Influence of Magnetic Field on Silver Nanoparticles Synthesized by Laser Ablation

Abbas, Zahraa; Adnan, Qusay

doi:10.24996/ijs.2020.61.2.12

Cited by 7 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The added impurities may be associated with increased oxygen vacancies caused by the ZnO: Al lattice, which is the main factor in the gas sensing mechanism [30], [31]. Figures (9) and (10) illustrate the resistance variation of ZnO: Al0.3 wt% and ZnO: Al0.5 wt% samples prepared without and with the magnetic field, respectively, when exposed to 100 ppm concentration of H2S. The AZO-based sensors were tested at different working temperatures (150, 200, 250, and 300 °C).…”

Section: Resultsmentioning

confidence: 99%

“…The target properties highly affect the laser-induced nanostructures prepared by the PLD technique [11]. It was found experimentally that using an external magnetic field with the (PLD) technique improves the target ablation process and highly affects the formation of laserinduced nanostructures [10,12,13]. It was reported that applying a tangential magnetic field increases the surface morphology and growth rate of the formed material [14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of a Magnetic Field on the Structure, Morphology and Gas Sensing Characteristics of ZnO: Al Thin Films Prepared by Pulsed Laser Ablation

Abbas,

Abbas

2024

Iraqi Journal of Science

View full text Add to dashboard Cite

In this work, aluminium-doped zinc oxide (AZO) nanostructure at 0.3 wt% and 0.5 wt% Al was synthesized using the pulse-laser ablation technique in liquid(PLAL) using pulsed Nd: YAG laser of a fundamental wavelength of (1064 nm). The process was done in the absence and presence of an external magnetic field. The deposited AZO nanostructures by drop-casting on etched-Si wafers were examined by different techniques. The XRD test illustrates enhancing the crystallinity of the prepared thin films by applying an external magnetic field. The FESEM images displayed the change of nanostructure to nano-sheets of high surface area after using a 77.2 mT permanent magnet placed behind the target during the ablation process. The gas sensor based on the AZO nanostructures has higher sensitivity against NO2 than H2S. Increasing the Al ratio from 0.3 wt% to 0.5 wt% changed the properties of the prepared samples to have small porosity and small surface area, which negatively affected the properties of the sensor

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of a Magnetic Field on the Structure, Morphology and Gas Sensing Characteristics of ZnO: Al Thin Films Prepared by Pulsed Laser Ablation

Abbas,

Abbas

2024

Iraqi Journal of Science

View full text Add to dashboard Cite

show abstract

“…They observed that the particle size reduces significantly with an increase in the applied magnetic field and the formation of crystalline nanostructures. Similarly, for Ag NPs, a study was conducted by Abbas et al [171], who observed that the average diameter of the produced particles increased from 14 nm to 25 nm by applying a magnetic field. Similarly, Kim et al [172] observed in their study on Ag NPs that the plasma emission increases with the magnetic field.…”

Section: Magnetic Field-assisted Plalmentioning

confidence: 91%

Influence of Laser Process Parameters, Liquid Medium, and External Field on the Synthesis of Colloidal Metal Nanoparticles Using Pulsed Laser Ablation in Liquid: A Review

2022

View full text Add to dashboard Cite

Pulsed laser ablation in liquid, used for nanoparticle synthesis from solid bulk metal targets (a top-down approach), has been a hot topic of research in the past few decades. It is a highly efficient and ‘green’ fabrication method for producing pure, stable, non-toxic (ligand-free), colloidal nanoparticles, which is often challenging using traditional chemical methods. Due to the short time scale interaction between the laser pulses and the target, it is difficult to achieve complete control on the physical characteristics of metallic nanoparticles. Laser process parameters, liquid environment, and external fields vastly effect the shape and structure of nanoparticles for targeted applications. Past reviews on pulsed laser ablation have focused extensively on synthesising different materials using this technique but little attention has been given to explaining the dependency aspect of the process parameters in fine-tuning the nanoparticle characteristics. In this study, we reviewed the state of the art literature available on this technique, which can help the scientific community develop a comprehensive understanding with special insights into the laser ablation mechanism. We further examined the importance of these process parameters in improving the ablation rate and productivity and analysed the morphology, size distribution, and structure of the obtained nanoparticles. Finally, the challenges faced in nanoparticle research and prospects are presented.

show abstract

“…Laser-induced plasma can be confined by different techniques to enhance the plasma breakdown, such as magnetic confinement by applying an external field [37,38],…”

Section: √ ( )mentioning

confidence: 99%

Characterization of Magnetized-Plasma System Induced by Laser

Abbas,

Abbas

2023

IJP

View full text Add to dashboard Cite

This study investigated the effect of applying an external magnetic field on the characteristics of laser-induced plasma, such as its parameters plasma, magnetization properties, emission line intensities, and plasma coefficients, for plasma induced from zinc oxide: aluminum composite (ZO:AL) at an atomic ratio of 0.3 %. Plasma properties include magnetization and emission line intensities. The excitation was done by a pulsed laser of Nd:YAG with 400 mJ energy at atmospheric pressure. Both the electron temperature and number density were determined with the help of the Stark effect principle and the Boltzmann-Plot method. There was a rise in the amount of (ne) and (Te) that was produced by applying a magnetic field and, on the other hand, using the 532 nm wavelength rather than the fundamental wavelength of a laser. The emission lines in the atmosphere's plasma have an appearance of Lorentzian shape. The 532 nm laser exhibited a decrease in both the Larmor radius and the confinement factor compared with the 1064 nm laser. By applying the magnetic field, the Laser Induced Breakdown Spectroscopy (LIBS) intensities increased by 1.44 times when compared to the emissions before applying the field. In addition, the spectral line intensities improved with the fundamental wavelength compared to the second harmonic frequency as a result of the increase in the extracted materials. This is due to the increase in the absorbance of the laser by the target, as some of these materials are excited, so they act as emission sources, which makes them more detectable.

show abstract

Influence of Magnetic Field on Silver Nanoparticles Synthesized by Laser Ablation

Cited by 7 publications

References 16 publications

Influence of a Magnetic Field on the Structure, Morphology and Gas Sensing Characteristics of ZnO: Al Thin Films Prepared by Pulsed Laser Ablation

Influence of a Magnetic Field on the Structure, Morphology and Gas Sensing Characteristics of ZnO: Al Thin Films Prepared by Pulsed Laser Ablation

Influence of Laser Process Parameters, Liquid Medium, and External Field on the Synthesis of Colloidal Metal Nanoparticles Using Pulsed Laser Ablation in Liquid: A Review

Characterization of Magnetized-Plasma System Induced by Laser

Contact Info

Product

Resources

About