Influence of Laser Energies on Tin Oxide Nanoparticles Plasma Parameters Prepared by Nd:YAG Laser

Khalaf, Madyan A.; Hmood, Wasnaa

doi:10.37575/b/sci/0009

Cited by 3 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Where Δλ: The Lorentzian FWHM of line, 𝜔: The Stark broadening parameter, Nr: The standard electron density equals (10 16 cm 3 ) for the neutral atoms and (10 17 cm 3 ) for the singly charged ions [20,21].…”

Section: Theoretical Methodologymentioning

confidence: 99%

Spectroscopic and Structural Analysis of Aluminum Bulk and Nanoparticles: A Comparative Study

Fadhil¹,

Salih²,

Hassoon³

2022

JASN

View full text Add to dashboard Cite

In the present work, Laser Induced Breakdown Spectroscopy (LIBS) has been utilized to investigate two forms of aluminum samples, namely Al in the form of the nanoparticles (NPs) and a bulk (pellet). The Al target was irradiated by pulsed Nd-YAG laser with wavelength 1064 nm to produce plasma. The plasm spectrum is analyzed in the wavelength range between 250 nm and 700 nm. Some plasma parameters were calculated, including electron temperature (𝑇 𝑒 ), plasma density (ne) and Debye length (𝜆 𝐷 ) for different laser energies. The temperature of electrons was computed employing the Boltzmann plot technique, and the electrons density was computed utilizing the Stark broadening technique. This work aims to investigate the effect of laser energy on the plasma parameters and the influence of using two different forms of targets on these parameters. It was noted that increasing the laser energy from (400 mJ) to (700 mJ) resulted in an increase in electrons temperature from (0.52 eV) to (0.65 eV) and an increase in electron density from (57.38×10 16 cm -3 ) to (67×10 16 cm -3 ) for the nano aluminum plasma, whereas the electrons temperature increased from (0.52 eV) to (0.59 eV) and the electron density increased from (43.88×10 16 cm -3 ) to (55.05×10 16 cm -3 ) for the bulk aluminum plasma. From the obtained results, it's concluded that using identical laser energies, the electron temperature and electron density of the plasma generated from aluminum in the form of nanoparticles are greater than that generated from aluminum in the bulk form. The differences in the calculated parameters for Al NPs and Al bulk belong to their different structures and morphologies as presented via Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) methods.

show abstract

Section: Theoretical Methodologymentioning

confidence: 99%

Spectroscopic and Structural Analysis of Aluminum Bulk and Nanoparticles: A Comparative Study

Fadhil¹,

Salih²,

Hassoon³

2022

JASN

View full text Add to dashboard Cite

show abstract

“…Also, this activity was due to the transfer of laser thermal energy to electron kinetic energy because of the rising forward peak of laser energy with a steady laser spot duration. The Saha-Boltzmann equation of the emitted species (Khalaf and Hmood 2020)The expression used for electron density calculation is:…”

Section: Electron Temperature (T E ) and Electron Number Density (N E ) Diagnosticsmentioning

confidence: 99%

Spectroscopic Investigation of Laser-Induced Graphene Plasma

Khalaf¹

2021

BAS-SJKFU

Self Cite

View full text Add to dashboard Cite

In this paper, graphene plasma was obtained through the interaction of the fundamental radiation from a pulsed Nd:YAG laser at the fundamental wavelength of 1064 nm focused onto a solid plane of graphene material. This reaction was carried out under conditions of an atmospheric status. The resulting plasma was tested using an optical emission spectroscopy technique. The temperature of the electrons is calculated by the tow line ratio of C I and C II emission lines singly ionised, and the density of the plasma electron is calculated with Saha-Boltzmann equation. The upper limit of the electron temperature was approximately 1.544 eV. The corresponding electron density was 11.5×1015 cm-3. Then the electron temperature decreased when the energy was 300 mJ and it was near 1.462 eV, corresponding to the density of those electrons 8.7×1015 cm-3.

show abstract

Irradiation with cold atmospheric direct plasma: an innovative approach to treating murine cutaneous wounds

Ahmed,

Al-Sharqi,

Khalaf

2024

Preprint

View full text Add to dashboard Cite

Cold atmospheric direct plasma (CADP), an ionized gas at ambient temperature, represents a promising approach to enhancing tissue regeneration. A laboratory-based study was conducted to investigate the effects of medical CADP on the reparative potential of full-thickness acute skin wounds in murine models. For the in vivo investigations, two full-thickness dermal injuries were induced in each murine subject, each with a diameter of approximately 8 mm (n = 20). We employed a floating electrode within a CADP system that generates atmospheric pressure air plasma, characterized by a plasma temperature ranging from 36 to 38°C. The dermal wounds received three plasma treatments, administered twice daily for irradiation durations of 5, 15, and 25 seconds. These wounds were subsequently evaluated at intervals of 2, 4, 6, 8, and 11 days post-wounding through histological examination and gene expression analysis. On the eleventh day, the wound healing rates were recorded at 34.80% for the control group, while the plasma-treated groups achieved rates of 56.62%, 84.97%, and 97.82%, respectively. Histological examination revealed that plasma-treatment promotes the development of epidermal keratin and granular strata, along with the formation of hair follicles and sebaceous glands. Gene expression analysis indicates increased levels of growth factors and a decrease in white blood cell counts. CADP therapeutic intervention has significantly enhanced the healing efficacy of acute dermatological lesions without any noticeable adverse effects or the simultaneous activation of pro-inflammatory signaling pathways. These findings underscore the benefits of employing plasma applications for wound management in clinical settings.

show abstract

Influence of Laser Energies on Tin Oxide Nanoparticles Plasma Parameters Prepared by Nd:YAG Laser

Cited by 3 publications

References 10 publications

Spectroscopic and Structural Analysis of Aluminum Bulk and Nanoparticles: A Comparative Study

Spectroscopic and Structural Analysis of Aluminum Bulk and Nanoparticles: A Comparative Study

Spectroscopic Investigation of Laser-Induced Graphene Plasma

Irradiation with cold atmospheric direct plasma: an innovative approach to treating murine cutaneous wounds

Contact Info

Product

Resources

About