Article
Chemistry, Physical
H. A. Saudi, W. M. Abd-Allah
Summary: The optical, structural, and radiation shielding properties of glasses with different contents of WO3 and ZnO were comprehensively studied. Experimental and theoretical data were compared, indicating the potential applications of these glasses in radiation shielding.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Polymer Science
Samia E. Ibrahim, R. El-Mallawany, A. S. Abouhaswa
Summary: Tellurite borate glasses doped with CeO2 at different mol% were synthesized using the melt quenching technique. The properties such as density, XRD, Raman spectroscopy, and UV-Vis analysis were measured. The addition of CeO2 affected the optical characteristics of the glass samples, as demonstrated by changes in the optical energy gap and absorbance. The electrical conductivity and dielectric properties were also influenced by the frequency and composition of the glasses.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Optics
Aly Okasha, S. Y. Marzouk, A. M. Abdelghany
Summary: A glass composition was successfully prepared using the melt quenching technique, with varying CuO ratios added to alter its optical properties, resulting in band-pass or cut-off glass filters. The changing CuO content influenced the optical absorption properties, with structures examined through FTIR absorption spectroscopy. The reasons for the filtering properties were discussed in relation to optical absorption, and the structural changes in the glass samples were analyzed using FTIR absorption spectroscopy.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Ahmad S. Abu-Khadra, Ashraf M. Taha, A. M. Abdel-Ghany, Ashraf A. Abul-Magd
Summary: By adding AgI to cobalt-lead borate glasses, the glass network's compactness can be enhanced, the structure units of boron can be modified, and spectral tunability for optical absorption can be provided. These glasses exhibit semiconductor properties and are suitable for multi-functional optical devices operating in the visible and near-infrared spectral regimes.
CERAMICS INTERNATIONAL
(2021)
Article
Optics
R. A. A. Silva, N. F. Dantas, R. F. Muniz, A. M. O. Lima, F. Pedrochi, A. Steimacher, M. J. Barboza
Summary: This study investigated the optical and spectroscopic properties of Er3+/Yb3+ co-doped calcium borotellurite glasses and found that they exhibited high refractive index and high emission intensity, making them suitable for applications such as photonic amplifiers or other photonic devices.
JOURNAL OF LUMINESCENCE
(2022)
Article
Optics
E. M. Ahmed, A. A. Elzelaky, N. A. El-Ghamaz, M. I. Youssif
Summary: A series of glass samples with a composition of 60% B2O3 -35% Pb3O4 - (5-x)% ZnO - x% Y2O3 were prepared using the melt quenching technique. The samples were found to be amorphous by X-ray diffraction analysis. The density of the samples decreased and the molar volume increased with increasing Y2O3 content. The structural changes in the glass network were investigated using density and molar volume measurements, as well as FT-IR analysis.
Article
Optics
Leonid Yu Mironov, Elena Kolobkova
Summary: A series of new fluorophosphate glasses with varying concentrations of Yb3+ ions were synthesized and characterized through absorption, luminescence, and luminescence kinetics measurements, while potential laser performance parameters were calculated, such as pump saturation and minimum fraction of excited ions needed for gain balance.
JOURNAL OF LUMINESCENCE
(2022)
Article
Engineering, Electrical & Electronic
Bahaaudin M. Raffah, Yas Al-Hadeethi, Adel Bandar Alruqi, A. Hakamy, Y. S. Rammah, A. S. Abouhaswa
Summary: The study evaluates the influence of cerium oxide on the properties of barium-vanadate-borate glass samples, finding that increasing CeO2 concentration can decrease the optical band gap and improve the attenuation performance of the glass.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Hanan Al-Ghamdi, Norah A. M. Alsaif, Z. Y. Khattari, M. S. Shams, Adel M. El-Refaey, M. S. Sadeq, Y. S. Rammah, R. A. Elsad, M. A. El-Shorbagy, Shaaban M. Shaaban
Summary: This study investigates the synthesis, physical, vibrational, optical, and dielectric characteristics of bismuth-borate barium glasses doped with chromium. The experimental results show that the prepared glasses are amorphous in nature, with slightly decreased density and increased molar volume. The optical energy bands, linear refractive index, and nonlinear refractive index vary with the chromium content.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Afaf M. Babeer, M. I. Sayyed, H. Y. Morshidy, Abd El-razek Mahmoud, M. A. Abdo, M. S. Sadeq
Summary: This study investigated the effects of PbO and BaO on the optical and radiation shielding properties of glass samples. The results showed that increasing PbO and BaO concentrations can improve the transparency and radiation shielding performance of the glass samples.
Article
Materials Science, Ceramics
R. Lisiecki
Summary: Germanatetellurite glasses doped with dysprosium at different concentrations were studied for their luminescence characteristics and temperature-dependent absorption using optical spectroscopy techniques. The findings revealed that the efficiency of dysprosium excitation decreases at higher temperatures and demonstrated the presence of effective dysprosium interactions in the studied glasses.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Ceramics
B. V. Padlyak, I. I. Kindrat, A. Drzewiecki, V. I. Goleus, Y. S. Hordieiev
Summary: The optical properties of two undoped glass systems were studied, with PbO-B2O3-GeO2-La2O3 glass showing broad emission upon UV excitation, while PbO-B2O3-SiO2-ZnO glass revealing only a broad emission band.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Engineering, Electrical & Electronic
S. Vedavyas, K. Chandra Sekhar, Sheik Ahammed, G. Ramadevudu, M. Narasimha Chary, Md. Shareefuddin
Summary: The manuscript explores the role of cadmium oxide in radiation shielding materials, highlighting the importance of increased density in lead boro-tellurite glasses for radiation shielding properties. Spectral analysis reveals characteristics of copper-doped glasses, with lower Urbach energy values indicating higher glass orderliness.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Hosam Othman, Brian Topper, Hagar Elkholy, Doris Moncke
Summary: Lead-containing alkali/alkaline-earth borate and barium lead phosphate glasses were studied to investigate the optical properties of Pb2+ ions. The s-p transition of Pb2+ was found to correlate with the optical basicity of the host glass in both borates and phosphates. The emission of Pb2+ differed significantly between the two types of glasses due to the different charged sites available to accommodate Pb2+ cations.
INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE
(2023)
Article
Optics
Jamila S. Alzahrani, Chalermpon Mutuwong, Canel Eke, Abeer S. Altowyan, I. O. Olarinoye, M. S. Al-Buriahi
Summary: Three bismuth-borate glasses with different dopant ions were studied for their optical and gamma-radiation absorption behavior. The optical parameters of the glasses were calculated using theoretical models, and the mass attenuation coefficient was estimated through simulations. The glasses showed better ability to absorb photons compared to conventional shields, indicating their potential in optical and gamma-radiation absorption technologies.
Article
Chemistry, Physical
Amira M. EL-Rafei, Moenis A. Azooz, Esmat M. A. Hamzawy
Summary: Transparent glass prepared from nominal alkali pyroxene composition with the incorporation of Cr2O3 exhibited an increased crystallization temperature of high cristobalite. The glass-ceramic samples showed nanometer crystals of high cristobalite with moderate to excellent antimicrobial activity against both gram positive bacteria and pathogenic fungal yeast. Sample NMCr1 demonstrated excellent antifungal activity specifically against Candida albicans, indicating potential as an antifungal agent.
Article
Engineering, Electrical & Electronic
Ahmed H. Hammad, M. A. Azooz, S. Y. Marzouk, H. A. Elbatal
Summary: A novel zinc borate glass doped with mixed rare-earth ions such as erbium and ytterbium was prepared by conventional melt annealing process. The study found that the glass density increased and the optical transition values decreased with increasing Yb3+ ion content. The Judd-Ofelt theory was used to analyze the spectroscopic properties of the glass, highlighting its high covalent character.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
F. H. ElBatal, M. A. Azooz, Y. M. Hamdy, F. M. Ezz ElDin, S. M. Abo-Naf, H. A. ElBatal
Summary: Fluorophosphate glasses doped with MnO2 under varying melting conditions were studied using optical, FTIR, photoluminescence, and E.S.R spectroscopy. The results show that the spectral properties of the MnO2-doped glasses are influenced by the melting conditions, with changes observed in the FTIR spectra, photoluminescence intensity, and measurable divalent Mn2+ ions in the E.S.R spectra.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Optics
Mohamed Ashour, M. Sh Abdel-Wahab, Abdullah Shehata, Wael Z. Tawfik, M. A. Azooz, Souad A. Elfeky, Tarek Mohamed
Summary: This paper experimentally investigated the linear and third-order optical nonlinearities of a pure CuO thin film deposited on a soda-lime glass substrate. The film's structure and linear optical properties were measured using XRD, surface profilometer, and UV-Vis spectrophotometer. The Z-scan technique was used to measure the film's nonlinear optical properties under different excitation wavelengths and incident laser powers. The results showed a reduction in nonlinear absorption coefficient and nonlinear refractive index with increasing excitation wavelength, and wavelength-dependent optical limiting of the CuO thin film.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
H. A. ElBatal, M. A. Azooz, G. T. El-Bassyouni, F. H. ElBatal, E. M. Hamzawy
Summary: The glasses from the ternary system SiO2-Li2O-TiO2 with increasing titania content replacing silica were prepared by melting-annealing technique. The thermal and structural properties of the glasses were evaluated, showing an increase in coefficient of thermal expansion with titania content. X-ray diffraction and SEM investigations revealed the formation of different crystalline phases with increasing TiO2 content, impacting the mechanical properties of the glass.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
M. A. Ouis, F. H. ElBatal, M. A. Azooz, H. A. ElBatal
Summary: Glasses with variable LiF contents were prepared and characterized in terms of optical, FTIR spectral properties, and thermal expansion parameters. Heat-treated glass-ceramics were also analyzed to determine their structural building groups and crystalline phases. The results show that the LiF content affects the material's softening temperature and the formation of different crystalline phases. SEM images support the X-ray diffraction data, showing variations in texture with high LiF content.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
M. Abdel-baki, Ayman M. Mostafa, M. A. Azooz, A. M. Fayad
Summary: This study prepared a series of oxyflouroborate glasses and investigated the effects of Li2O substitution for MgF2 on the physical and optical properties. The results showed that the addition of MgF2 significantly affected the optical properties of the glass, making it suitable for certain telecommunications wavelength bands and upconversion fiber lasers.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Ceramics
H. M. Elsaghier, M. A. Azooz, Nehad A. Zidan, W. Abbas, Aly Okasha, S. Y. Marzouk
Summary: Alkali cadmium phosphate glasses doped with erbium ions were prepared using traditional melt-quenching technique. The structure and optical properties of the doped glasses were investigated using FTIR, Raman, and UV-Vis-NIR spectroscopies. The Judd-Ofelt theory was used to analyze the structural changes and calculate radiative parameters. The results showed that the glasses had good suitability for laser and amplifier applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Gehan T. El-Bassyouni, Amira M. El-Rafei, Moenis A. Azooz, Sayed H. Kenawy, Hussein Darwish, Esmat M. A. Hamzawy
Summary: Calcium silicate/calcium hexaboride composites were prepared using the wet precipitation chemical method. After heat treatment, high quartz, calcium silicate, and calcium hexaboride were detected as phases. When soaked in SBF, the samples showed the formation of nano-sized calcium phosphate particles. The analysis confirmed the biocompatibility of the prepared composites.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
H. M. Elsaghier, M. A. Azooz, Nehad A. Zidan, W. Abbas, Aly Okasha, S. Y. Marzouk
Summary: Alkaline earth titanium borate glasses doped with various ratios of Er3+ ions were fabricated and studied for their density, spectral characteristics, intensity parameters, etc. The results show that erbium doped glasses exhibit high laser efficiency and potential for photonic applications.
Article
Chemistry, Multidisciplinary
Islam E. Kotb, Aly Okasha, Samir Y. Marzouk, Nehad A. Zidan
Summary: In this paper, a neodymium doped Lead-Borate-Strontium-Tungsten glass system was synthesized and its properties were investigated. The density and molar volume of the glass increased with increasing concentration of neodymium ions. Spectroscopic measurements revealed structural modifications and vibrational characteristics of the glass system. The suitability of the glass for photonic applications was confirmed based on the obtained spectroscopic quality factor.
RESULTS IN CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
S. Y. Marzouk, H. M. Elsaghier, W. Abbas, Nehad A. Zidan, M. A. Azooz
Summary: Cadmium sodium phosphate glasses doped with ytterbium ions were investigated in terms of their structural changes, optical absorption spectra, emission cross-sections, and gain spectra for laser and amplifier applications.
RESULTS IN CHEMISTRY
(2022)
