Spectroscopic and structural properties of zinc oxide nanosphere as random laser medium

Haider, Adawiya J.; Sultan, Fatima I.; Haider, Mohammed J.; Hadi, Naseer M.

doi:10.1007/s00339-019-2529-5

Cited by 29 publications

(12 citation statements)

References 42 publications

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“…The results reveal that there is a red shift for all samples. The shift is due to the change in the energy of the lowest unoccupied molecular orbital (LUMO) of the ligand that causes the π-π* and dπ-π* transitions to occur at a lower energy [21]. This result is in agreement with [22,23].…”

Section: Resultssupporting

confidence: 63%

Impact of PS/PMMA Polymer Ratios with Nanocomposite Material on Optical and Morphological Properties

Haider

Al-Shibaany

Hawy

et al. 2020

ZJMT

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In this work, nanocomposite material consisting of titanium dioxide (TiO2) nanoparticles and rhodamine 6G (R6G) laser dye was doped with different ratios of polystyrene (PS) and polymethylmethacrylate (PMMA) polymer blends (i.e. 40% PS/60% PMMA and 50% PS/50% PMMA) using the casting method. The optical properties of the prepared samples were measured using UV-visible spectroscopy. These measurements include the calculations of the absorption (A%), absorption coefficient (α), energy gap (Eg), refractive index (n), extinction coefficient (K) and real and imaginary parts. These nanocomposite materials were investigated using a scanning electron microscope and photoluminescence (PL) spectra emission. The SEM results show that the optimum results were at 50% PS/50% PMMA/TiO2/R6G with all the dye being decorated in the process blend, while the TiO2 nanoparticle demonstrated that the pores were incomplete in some places and complete in others. The optical results show that there are red shifts in all absorption peaks caused by the increased PS ratio. The Eg decreased from 3.2 eV to 2.8 eV as the concentration of PS in the polymer matrix increased. The PL spectrum for the nanocomposites, with a different ratio of PS, shows that sharp peaks of PL emission occur at a wavelength of 570 nm and shift towards longer wavelengths with an increased PS%.

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Section: Resultssupporting

confidence: 63%

Impact of PS/PMMA Polymer Ratios with Nanocomposite Material on Optical and Morphological Properties

Haider

Al-Shibaany

Hawy

et al. 2020

ZJMT

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“…The gures present an average size of 52.37 nm for the prepared NPs. In comparison, Figure 6b revealed the diameter sizes of 187.8 nm for the prepared Fe 3 O 4 @Au-CS-CU-Fol NPs [31][32].…”

Section: Chemical Composition and Electron Microscopy Of Core-shell F...mentioning

confidence: 94%

Formulation of Curcumin in Folate Functionalized Polymeric Coated Fe3O4@Au Core-Shell Nanosystem for Targeting Breast Cancer Therapy

Haider

Al-Musawi²,

Haider³

et al. 2022

Preprint

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This research aims to design and synthesize a drug contained nanocomposite papered with a new combination of chitosan (CS)-coated magnetic-gold core-shell (Fe3O4@Au) as curcumin (CU) delivery to treat breast cancer (MDA-MB-231) and normal (MCF10A) cell lines. The CU drug was encapsulated in this nanosystem. Folate (Fol) functionalization of this nanosystem for targeting therapy purposes led to the construction of the final Fe3O4@Au-CS-CU-Fol nanoformulation. The SPION@Au was achieved using Pulsed Laser Ablation in Liquid (PLAL) procedure by the 530 nm wavelength with various laser fluence (1.8, 2.3, and 2.6) J/cm2. The polymeric coating, drug encapsulation, and Fol functionalization processes were performed due to reverse microemulsion methods. This nanosystem was characterized by a dynamic light scattering (DLS) Atomic Force Microscope (AFM), Field Emission Scanning Electron Microscopy (FESEM), High-Resolution Transmission Electron Microscopy (HRTEM), UV-Visible spectrophotometer, and vibrating sample magnetometry (VSM). A new type of CU-loaded nanocarrier was synthesized, and its anti-tumor properties were evaluated against breast cancer cell lines in both in vitro and in vivo conditions. The obtained mean size of Fe3O4@Au nanoparticles (NPs) was 52.37, 60.24, and 72.45 nm at 1.8, 2.3, and 2.6 J/cm2, respectively. The MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay of drug-loaded NPs on the MDA-MB-231 cell line proved that the CU cytotoxicity effect could enhance when encapsulated in Fe3O4@Au-CS-Fol nanocarrier compared with void CU. On the other hand, the flow cytometry charts presented that this nanoformulation can enhance the remedial properties of CU due to apoptosis stimulation in the MDA-MB-231 cell line. The real-time polymerase chain reaction (PCR) analysis confirmed the activation of apoptosis in the cells treated with the Fe3O4@Au-CS-CU-Fol. The in vivo evaluation of the Fe3O4@Au-CS-CU-Fol nanosystem proved that the tumor volume reduces in a certain time. Close inspection of results confirmed that Fe3O4@Au-CS-CU-Fol exerts a significant chemo-preventive effect on breast cancer through cell viability index, apoptosis stimulation, and anti-tumor activity.

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“…9 [56]). Construction of extremely sensitive gradiometers, magnetometers, and voltmeters are among the other uses [57,58]. Scientific research: -Today's cutting-edge scientific research facilities are testing the boundaries of human understanding and investigating discoveries that may lead to new techniques ranging from nuclear fusion's clean, plentiful energy to computing at speeds far faster than silicon technology's theoretical limit.…”

Section: Superconducting Quantum Interference Devices (Squid)mentioning

confidence: 99%

“…These nanoparticles are distinguished from bulk materials by their distinct properties, including their small size, specific chemical composition, surface structure, chemical response, high electrical conductivity, strong magnetism, optical effects, and mechanical strength. These distinguishing characteristics have aided the development of modern systems and devices that may be employed in a wide range of applications [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Superconductor Materials Doped with Nanoparticles on Their Properties: Review Article

Kadhim¹,

Hasan²,

Haider³

2022

JASN

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Revolutionary developments have been started in the field of superconductors since their discovery.High-temperature superconductors have been a focus of attention in advanced technology for many scientists because of their potential applications. Therefore, many changes are made in the products that use such materials. It remains one of the most exciting research fields and can revolutionize the physics and technology of the future. It is required to understand and learn the history and basic principles of Superconductivity for its better implications. Considering its recent discoveries, its current applications can be studied. The mechanism of 'HTS' is much easier to understand after the significant development made in the field of Superconductivity. The purpose of this work is to better understand and appreciate research in the field of Superconductors. Basically, HTS has been used in many areas, but much progress is needed. HTS can be used in optoelectronics technologies and countless other applications after the effects seen by such improvements. In particular, this review focuses on the hightemperature BSCCO compound and its manufacture by the Solid-State reaction method and the PLD technique, which could be useful to electronics technology, particularly optoelectronic devices applications. Superconducting electronics devices have a lot of promise for future high-efficiency optoelectronics.

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Spectroscopic and structural properties of zinc oxide nanosphere as random laser medium

Cited by 29 publications

References 42 publications

Impact of PS/PMMA Polymer Ratios with Nanocomposite Material on Optical and Morphological Properties

Impact of PS/PMMA Polymer Ratios with Nanocomposite Material on Optical and Morphological Properties

Formulation of Curcumin in Folate Functionalized Polymeric Coated Fe3O4@Au Core-Shell Nanosystem for Targeting Breast Cancer Therapy

Characterization of Superconductor Materials Doped with Nanoparticles on Their Properties: Review Article

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