Experimental study of structural, surface morphology, optical and luminescence properties of MAl 2 O 4 /Al 2 O 3 (M = Co, Ni) composites

Optik ◽  
2018 ◽  
Vol 162 ◽  
pp. 172-181
Author(s):  
Shifa Wang ◽  
Danming Li ◽  
Yuhua Xiao
Keyword(s):  
Experimental Study ◽  
Surface Morphology ◽  
Luminescence Properties ◽  
Structural Surface

Investigations on the influence of 100 MeV O7+ion irradiation on the structural, surface morphology and optical studies of gallium nitride epilayers

2007 ◽  
Vol 162 (3-4) ◽  
pp. 229-236 ◽  
Author(s):  
V. Suresh Kumar ◽  
M. Senthil Kumar ◽  
J. Kumar ◽  
T. Mohanty ◽  
D. Kanjilal ◽  
...  
Keyword(s):  
Gallium Nitride ◽  
Surface Morphology ◽  
Ion Irradiation ◽  
Optical Studies ◽  
Structural Surface

Structural, surface morphology and radiation shielding properties of barium ferrite powder

2021 ◽  
Author(s):  
Atif Mossad Ali ◽  
Shams A M Issa ◽  
H Algarni ◽  
Huseyin Ozan O. Tekin ◽  
Hesham M.H. Zakaly ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Barium Ferrite ◽  
Radiation Shielding ◽  
Ferrite Powder ◽  
Structural Surface ◽  
Shielding Properties

Evolution of Surface Morphology During Cu(TMVS)(hfac) Sourced Copper CVD

2000 ◽  
Vol 612 ◽  
Author(s):  
Daewon Yang ◽  
Jongwon Hong ◽  
Timothy S. Cale
Keyword(s):  
Experimental Study ◽  
Water Vapor ◽  
Surface Morphology ◽  
Short Range ◽  
Nucleation And Growth ◽  
Growth Stages ◽  
Grain Sizes ◽  
Initial Stage ◽  
Afm Analysis ◽  
Evolving Surface

AbstractIn this paper, we describe an experimental study of the nucleation and growth stages during Cu(TMVS)(hfac) sourced Cu CVD on TaN substrates. In particular, we have investigated the effects of water vapor as a co-reactant on evolving surface morphology. The results of short (less than 10 s) depositions without/with water vapor indicate that water vapor helps to reduce the incubation time and to enhance the nuclei formation, uniformity, and adhesion (based on AFM analysis). Introducing water vapor during only the initial stage of deposition results in lower roughnesses, larger grain sizes, and lower short-range roughnesses as compared to the films deposited without water vapor. From this study, we conclude that water vapor enhances Cu nucleation and that a relatively small amount of water vapor before or during the initial stage of deposition improves surface morphology in terms of roughness and grain size.

scholarly journals An Experimental Study on Irradiated Interface of Silicon

2020 ◽  
pp. 72-79
Author(s):  
Min Raj Lamsal
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Surface Morphology ◽  
Energy Loss ◽  
Silicon Surface ◽  
Target Surface ◽  
Electronic Energy ◽  
Electron Volt ◽  
Atomic Force ◽  
Induced Stress

Atomic Force Microscopic (AFM) studies of Mega electron-volt (MeV) ions irradiated silicon surface morphology has been studied to a fluence of 5 x 108 ions/cm2. Interesting features of cracks of 50 nm in depth and 100 nm in width have been observed on the irradiated surface. The features seemed to have been caused by the irradiation-induced stress in the irradiated regions of the target surface. The observed feature of crack seems to be mainly due to the high electronic energy loss of the irradiated ions on the surface that induces the stress in it. It confirms that the coarseness of the microstructure of a material directly affect the mechanical properties.

scholarly journals Effect of laser deweighting on properties of ZL205A aluminum alloy

2021 ◽  
Vol 2137 (1) ◽  
pp. 012033
Author(s):  
Guang Li ◽  
Zhipeng Wei ◽  
Junlong Wang ◽  
Yangyang Zhang ◽  
Chen Wang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Surface Roughness ◽  
Aluminum Alloy ◽  
Surface Morphology ◽  
Pulse Laser ◽  
Process Parameters ◽  
Experimental Results ◽  
Matrix Properties ◽  
Before And After ◽  
The Matrix

Abstract In this paper, a nanosecond fiber pulse laser is used to carry out the experimental study on laser weight removal of ZL205A aluminum alloy gyro rotor. By optimizing the process parameters of laser weight removal, better surface morphology was obtained. The effects of surface roughness, metallographic structure and hardness of samples before and after laser deweighting were analyzed. The experimental results show that the laser weight removal does not affect the matrix properties of ZL205A aluminum alloy. The laser de-weight technology is suitable for the balance of ZL205A aluminum alloy gyro rotor.

Synthesis and Characterization of Ag/TiO2 Thin Film via Sol-Gel Method

2018 ◽  
Vol 273 ◽  
pp. 140-145 ◽  
Author(s):  
Dewi Suriyani Che Halin ◽  
Norsuria Mahmed ◽  
Mohd Arif Anuar Mohd Salleh ◽  
A.N. Mohd Sakeri ◽  
Kamrosni Abdul Razak
Keyword(s):  
Surface Morphology ◽  
Spin Coating ◽  
Sol Gel ◽  
Synthesis And Characterization ◽  
Drying Process ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coating Method ◽  
Structural Surface

Ag/TiO2thin films were prepared via sol-gel spin coating method. Structural, surface morphology and optical properties were investigated with the addition of two different amount of silver (Ag). X-ray diffraction pattern shows the sample with pure TiO2, the only phase presence was brookite TiO2. When the Ag content added into the solution, the phase existed for the samples with TiO2doped 0.5g Ag and TiO2doped 1.0g Ag were anatase TiO2with no peak corresponds to Ag phase. The surface morphology of film was characterized by scanning electron microscopy (SEM). The films were annealed at 450 °C and it shows non-uniform films. The films have a large flaky and cracks film which was attributed to surface tension between the film and the air during the drying process. When the solution of sol was added with Ag content, it shows the porous structure with flaky-crack films. With the increasing of the Ag content from 0.5g to 1.0g, the structure is more porous and it is good for the photocatalytic activity. The UV-Vis spectra shows that the film exhibits a low absorbance which was due to the substrate is inhomogeneously covered by the flaky-crack films.

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