Synthesis and complete Mie analysis of different sizes of TiO2 nanoparticles
| Autor: | M.H. Majles Ara, H. Akherat Doost, Ehsan Koushki |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science business.industry Scanning electron microscope Scattering Mie scattering Analytical chemistry Physics::Optics Nanoparticle 02 engineering and technology Dielectric Molar absorptivity 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Optics Extinction (optical mineralogy) 0103 physical sciences Electrical and Electronic Engineering 0210 nano-technology business Refractive index |
| Zdroj: | Optik. 127:1946-1951 |
| ISSN: | 0030-4026 |
| DOI: | 10.1016/j.ijleo.2015.11.051 |
| Popis: | TiO 2 nano particles with special photonic properties have many applications such as sunscreen production, radar design, detectors and sensors generations and many others photonic applications. The main goal of this study is investigating the optical properties of TiO 2 nanoparticles which are synthesized via sol-gel method by hydrolysis of titanium (IV)-iso-propoxide with water in n -propanol. The size of the particles are measured using scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX). Applying optical properties analysis of nanoparticles estimates the optical energy gap ( E g ), the optical constants as refractive index ( n ), extinction coefficient ( k ) and dielectric constant. Moreover, the Mie's analysis was studied for three different sizes of nanoparticles and extinction, scattering, back scattering and ratio cross sections have been calculated. Results show that by increasing the nanoparticle diameters, the peak of all spectra is red-shifted for larger particles and cross sections peak shift to high values. Also, a matrix of Mie scattering intensities as a function of u = cos θ for different nanoparticle diameters are plotted to place the nanoparticles at a proper interface. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect