Effects of water depth and laser pulse numbers on size properties of colloidal nanoparticles prepared by nanosecond pulsed laser ablation in liquid

Mahdieh, Mohammad Hossein; Fattahi, Behzad

doi:10.1016/j.optlastec.2015.07.006

Cited by 24 publications

(9 citation statements)

References 23 publications

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“…Furthermore, predominantly produced nanoparticles absorb a considerable portion of the laser pulse energy, resulting in nanoparticle size reduction. The size reduction of NPs is caused by the absorption of heat, which raises the temperature of the particles, causing melting and cooling 56 . When the temperature of a gold particle reaches its boiling point, atoms and tiny particles are expelled by vaporization.…”

Section: Resultsmentioning

confidence: 99%

Green synthesis of gold nanoparticles in Gum Arabic using pulsed laser ablation for CT imaging

Mzwd

Ahmed

Suradi

et al. 2022

Sci Rep

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Laser ablation synthesis in liquid solution (PLAL) is a green technique that allows for the physical formation of nanomaterials. This study indicates the preparation of stable gold nanoparticles (AuNPs) in Gum Arabic (GA) solution via laser ablation as a CT contrast agent. The optical properties were achieved using the absorption spectroscopic technique whereas the morphology and size distribution were investigated by TEM and ImageJ software. TEM image shows greater stability and spherical shape of GA-AuNPs with smaller size at 1.85 ± 0.99 nm compared to AuNPs without GA. The absorption spectrum of pure AuNPs has a lower absorption peak height in the visible range at λ = 521 nm, while the spectrum of GA-AuNPs has a higher plasmon peak height at λ = 514 nm with a blue shift towards lower wavelengths. The concentration of GA that dissolved in 10 mL of DI water via laser ablation is set at 20 mg. Increasing the number of pulses has only a minor effect on particle size distribution, which remains tiny in the nanometer range (less than 3 nm). For energies greater than 200 mJ, there is a blue shift toward shorter wavelengths. As the concentration of GA-AuNPs increases, the CT number is also increased indicating good image contrast. It can be concluded that there is a positive and significant influence of GA as a reducing agent for AuNPs, and a contrast agent for CT imaging which highlights its superiority in future medical applications.

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Section: Resultsmentioning

confidence: 99%

Green synthesis of gold nanoparticles in Gum Arabic using pulsed laser ablation for CT imaging

Mzwd

Ahmed

Suradi

et al. 2022

Sci Rep

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“…Esto sugiere que, para las condiciones de síntesis consideradas en este trabajo, incrementar el número de pulsos láser conllevó a disminuir el ancho de la distribución de tamaños. Se ha reportado que un aumento del número de pulsos láser considerados para la síntesis de nanopartículas metálicas en agua destilada puede conllevar a una reducción en el ancho de la distribución de tamaños [30].…”

Section: Resultados Y Discusiónunclassified

Síntesis Y Modificación De Coloides Con Nanopartículas De Plata Por Ablación Láser en Agua Desionizada.

Rivera-Esteban¹,

Valverde-Alva

Aldama-Reyna

2019

Momento

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Coloides con nanopartículas esféricas de plata fueron obtenidos por la técnica de ablación con láser pulsado en líquidos. Los parámetros del láser para la síntesis fueron: longitud de onda de 1064 nm, duración de pulso láser de 10 ns, energía por pulso de 15.7 mJ, 2400, 3600 y 4800 pulsos láser. La radiación láser infrarroja fue enfocada por una lente convergente sobre la superficie de un blanco de plata sumergido en agua desionizada. Para la síntesis de los coloides se utilizó el modo de disparo manual de láser. Cada coloide sintetizado (muestra referencia) fue post irradiado con el mismo láser considerado para la síntesis, pero con energía incidente de 8.3 mJ. Para la post irradiación se consideró una razón de repetición de 10 Hz y diferentes números de pulsos. Durante la post irradiación, el rompimiento óptico del coloide se produjo a mitad de altura del mismo. La caracterización de los coloides se realizó con las técnicas de espectroscopia ultravioleta-visible y microscopia electrónica de barrido. Las curvas para el máximo de absorción y la integral del espectro de absorción en el intervalo correspondiente al infrarrojo cercano (desde 600 nm a 800 nm) sugieren que conforme se incrementó el número de pulsos láser considerados para la post irradiación de una muestra referencia, se presentó: ablación y fragmentación denanopartículas hasta un tamaño crítico, agregación, aglomeración y sedimentación de nanopartículas. Se encontró una dependencia entre las propiedades ópticas de nanopartículas de plata con las condiciones de síntesis y post irradiación de coloides con láser pulsado y enfocado.

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“…Another study reported that liquid media volume used to immerse the target metal does not affect the ablation duration and physiochemical property of gold nanoparticle with respect to morphology, structure and its function [ 5 , 7 ]. These findings were proven in the fabrication of gold nanoparticles and other nanoalloys such as argentum (Ag), stannic oxide and silicon [ 3 , 40 , 41 , 42 ] via the PLAL technique. In addition, with the use of a small amount of liquid media and gold target, the number of gold nanoparticles obtained did not exceed 10 −4 g [ 5 ].…”

Section: The Plal Synthetisation Methodsmentioning

confidence: 99%

State of the Art in Gold Nanoparticle Synthesisation via Pulsed Laser Ablation in Liquid and Its Characterisation for Molecular Imaging: A Review

2022

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With recent advances in nanotechnology, various nanomaterials have been used as drug carriers in molecular imaging for the treatment of cancer. The unique physiochemical properties and biocompatibility of gold nanoparticles have developed a breakthrough in molecular imaging, which allows exploration of gold nanoparticles in drug delivery for diagnostic purpose. The conventional gold nanoparticles synthetisation methods have limitations with chemical contaminations during the synthesisation process and the use of higher energy. Thus, various innovative approaches in gold nanoparticles synthetisation are under development. Recently, studies have been focused on the development of eco-friendly, non-toxic, cost-effective and simple gold nanoparticle synthesisation. The pulsed laser ablation in liquid (PLAL) technique is a versatile synthetic and convincing technique due to its high efficiency, eco-friendly and facile method to produce gold nanoparticle. Therefore, this study aimed to review the eco-friendly gold nanoparticle synthesisation method via the PLAL method and to characterise the gold nanoparticles properties for molecular imaging. This review paper provides new insight to understand the PLAL technique in producing gold nanoparticles and the PLAL parameters that affect gold nanoparticle properties to meet the desired needs in molecular imaging.

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Effects of water depth and laser pulse numbers on size properties of colloidal nanoparticles prepared by nanosecond pulsed laser ablation in liquid

Cited by 24 publications

References 23 publications

Green synthesis of gold nanoparticles in Gum Arabic using pulsed laser ablation for CT imaging

Green synthesis of gold nanoparticles in Gum Arabic using pulsed laser ablation for CT imaging

Síntesis Y Modificación De Coloides Con Nanopartículas De Plata Por Ablación Láser en Agua Desionizada.

State of the Art in Gold Nanoparticle Synthesisation via Pulsed Laser Ablation in Liquid and Its Characterisation for Molecular Imaging: A Review

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