Collinear double pulse laser ablation in water for the production of silver nanoparticles

Abstract

Experiments of collinear Double Pulse Laser Ablation in Liquid (DP-LAL) were carried out for studying the production mechanisms of nanoparticles (NPs) in water, which revealed the fundamental role of the cavitation bubble dynamics in the formation of aqueous colloidal dispersions. In this work, DP-LAL was used to generate silver nanoparticles (AgNPs) from a silver target submerged in water at atmospheric pressure and room temperature, by using the second harmonic (532 nm) of two Nd:YAG lasers. The second laser pulse was shot at different delay times (i.e. interpulse delay) during the bubble temporal evolution of the first laser induced bubble. Optical Emission Spectroscopy, Shadowgraph Images, Surface Plasmon Resonance absorption spectroscopy and Dynamic Light Scattering were carried out to study the behaviour of laser-induced plasma and cavitation bubbles during the laser ablation in liquid, to monitor the generation of AgNPs under different conditions, and for characterization of NPs. The results of DP-LAL were always compared with the corresponding ones obtained with Single Pulse Laser Ablation in Liquid (SP-LAL), so as to highlight the peculiarities of the two different techniques.

Study of the Effect of Water Pressure on Plasma and Cavitation Bubble Induced by Pulsed Laser Ablation in Liquid of Silver and Missed Variations of Observable Nanoparticle Features

“…[12,18,25] It mainly consists of an sp ulsed laser (Quantasystem, PILS-GIANT,6 ns pulse duration) operating with the second harmonic (532 nm) and ar epetition rate of 10 Hz. [12,18,25] It mainly consists of an sp ulsed laser (Quantasystem, PILS-GIANT,6 ns pulse duration) operating with the second harmonic (532 nm) and ar epetition rate of 10 Hz.…”

Colloidal Metal Nanoparticles Prepared by Laser Ablation and their Applications

“…[37,38] The subsequente xpansion of this hot plasma was confined and quenched (or cooled)b yt he surrounding liquid medium, leading to the formation of the metal clusters. [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58] The thermale vaporation mechanism can be refined into several subsequents teps. [37,38] Yang et al also investigated the formation of AgNP-Ag 2 O 3 nanocompositesu sing the Nd:YAG laser (wavelength:5 32 nm;p ulse duration:1 0ns; powerd ensity: 1010 W·cm À2 )i na queous solution.…”

“…Continuous efforts from the experimental and theoretical aspects have thus been focused on the investigation of the detailedd ynamics of PLAL. Reviews measurement techniques, such as opticale mission spectroscopy,s mall angle x-ray scattering (SAXA), high-speed laser stroboscopic videography as well as fast shadowgraph, [40,41,44,45,47,50] brings more physicali nsights to the dynamics of the PLAL. Figure 1s ketchest he time sequenceo ft he NP formation via at hermale vaporation mechanism.…”

“…[52] e) PLAL-fabricated species in cavitationb ubble during its largest extension. [44] The dynamics of the laser-induced bubble and NP generation was also studied using femotosecond and picosecond lasers. face, as well as the formation of NPs with am olten-like structure.…”

Comparison of the overall temporal behavior of the bubbles produced by short- and long-pulse nanosecond laser ablations in water using a laser-beam-transmission probe

“…The laser-induced bubble repeats expansion and contraction in the scale of a few hundred microseconds, which can be well described by the Rayleigh-Plesset equation [5][6][7][8][9], while the plasma disappears in a few microseconds. The bubble dynamics is quite interesting for fundamental research, while it plays an important role for the underwater elemental analysis [10][11][12][13][14][15][16][17] and the synthesis of nanoparticles [18][19][20][21][22][23][24][25].…”