scholarly journals Chitosan capped nickel oxide nanoparticles as a saturable absorber in a tunable passively Q-switched erbium doped fiber laser

RSC Advances ◽  
2018 ◽  
Vol 8 (45) ◽  
pp. 25592-25601 ◽  
Author(s):  
Harith Ahmad ◽  
Siti Aisyah Reduan ◽  
Norazriena Yusoff
Keyword(s):  
Thin Film ◽  
Nickel Oxide ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Oxide Nanoparticles ◽  
Nio Nanoparticles ◽  
Nickel Oxide Nanoparticles ◽  
Chloride Hexahydrate ◽  
Erbium Doped

Nickel oxide (NiO) nanoparticles prepared from a nickel(ii) chloride hexahydrate precursor are used to form a chitosan capped NiO nanoparticle thin film that serves as a saturable absorber in a passively Q-switched erbium doped fiber laser.

Nickel oxide nanoparticles as a saturable absorber for an all-fiber passively Q-switched erbium-doped fiber laser

Laser Physics ◽  
2017 ◽  
Vol 27 (6) ◽  
pp. 065105 ◽  
Author(s):  
A Nady ◽  
M H M Ahmed ◽  
A A Latiff ◽  
A Numan ◽  
C H Raymond Ooi ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Oxide Nanoparticles ◽  
Nickel Oxide Nanoparticles ◽  
Erbium Doped

Nickel oxide nanoparticles thin film saturable absorber for 1-micron pulsed all-fibre lasers operation

2018 ◽  
Vol 65 (15) ◽  
pp. 1801-1808 ◽  
Author(s):  
A. H. H. Al-Masoodi ◽  
M. H. M. Ahmed ◽  
A. A. Latiff ◽  
H. Arof ◽  
S. W. Harun
Keyword(s):  
Thin Film ◽  
Nickel Oxide ◽  
Saturable Absorber ◽  
Oxide Nanoparticles ◽  
Fibre Lasers ◽  
Nickel Oxide Nanoparticles

scholarly journals Plant Extract Mediated Synthesis of Nickel Oxide Nanoparticles

2020 ◽  
Vol 2 (2) ◽  
pp. 205-209
Keyword(s):  
Fourier Transform ◽  
Nickel Oxide ◽  
Fourier Transform Infrared ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Leaf Extracts ◽  
Nickel Oxide Nanoparticles ◽  
X Ray ◽  
Chloride Hexahydrate ◽  
Scanning Electron

The present study reports the successful synthesis of nickel oxide nanoparticles using Vernonia amygdalina plant leaf extracts as a chelating agent and nickel (II) chloride hexahydrate (NiCl2•6H2O) as precursor. The synthesized powder was gray black in color and annealed at 500 °C for 2 hours to obtain nickel oxide nanoparticles. Characterization techniques such as powder X-ray diffraction, scanning electron microscopy, and Fourier transform infrared spectroscopy were used to study the structure and morphology of the nanoparticles. Powder X-ray diffraction patterns revealed that nickel oxide nanoparticles with an average crystallite size of 17.86nm were synthesized. Scanning electron microscope images show that the nanoparticles have octahedral structure. Fourier transform infrared spectrophotometer analysis revealed that the strongest bond at 1094.8cm-1 corresponds to stretching vibration mode of Ni-O nanoparticles.

Magnesium oxide (MgO) thin film as saturable absorber for passively mode locked erbium-doped fiber laser

2019 ◽  
Vol 115 ◽  
pp. 331-336 ◽  
Author(s):  
Wurood Abdulkhaleq Khaleel ◽  
Sinan Abdulhameed Sadeq ◽  
I.A.M. Alani ◽  
M.H.M. Ahmed
Keyword(s):  
Thin Film ◽  
Fiber Laser ◽  
Magnesium Oxide ◽  
Saturable Absorber ◽  
Erbium Doped

Femtoseconds soliton mode-locked erbium-doped fiber laser based on nickel oxide nanoparticle saturable absorber

2017 ◽  
Vol 15 (10) ◽  
pp. 100602 ◽  
Author(s):  
A. Nady A. Nady ◽  
M. H. M. Ahmed M. H. M. Ahmed ◽  
A. A. Latiff A. A. Latiff ◽  
C. H. Raymond Ooi C. H. Raymond Ooi ◽  
S. W. Harun S. W. Harun
Keyword(s):  
Nickel Oxide ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Nickel Oxide Nanoparticle ◽  
Erbium Doped ◽  
Oxide Nanoparticle

FIrpic thin film as saturable absorber for passively Q-switched and mode-locked erbium-doped fiber laser

2019 ◽  
Vol 50 ◽  
pp. 256-262 ◽  
Author(s):  
Sameer Salam ◽  
A.H.H. Al-Masoodi ◽  
Ahmed Shakir Al-Hiti ◽  
Ab.H.H. Al-Masoodi ◽  
Pengfei Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Fiber Laser ◽  
Saturable Absorber ◽  
Erbium Doped

A ppb-Level Formaldehyde Gas Sensor Based on Rose-Like Nickel Oxide Nanoparticles Prepared Using Electrodeposition Process

NANO ◽  
2016 ◽  
Vol 11 (01) ◽  
pp. 1650009 ◽  
Author(s):  
Yong Zhang ◽  
Long-Zhen Xie ◽  
Chao-Xin Yuan ◽  
Chun-Lin Zhang ◽  
Su Liu ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Indium Tin Oxide ◽  
Gas Sensing ◽  
Operating Temperature ◽  
Oxide Nanoparticles ◽  
Nio Nanoparticles ◽  
Nickel Oxide Nanoparticles ◽  
Glass Substrates ◽  
Ito Glass ◽  
Concentration Properties

In this study, rose-like nickel oxide nanoparticles (diameter of 400–500[Formula: see text]nm) were prepared on indium tin oxide (ITO) glass substrates by a simple electrodeposition in NiSO[Formula: see text]6H2O solution. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscope (TEM) were used for analysis of the NiO nanoparticles. The effects of operating temperature on the sensor response and the response versus gas concentration properties of the NiO nanorose-based sensors were investigated. We determined the operating temperature of the gas sensors to be 230[Formula: see text]C, considering the proper sensitivity and a rapid response. In addition, gas-sensing characteristics of rose-like NiO nanoparticles to formaldehyde were investigated. It was shown that the sensors exhibited good response ([Formula: see text]/[Formula: see text]) properties to formaldehyde gas at 230[Formula: see text]C, making them to be promising candidates for practical detectors to formaldehyde gas.

scholarly journals Effect of nickel oxide nanoparticles on protease activity in brewing industry

2021 ◽  
Vol 845 (1) ◽  
pp. 012110
Author(s):  
D V Karpenko ◽  
S A Kanaev
Keyword(s):  
Nickel Oxide ◽  
Enzyme Preparation ◽  
Molecular Nitrogen ◽  
Reaction Medium ◽  
Oxide Nanoparticles ◽  
Industrial Complex ◽  
Nio Nanoparticles ◽  
Nickel Oxide Nanoparticles ◽  
Barley Malt ◽  
Amine Nitrogen

Abstract Intensive use of nanoparticles on an industrial scale leads to an increase in their content in the environment. This increases the risks of nano-sized objects entering the technological chains of the processing industries of the agro-industrial complex, in particular, brewing. The paper presents the results of the studies of the effect of nickel oxide nanoparticles used in various industries on the activity of the proteolytic type of enzyme preparation Neutrase 1.5MG, as well as on the results of laboratory mashing of light barley malt. The effect of different concentrations of NiO nanoparticles on the accumulation of low molecular weight nitrogenous substances during gelatin hydrolysis in model media was determined. It was found that if the content of nanoparticles exceeds 0.25 mg/cm3, the proteolytic capacity of the enzyme preparation is reduced up to 70% compared to the control at the concentration of nickel oxide nanopreparation of 2.0 mg/cm3. The experiments showed that an increase in the duration of contact between nanoparticles and proteases of the enzyme preparation in the reaction medium did not lead to an increase in the inhibitory effect of the nano-sized NiO. The laboratory mashing revealed more pronounced negative effect of nickel oxide nanoparticles on the accumulation of low-molecular nitrogen compounds. It is determined that in the presence of NiO nanopreparation, the hydrolysis efficiency of the starchy components of light barley malt is reduced. As a result, according to a number of indicators (concentration of amine nitrogen, reducing substances), the first wort obtained by mashing in the presence of nickel oxide nanoparticles at both lower (0.25 mg/cm3) and higher (2.0 mg/cm3) concentrations is inferior to samples obtained in the absence of nano-sized particles. Based on the above data, it is concluded that the presence of NiO nanoparticles in brewing environments is undesirable.

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