Modification of Rayleigh–Plesset Theory for Reproducing Dynamics of Cavitation Bubbles in Liquid-Phase Laser Ablation

Abstract

The solution of the conventional Rayleigh–Plesset equation did not agree with the experimental results on the temporal variations of the sizes of cavitation bubbles produced by laser ablation in water. In this work, we modified the conventional Rayleigh–Plesset theory in the following two points to reproduce the experimental observation theoretically. One was to introduce the effect of the contact angle among the water, the cavitation bubble, and the ablation target. The other was to treat the surface tension and the kinematic viscosity coefficient of water as additional adjusting parameters to fit the theoretical result with the experimental observation. The latter modification was effective especially for laser ablation in the pressurized water. Better agreement between the theoretical and the experimental results was realized with the help of these modifications, but anomalous thermodynamic parameters were necessary to obtain the best fitting. We evaluated the pressures and the temperatures inside the cavitation bubbles.

Cavitation bubble dynamics during pulsed laser ablation of a metallic glass in water

“…However, the precise solution of the simplified RP equation is still challenging. It usually requires the nucleation state of a bubble as additional adjusting parameters [8] or resorts to the experimental measurements [7,22]. Actually, the bubble nucleation originates from the fast evolution of laser-induced plasma, which has been confirmed experimentally [18,23].…”

“…This intriguing phenomenon has versa-tile applications ranging from nanoparticle synthesis [1,2], surface cleaning [3] to luminescence [4]. The dynamics of cavitation bubble is of central importance since it reflects the fundamental response of liquid-plasma-solid system to laser ablation, and thus has drawn increasing interest [5][6][7][8]. Usually, the conventional Rayleigh-Plesset (R-P) theory is modified to reproduce the ablation-induced bubble dynamics.…”

“…Usually, the conventional Rayleigh-Plesset (R-P) theory is modified to reproduce the ablation-induced bubble dynamics. It is demonstrated that the initial evolution of a bubble is adiabatic and driven by inertial forces [7], but its long-term dynamics should take into account the target's ablation and the energy or mass exchange from and to the bubble [8]. In recent years, the pulsed-laser-ablation technology http://dx.doi.org/10.1016/j.eml.2016.11.014 2352-4316/© 2016 Elsevier Ltd. All rights reserved.…”

Photon-Avalanche Effect of Y₂O₃:Er,Yb Nanoparticles Prepared by Laser Ablation in Liquid

“…Laser ablation in gas phase has been studied since laser was invented [1]. In contrast, laser ablation in liquid phase was recently investigated by many researchers [2][3][4][5][6][7][8][9][10]. Although plasma plume was propagated in gas phase, plasma plume in liquid phase was confined within the thickness of a few hundred nanometers [9].…”

“…Although plasma plume was propagated in gas phase, plasma plume in liquid phase was confined within the thickness of a few hundred nanometers [9]. High pressure and temperature would be realized in cavitation bubble which was created by plasma process [10] and would prepare highly-crystalline nanoparticles. By using the laser ablation in liquid various kinds of nanoparticles, such as metal, organic and inorganic material, were prepared [7,8].…”