Nonlinearity enhancement of Multi-walled carbon nanotube decorated with ZnO nanoparticles prepared by laser assisted method

Alkallas, Fatemah H.; Ahmed, Hoda A.; Pashameah, Rami Adel; Alrefaee, Salhah H.; Toghan, Arafat; Trabelsi, Amira Ben Gouider; Mostafa, Ayman M.

doi:10.1016/j.optlastec.2022.108444

Cited by 21 publications

(10 citation statements)

References 44 publications

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“…Существует возможность пришивки к ОУНТ различных молекул, в частности, фталоцианинов [30] для повышения нелинейного оптического ослабления за счет совокупного действия нескольких механизмов, приводящих к увеличению суммарного ослабления. Для достижения таких результатов проводились исследования ОУНТ, декорированных наночастицами [31,32] или функционализированных молекулами красителей [30,33]. Стоит отметить, что такого рода наногибриды должны образовывать устойчивые к седиментации дисперсии, и эта проблема остается в центре внимания и по сей день [34].…”

Section: материалы и их спектральные исследованияunclassified

“…При проведении измерений по методу Z-сканирования с открытой диафрагмой использовалась схема, описанная ранее [3,31]. Произведено исследование дисперсий исходных ОУНТ (рис.…”

Section: измерения нормированного пропускания по методу Z-сканировани...unclassified

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Ограничение Мощности Лазерного Излучения Углеродными Материалами С Нелинейным Оптическим Пороговым Эффектом При Форме Импульса С Плоской Вершиной

Савельев¹,

Василевский²,

Шаман³

et al. 2023

Журнал Технической Физики

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The possibilities of using multivariate determination of carbon nanotubes properties based on the dependence data of the normalized transmission logarithm on the sample displacement in the case of Z-scan with an open aperture as well as on the total pulse energy in the case of fixed sample position measurements are studied. The radiation transfer equation for the threshold dependence of the absorption coefficient on the intensity of a flat-top laser beam is used. The data of physical and computational experiments showed the sensitivity of the measured curves with respect to the values of the constants of the optical and threshold energy fluence, as well as the beam waist radius. The possibility of multivariate determination of the properties of liquid carbon nanotube-based dispersed media with a nonlinear optical threshold effect and beam waist radius inside such samples has been established.

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Section: материалы и их спектральные исследованияunclassified

Section: измерения нормированного пропускания по методу Z-сканировани...unclassified

Ограничение Мощности Лазерного Излучения Углеродными Материалами С Нелинейным Оптическим Пороговым Эффектом При Форме Импульса С Плоской Вершиной

Савельев¹,

Василевский²,

Шаман³

et al. 2023

Журнал Технической Физики

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“…The unit cell can be either rhombohedral trigonal (а = 5.49 Å, α = 55°52) or hexagonal (а = 5.14 Å, c = 13.86 Å, c/a = 2.693) with six formula units per unit cell [4][5][6]. Since nanostructured materials are indeed a central feature in photonic applications and technology, for example, the values of the (PBG) photonic bandgap nanostructures create new potentials, controlling the propagation of light and, as a result, creating novel photonic components [7][8][9]. From a material standpoint, the morphology of the nanocrystalline LiNbO 3 is very effective and important because it has optical characteristics that differ from those of semiconductors.…”

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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“…Additionally, ZnO has great piezoelectric properties and exceptional chemical stability due to its impressive semiconductor performance. Over the past few decades, ZnO thin films have been the subject of substantial research [ 5 , 6 , 7 , 8 ]. It has a number of clearly stated benefits, including being affordable, plentiful, safe to use, chemically stable, very transparent in the visible and near-infrared spectral area, ecologically benign, and highly catalytic.…”

Section: Introductionmentioning

confidence: 99%

Ag/ZnO Thin Film Nanocomposite Membrane Prepared by Laser-Assisted Method for Catalytic Degradation of 4-Nitrophenol

et al. 2022

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Zinc oxide thin film (ZnO thin film) and a silver-doped zinc oxide nanocomposite thin film (Ag/ZnO thin film) were prepared by the technique of the pulsed laser deposition at 600 °C to be applicable as a portable catalytic material for the removal of 4-nitrophenol. The nanocomposite was prepared by making the deposition of the two targets (Zn and Ag), and it was analyzed by different techniques. According to the XRD pattern, the hexagonal wurtzite crystalline form of Ag-doped ZnO NPs suggested that the samples were polycrystalline. Additionally, the shifting of the diffraction peaks to the higher angles, which denotes that doping reduces the crystallite size, illustrated the typical effect of the dopant Ag nanostructure on the ZnO thin film, which has an ionic radius less than the host cation. From SEM images, Ag-doping drastically altered the morphological characteristics and reduced the aggregation. Additionally, its energy band gap decreased when Ag was incorporated. UV spectroscopy was then used to monitor the catalysis process, and Ag/ZnO thin films had a larger first-order rate constant of the catalytic reaction K than that of ZnO thin film. According to the catalytic experiment results, the Ag/ZnO thin film has remarkable potential for use in environmentally-favorable applications.

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Nonlinearity enhancement of Multi-walled carbon nanotube decorated with ZnO nanoparticles prepared by laser assisted method

Cited by 21 publications

References 44 publications

Ограничение Мощности Лазерного Излучения Углеродными Материалами С Нелинейным Оптическим Пороговым Эффектом При Форме Импульса С Плоской Вершиной

Ограничение Мощности Лазерного Излучения Углеродными Материалами С Нелинейным Оптическим Пороговым Эффектом При Форме Импульса С Плоской Вершиной

Preparation of LiNbO₃ nanoparticles by green synthesis laser ablation in water

Ag/ZnO Thin Film Nanocomposite Membrane Prepared by Laser-Assisted Method for Catalytic Degradation of 4-Nitrophenol

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Nonlinearity enhancement of Multi-walled carbon nanotube decorated with ZnO nanoparticles prepared by laser assisted method

Cited by 21 publications

References 44 publications

Ограничение Мощности Лазерного Излучения Углеродными Материалами С Нелинейным Оптическим Пороговым Эффектом При Форме Импульса С Плоской Вершиной

Ограничение Мощности Лазерного Излучения Углеродными Материалами С Нелинейным Оптическим Пороговым Эффектом При Форме Импульса С Плоской Вершиной

Preparation of LiNbO3 nanoparticles by green synthesis laser ablation in water

Ag/ZnO Thin Film Nanocomposite Membrane Prepared by Laser-Assisted Method for Catalytic Degradation of 4-Nitrophenol

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Preparation of LiNbO₃ nanoparticles by green synthesis laser ablation in water