Technologies Research School, NSTRI, Tehran, Iran
[ 1 ] - Colloidal synthesis of germanium nanocrystals
In this study, colloidal germanium nanocrystals were synthesized by a simple and novel method, and their optical properties were also studied. Polyvinyl alcohol (PVA) as a surface modifier was used to control the optical properties of colloidal Ge nanocrystals. Fourier transform infrared spectroscopy (FTIR) analysis was performed to identify the various functional groups present in the sample. ...
[ 2 ] - Synthesis, characterization, and gas sensing properties of In-doped ZnO nanopowders
Indium (1at %) doped ZnO and ZnO nanoparticles have been synthesized via sol gel method. The structural characters of the synthesized nanoparticles have been studied by X-ray diffraction pattern (XRD), scanning electron microscopy (SEM) and energy-dispersiveX-ray spectroscopy (EDX). From synthesized nanopowders a tablet was prepared by using the isostatic pressing and then sintered at ...
[ 3 ] - Temperature effect on the nucleation and growth of TiO2 colloidal nanoparticles
The nucleation and growth of sol-gel derived TiO2 colloidal nanoparticles have been studied using experiment and theory as well. In this study, the temperature effect on the formation of TiO2 nanoparticles was discussed and some effective parameters such as the supply rate of solute (Q0), the mean volumic growth rate of stable nuclei during the nucleat...
[ 4 ] - تهیه نانو ذره های ژرمانیوم با استفاده از روش کلوئیدی و مشخصه یابی آنها
در این پژوهش برای اولین بار نانوذره های کلوئیدی ژرمانیوم به عنوان یک منبع نور آبی توسط یک روش ساده تهیه شده و مورد مطالعه قرار گرفته است. در این روش از ترکیب پلی وینیل پایرولیدین به عنوان ماده عامل دار کننده سطحی ذره ها و کنترل اندازه آن ها استفاده شده است. برای بررسی ویژگی های نوری نانو ذره ها ...
نویسندگان همکار