2018-Sustainable Industrial Processing Summit
SIPS2018 Volume 8. Composite, Ceramic, Nanomaterials and Mathematics
| Editors: | F. Kongoli, M. de Campos |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2018 |
| Pages: | 184 pages |
| ISBN: | 978-1-987820-96-6 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Influence of the Structural Parameters on the Optical Properties of Nano-dispersive Nickel
Lali Kalandadze1; Omar Nakashidze1; Nugzar Gomidze1; Izolda Jabnidze1;1BATUMI SHOTA RUSTAVELI STATE UNIVERSITY, Batumi, Georgia;
Type of Paper: Regular
Id Paper: 276
Topic: 18
Abstract:
In general, the optical properties of nano-dispersive structures are very different from the properties of the bulk materials, and depend on the following structural parameters: the occupancy of the volume of the ultrafine medium with nanoparticles (q); the size and shape of the particles (f); the order of the particles; and the properties of the medium and surrounding nanoparticles (λ<sub>0</sub>) [1,2]. This was predictable because these structures contain from some atoms to thousands of atoms and take a middle place between atoms and massive substances, and subsequently, they have properties different from both of them. In the present paper, using the discontinuous Ni films as examples, we consider theoretically and experimentally the influence of the structural parameters on the optical properties of the ultrafine structures. In this work, the optical properties of nano-dispersive structures are represented within the theoretical Maxwell-Garnett model [3,4]. The behavior of the optical spectra of thin Ni films was explained in the framework of the effective medium approximation in two cases: q<0.5 and 0.5< q<1. In this approach, an effective refractive index (n-ik) of the nano-dispersive structures can be calculated as a function of the λ<sub>0</sub>, q, and particle shapes. These calculations proved a good agreement between the experimental results and the theoretical calculations.
Keywords:
Nanoparticles; Nanoscience;References:
[1] LV Nikitin, LG Kalandadze, MZ Akmedov, SA Nepijko, AP Ostranitsa, journal of Magnetism and Magnetic Materials 148 (1995) 279-280.[2] Nakashidze O. and Kalandadze L., New Developments in Materials Science; Nova Publishers; (2013), 119-126
[3] Nakashidze O. and Kalandadze L. 2016IEEE 7th international conference on Advanced Optoelectronics and Lasers; (2016), pp. 17-20
[4] Kalandadze L. Journal of Sensor Letters. American Scientific Publishers.V5, Number 1, (2007), pp. 13-14