In Situ Characterization of Laser Ablation by Pulsed Photoacoustics: The Case of Organic Nanocrystal Synthesis

Synthesis of silver nanoparticles by laser ablation in ethanol: A pulsed photoacoustic study

“…• Laser pulses parameters: wavelength [25], number of pulses [26] and fluence [27][28][29]. • Colloid parameters: nanoparticles material [30], nanoparticles concentration [29,31], nanoparticles size [10,29,31], colloid temperature [10,31,32] and the properties of the liquids [31,32].…”

“…The PA technique has been used to study different laser-matter interactions processes in liquids, such as: ablation of solids immersed in liquids [27], the formation of organic nanocrystals during the irradiation of microcrystals [26], the microbubbles systems dynamics [34,36], the formation and evolution of nanobubbles around nanoparticles [29], shock waves generated by the implosion of the cavitation bubble [33,37], the measurement of acoustic speed and thermal-acoustic transformation coefficient of an absorbing liquid [35].…”

“…For fluences just above a certain threshold, the temperature of the NPs can exceed the boiling temperature of the surrounding host liquid. Thus, a vapor layer appears on the surface of the NP, which rapidly expands generating PA signals [10,26,[28][29][30][31]38]. In the case of NPs fabrication the ablation process originates the PA effect.…”