Forecasting of Optical Properties of Matrix Composites with Spherical Inclusions with a Metal Shell

2018 ◽  
Vol 23 (2) ◽  
pp. 113-123
Author(s):  
I.V. Lavrov ◽  
Keyword(s):  
Optical Properties ◽  
Matrix Composites ◽  
Metal Shell ◽  
Spherical Inclusions

scholarly journals Surface Stoichiometry and Optical Properties of Cux–TiyCz Thin Films Deposited by Magnetron Sputtering

Coatings ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 551 ◽  
Author(s):  
Avishek Roy ◽  
Arun Kumar Mukhopadhyay ◽  
Sadhan Chandra Das ◽  
Gourab Bhattacharjee ◽  
Abhijit Majumdar ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Magnetron Sputtering ◽  
Photoelectron Spectroscopy ◽  
Metal Matrix ◽  
Optical Band Gap ◽  
Matrix Composites ◽  
X Ray ◽  
Peak Intensity ◽  
Ternary Carbide

Ternary carbide in metal matrix composites constitute a big challenge in the industry, and in this regard their surface treatment is one of the most important issues. Ternary carbide (CuxTiyCz, where x, y and z are integers) thin films are synthesized by magnetron sputtering and characterized with respect to the film depth. X-ray photoelectron spectroscopy (XPS) of Cu-2p and Ti-2p peaks shows the associated shake-up satellite peaks at a smaller film depth; the peak intensity is reduced at a higher depth. The relative intensity of Cu and Ti increases at a larger film depth. The optical band gap varies from 1.83 to 2.20 eV at different film depths.

Optical properties of spheres containing several spherical inclusions

1994 ◽  
Vol 33 (3) ◽  
pp. 484 ◽  
Author(s):  
F. Borghese ◽  
P. Denti ◽  
R. Saija
Keyword(s):  
Optical Properties ◽  
Spherical Inclusions

Study of Damping Properties of Polymer Matrix Composites Through Wave Propagation

2017 ◽  
Author(s):  
Shank S. Kulkarni ◽  
Alireza Tabarraei
Keyword(s):  
Polymer Composites ◽  
Vibrational Frequency ◽  
Volume Fraction ◽  
Polymer Matrix Composites ◽  
Matrix Composites ◽  
Damping Properties ◽  
Viscoelastic Matrix ◽  
Spherical Inclusions ◽  
Tan Δ ◽  
Damping Capability

We conduct a stochastic analysis to investigate the damping properties of polymer composites with viscoelastic matrix and elastic spherical inclusions. Since damping capability of polymer composites is directly related to the ratio of loss to storage modulus known as tan δ, we use computational homogenization techniques to investigate the effect of vibrational frequency, size and volume fraction of inclusions on tan δ. Our results show that tan δ is highly dependent on the frequency of vibrations as well as the volume fraction of inclusions. Our numerical analyses also show that tan δ is not sensitive to the size of inclusions as long as inclusions volume fraction remains the same.

Optical properties of spheres containing several spherical inclusions: errata

1995 ◽  
Vol 34 (24) ◽  
pp. 5556 ◽  
Author(s):  
F. Borghese ◽  
P. Denti ◽  
R. Saija
Keyword(s):  
Optical Properties ◽  
Spherical Inclusions

Study on Polymer Matrix Composites Used as Greenhouse Coverings: Optical Properties

2017 ◽  
Vol 863 ◽  
pp. 15-19
Author(s):  
Chyung Ay ◽  
Sun Wei Fong ◽  
Maw Tien Lee
Keyword(s):  
Atomic Force Microscopy ◽  
Optical Properties ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Polymer Matrix Composite ◽  
Matrix Composites ◽  
Force Microscopy ◽  
Cladding Layer ◽  
Atomic Force ◽  
Covering Material

The greenhouse is widely used in agriculture, and its covering material is one of the most important factors that affect its performance. In summer, the inner temperature of the greenhouse is usually too high for people to cultivate plants. In this work, a polymer matrix composite (PMC) was developed to reduce the inner temperature of the greenhouse without affecting the photosynthesis for the growth of plants. The PMC developed in this study was made of LDPE with suitable additives such as pigments, metal oxide etc. The morphology of the covering layer made of the PMC was observed with the atomic force microscopy (AFM). The transmittance of visible light and NIR through the cladding layer was measured with an optical fiber detector and used as the primarily performance index. Finally a simulated greenhouse was used to verify the cooling effect of the cladding layer. Experimental results showed that the PMC developed in this study gave more temperature reduction than that of the commercial PE covering.

Design of objective lens for 200-kV high-resolution electron microscopes

1983 ◽  
Vol 41 ◽  
pp. 314-315
Author(s):  
K. Tsuno ◽  
T. Honda ◽  
Y. Harada ◽  
M. Naruse
Keyword(s):  
Optical Properties ◽  
Computer Technology ◽  
Axial Magnetic Field ◽  
Chromatic Aberration ◽  
Objective Lens ◽  
Resolution Electron ◽  
Correction Of Astigmatism ◽  
Three Stages ◽  
Electron Microscopes ◽  
Stage 1

Developement of computer technology provides much improvements on electron microscopy, such as simulation of images, reconstruction of images and automatic controll of microscopes (auto-focussing and auto-correction of astigmatism) and design of electron microscope lenses by using a finite element method (FEM). In this investigation, procedures for simulating the optical properties of objective lenses of HREM and the characteristics of the new lens for HREM at 200 kV are described.The process for designing the objective lens is divided into three stages. Stage 1 is the process for estimating the optical properties of the lens. Firstly, calculation by FEM is made for simulating the axial magnetic field distributions Bzc of the lens. Secondly, electron ray trajectory is numerically calculated by using Bzc. And lastly, using Bzc and ray trajectory, spherical and chromatic aberration coefficients Cs and Cc are numerically calculated. Above calculations are repeated by changing the shape of lens until! to find an optimum aberration coefficients.

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