Physical Investigations of Niobium Oxide Nanorod Imploring Laser Radiation

Mahdi, Rana O.; Fakhri, Makram A.; Salim, Evan T.

doi:10.4028/www.scientific.net/msf.1002.211

Cited by 22 publications

(3 citation statements)

References 56 publications

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“…Table 3 illustrates the grain size, dislocation densities, Miller indices, and micro strains of Ag–WO 3 nanoparticles. The Scherrer formula is used to calculate the size of crystallites 125 – 127 : where λ is the X-ray wavelength, β is the full width at the half maximum, k is the constant 0.89 < k < 1 change with Miller indices and crystallite shape, but is frequently close to 0.94, and θ is the diffraction angle 128 – 130 . The dislocation density was calculated using the formula ( 3 ) and the Microstrains were determined using Eq.…”

Section: Resultsmentioning

confidence: 99%

Mesoporous Ag@WO3 core–shell, an investigation at different concentrated environment employing laser ablation in liquid

Salim,

Saimon,

Muhsin

et al. 2024

Sci Rep

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In this study, silver-tungsten oxide core–shell nanoparticles (Ag–WO3 NPs) were synthesized by pulsed laser ablation in liquid employing a (1.06 µm) Q-switched Nd:YAG laser, at different Ag colloidal concentration environment (different core concentration). The produced Ag–WO3 core–shell NPs were subjected to characterization using UV–visible spectrophotometry, X-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive spectroscopy, electrical analysis, and photoluminescence PL. The UV–visible spectra exhibited distinct absorption peaks at around 200 and 405 nm, which attributed to the occurrence of surface Plasmon resonance of Ag NPs and WO3 NPs, respectively. The absorbance values of the Ag–WO3 core–shell NPs increased as the core concentrations rose, while the band gap decreased by 2.73–2.5 eV, The (PL) results exhibited prominent peaks with a central wavelength of 456, 458, 458, 464, and 466 nm. Additionally, the PL intensity of the Ag–WO3-NP samples increased proportionally with the concentration of the core. Furthermore, the redshift seen at the peak of the PL emission band may be attributed to the quantum confinement effect. EDX analysis can verify the creation process of the Ag–WO3 core–shell nanostructure. XRD analysis confirms the presence of Ag and WO3 (NPs). The TEM images provided a good visualization of the core-spherical shell structure of the Ag–WO3 core–shell NPs. The average size of the particles ranged from 30.5 to 89 (nm). The electrical characteristics showed an increase in electrical conductivity from (5.89 × 10−4) (Ω cm)−1 to (9.91 × 10−4) (Ω cm)−1, with a drop in average activation energy values of (0.155 eV) and (0.084 eV) at a concentration of 1.6 μg/mL of silver.

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Section: Resultsmentioning

confidence: 99%

Mesoporous Ag@WO3 core–shell, an investigation at different concentrated environment employing laser ablation in liquid

Salim,

Saimon,

Muhsin

et al. 2024

Sci Rep

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“…Because of its excellent piezoelectric, electrooptic, non-linear optical, and acousto-optic properties [10][11][12], LN is regarded as a crucial ferroelectric material that is widely used in optical switches, optical telecommunications, and second harmonic generation imaging probes [13][14][15]. Nanomaterials of lithium niobate have been prepared by various methods, for instance, sputtering [16][17][18], molecular beam epitaxy (MBE) [19][20][21], MOCVD [22][23][24], sol-gel method [25][26][27], spin coating [28][29][30], PLD [31][32][33], wet-chemical [34][35][36], and solution-phase [37][38][39]. Due to its simplicity, cost-effectiveness, one-step process, lack of catalyst requirements, high purity, and good control over the size and morphology of the nanoparticles, laser ablation of nanoparticles in a liquid medium is considered one of the most interesting and promising routes [40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Preparation of LiNbO₃ nanoparticles by green synthesis laser ablation in water

Alwazny,

Ismail,

Salim

2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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The use of LiNbO3 nanoparticles in nonlinear applications is attractive and promising. The particle size and morphology of LiNbO3 are the key parameters affecting their application. In this study, spherical nanoparticles of lithium niobate were synthesised by nanosecond Nd:YAG laser ablation in water. The polycrystalline, rhombohedral structure of the synthesised LiNbO3 nanoparticles with x-ray diffraction experiments was verified. The bandgap energy of colloidal LiNbO3 nanoparticles varied between 4.25 and 4.9 eV based on the laser fluence, according to the optical characteristics. The photoluminescence (PL) reveals that the emission peaks are centered at 293, 300, 305, and 309 nm for samples prepared at 1.3, 1.6, 2.0, and 2.2 J cm−2/pulse, respectively. The transmission electron microscope investigation confirmed the formation of spherical nanoparticles with an average size ranging from 18 to 34 nm. Raman studies on nanoparticles synthesised at various laser fluences are being conducted.

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“…Starting from the 1970s up to now, LiNbO3 has been widely employed for the fabrication of many devices [19][20][21]. In addition, for the optical based technologies LiNbO3 represents one of the key materials [22,23]. Due to it are unique properties and being ferroelectric material that makes it a suitable for various optical applications [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Using the PLD Method: Investigation of the Influence of Laser Wavelengths on the Optical Morphological and Structural Findings of LiNbO<sub>3</sub> Nano-Photonic Films

Salim

Mahmood

Khalid

et al. 2022

DDF

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For the optoelectronics application like (optical waveguides), a nanostructure Lithium Niobate (LiNbO3) Nano film was produced and placed on a quartz substrate using the pulse laser deposition (PLD) process. The structural, morphological, and optical features of wavelengths od pulsed laser (1064 and 532) nm were investigated for the films of LiNbO3 Scanning Electron Microscope (SEM), X-Ray Diffraction (XRD), Ultra-Violet (UV-Vis) spectrophotometer, and Atomic Force Microscopy (AFM) are among the techniques used to describe and evaluate the samples.

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Physical Investigations of Niobium Oxide Nanorod Imploring Laser Radiation

Cited by 22 publications

References 56 publications

Mesoporous Ag@WO3 core–shell, an investigation at different concentrated environment employing laser ablation in liquid

Mesoporous Ag@WO3 core–shell, an investigation at different concentrated environment employing laser ablation in liquid

Preparation of LiNbO₃ nanoparticles by green synthesis laser ablation in water

Using the PLD Method: Investigation of the Influence of Laser Wavelengths on the Optical Morphological and Structural Findings of LiNbO<sub>3</sub> Nano-Photonic Films

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Physical Investigations of Niobium Oxide Nanorod Imploring Laser Radiation

Cited by 22 publications

References 56 publications

Mesoporous Ag@WO3 core–shell, an investigation at different concentrated environment employing laser ablation in liquid

Mesoporous Ag@WO3 core–shell, an investigation at different concentrated environment employing laser ablation in liquid

Preparation of LiNbO3 nanoparticles by green synthesis laser ablation in water

Using the PLD Method: Investigation of the Influence of Laser Wavelengths on the Optical Morphological and Structural Findings of LiNbO<sub>3</sub> Nano-Photonic Films

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Preparation of LiNbO₃ nanoparticles by green synthesis laser ablation in water