Influence of γ-Ray and Neutron Irradiation on the Conductivity of Synthetic Pure Zinc Oxide (ZnO) and of the System ZnO · Al2O3

1972 ◽  
pp. 16-20
Author(s):  
T. Kortenski ◽  
T. D’yakov ◽  
S. Ivanov ◽  
L. Bonchev
Keyword(s):  
Zinc Oxide ◽  
Neutron Irradiation ◽  
Pure Zinc ◽  
Γ Ray

Low Temperature Deposition of Zinc Oxide Films

2003 ◽  
Vol 763 ◽  
Author(s):  
H. W. Lee ◽  
Y. G. Wang ◽  
S. P. Lau ◽  
B. K. Tay
Keyword(s):  
Zinc Oxide ◽  
Carrier Concentration ◽  
Vacuum Arc ◽  
Zno Films ◽  
Al Alloy ◽  
Pure Zinc ◽  
Zinc Oxide Films ◽  
Alloy Target ◽  
Temperature Deposition ◽  
Filtered Cathodic Vacuum Arc

AbstractA detailed study of zinc oxide (ZnO) films prepared by filtered cathodic vacuum arc (FCVA) technique was carried out. To deposit the films, a pure zinc target was used and O2 was fed into the chamber. The electrical properties of both undoped and Al-doped ZnO films were studied. For preparing the Al-doped films, a Zn-Al alloy target with 5 wt % Al was used. The resistivity, Hall mobility and carrier concentration of the samples were measured. The lowest resistivity that can be achieved with undoped ZnO films was 3.4×10-3 Ωcm, and that for Al-doped films was 8×10-4 Ωcm. The carrier concentration was found to increase with Al doping.

The determination of boron in sedimentary rocks by neutron irradiation and prompt γ-ray spectrometry

1980 ◽  
Vol 57 (2) ◽  
pp. 525-533 ◽  
Author(s):  
S. A. Kerr ◽  
W. V. Prestwich ◽  
T. J. Kennett ◽  
D. M. Shaw
Keyword(s):  
Neutron Irradiation ◽  
Sedimentary Rocks ◽  
Γ Ray

scholarly journals Optical Properties of Sn Doped ZnO Thin Film Prepared Using Sol-Gel Method for Optical Limiting Application

2021 ◽  
Vol 24 (3) ◽  
pp. 38-42
Author(s):  
Marwa Mudfer Alqaisi ◽  
◽  
Alla J. Ghazai ◽  
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Optical Properties ◽  
Sol Gel ◽  
Visible Region ◽  
Optical Limiting ◽  
Pure Zinc ◽  
Gel Method ◽  
Sol Gel Method ◽  
Doped Zno

In this work, pure Zinc oxide and tin doped Zinc oxide thin films nanoparticles with various volume concentrations of 2, 4, 6, and 8V/V% were prepared by using the sol-gel method. The optical properties were investigated by using UV-Visible spectroscope, and the value exhibits the direct allowed transition. The average of transmittance was around ~(17-23) %in visible region. The optical energy band gap was calculated with wavelength (300-900) nm for pure ZnO and Sn doped ZnO thin films which decreases with increasing concentration from 3.4 eV to 3.1 eV respectively and red shift. The real dielectric(εr) and the imaginary dielectric εiare the same behavior of the refractive index(n) the extinction coefficient (k) respectively. The optical limiting properties were studied by using an SDL laser with a wavelength of 235 nm. ZnO and doping thin films an found efficient as optic limiting and depend on the concentration of the all samples.

Eco friendly synthesis and characterization of zinc oxide nanoparticles from Aegle marmelos and its cytotoxicity effects on MCF-7 cell lines

2021 ◽  
Vol 6 (1) ◽  
pp. 44-51
Author(s):  
Manikandan Dhayalan ◽  
Malathi Selvaraj ◽  
Kumar B Karthick ◽  
Riyaz S.U. Mohammed ◽  
Mika Sillanpää
Keyword(s):  
Zinc Oxide ◽  
Cell Lines ◽  
Absorption Peak ◽  
Aegle Marmelos ◽  
Zno Nps ◽  
Pure Zinc ◽  
Characteristic Absorption ◽  
Characteristic Absorption Peak ◽  
Vis Spectroscopy ◽  
Mcf 7

Abstract An attempt was made to synthesize zinc oxide gum white nanoparticles (ZnO-GWNPs) by the greenway approach using Aegle marmelos (Bael fruit) juice extract as a capping and reducing agent. Synthesis of ZnO-GWNPs by greener approach is safer, more economical, more energy-efficient, eco-friendlier, and less toxic than chemically synthesized counterparts. The optical properties of the ZnO-GWNPs were ascertained through UV-Vis spectroscopy, Fourier Transform-Infrared (FT-IR), X-ray diffraction (XRD), High-resolution transmittance electron microscopy (HRTEM). A characteristic absorption peak at 385nm confirmed the presence of ZnO-GWNP using UV-Vis spectroscopy. FTIR spectrum revealed that the characteristic absorption peak of the Zn-O bond was observed at 467 cm-1. The XRD result for the ZnO showed the tendency of the three most intense diffraction peaks. The average crystallite size ZnO NPs at scattering angle (2θ) 22.89 and 32.15 was 39.14 and 26.08 nm and it showed the presence of miller indices of (100), (002), (101), (102) respectively. The EDX spectrum gave strong signals for zinc and oxygen indicating the occurrence of the nanoparticles in their oxide form rather than the pure zinc form. The SEM image showed the surface morphology of ZnO-GW NPs and the HR-TEM image showed the crystalline nature of ZnO-GW NPs. Cytotoxicity study of ZnO-GW NPs was determined against MCF-7 cell lines and the IC50 values were found to be 40 µg/mL and 60 µg/mL at 24 h and 48 h respectively.

scholarly journals Laser-Induced Synthesis of Pure Zinc Oxide Nanoflakes

2020 ◽  
Vol 1472 ◽  
pp. 012005
Author(s):  
Raghda Sabry ◽  
Mohamed Fikry ◽  
Ola S Ahmed ◽  
Abdel Rahman N Zekri ◽  
Abdallah F Zedan
Keyword(s):  
Zinc Oxide ◽  
Pure Zinc

SERS activity and spectroscopic properties of Zn and ZnO nanostructures obtained by electrochemical and green chemistry methods for applications in biology and medicine

2020 ◽  
Vol 22 (48) ◽  
pp. 28100-28114
Author(s):  
Edyta Proniewicz ◽  
Agnieszka Tąta ◽  
Anna Wójcik ◽  
Maria Starowicz ◽  
Joanna Pacek ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Green Chemistry ◽  
Zinc Oxide Nanoparticles ◽  
Spectroscopic Properties ◽  
Body Fluids ◽  
Oxide Nanoparticles ◽  
Selective Detection ◽  
Zno Nanostructures ◽  
Pure Zinc

This work evaluates the ability of homogeneous, stable, and pure zinc oxide nanoparticles (ZnONPs-GS) synthesized by “green chemistry” for the selective detection of four neurotransmitters present in body fluids and promotion of the SERS effect.

scholarly journals Influence of processing parameters on the densification and the microstructure of pure zinc oxide ceramics prepared by spark plasma sintering

2019 ◽  
Vol 45 (8) ◽  
pp. 10035-10043 ◽  
Author(s):  
P.M. Radingoana ◽  
S. Guillemet-Fritsch ◽  
P.A. Olubambi ◽  
G. Chevallier ◽  
C. Estournès
Keyword(s):  
Zinc Oxide ◽  
Spark Plasma Sintering ◽  
Processing Parameters ◽  
Oxide Ceramics ◽  
Pure Zinc ◽  
Plasma Sintering ◽  
Spark Plasma
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