Investigation of a cavitation bubble between a rigid boundary and a free surface

Abstract

Dynamics of ultrasound-induced cavitation bubbles in non-Newtonian liquids and near a rigid boundaryDynamics of laser-induced cavitation bubbles near an elastic boundary used as a tissue phantom AIP Conf.

Optodynamic energy-conversion efficiency during an Er:YAG-laser-pulse delivery into a liquid through different fiber-tip geometries

“…The optodynamic phenomena in a liquid 24,30,38,39 induced by erbium radiation delivered through different FTs were examined using shadowgraphy. Here, a frequency-doubled Nd:YAG laser (Ekspla, Lithuania, PL2250-SH-TH) emitting green (λ ¼ 532 nm) pulses with a duration of 30 ps was used as the illumination source.…”

“…28,29 The described phenomena represent a typical optodynamic process, where the energy of the laser pulse is coupled with the mechanical energy of the liquid medium. 30 The characterization of these phenomena is therefore important for the optimization of biomedical processes based on laser ablation in liquids.…”

Dynamic study of PLGA/CS nanoparticles delivery containing drug model into phantom tissue using CO2 laser for clinical applications

“…From there onwards, as time passes by, the cavity depth and diameter increases with increasing fluence until it saturates as similarly observed in other works [14,17,[31][32][33]. The total cavity depth due to vaporization and the hydrodynamic flow resulting from the bubbles which act as a driving thermo-mechanical force can be studied in terms of laser pulse numbers.…”

“…In our first report on laser induced cavitation and the role of photoacoustic effects [14] we showed that hot, high-pressure vapor cavity produced at 2.6-3 mm can lead to energy being transported well beyond the laser beam penetration depth as a direct result of the bubble expansion following the pulse and large amplitude acoustic waves associated with bubble formation and decay. Since then many efforts have been reported on the optical cavitation dynamics [15][16][17][18][19][20] and potential use of cavitation and photoacoustic [21] as a means of delivering drug into tissue [22][23][24][25][26][27][28][29][30] and generally on a solid boundary [31][32][33]. However, for more accurate and localized delivery, controlled drug release based on nanotechnology has been one of the recent developments in this field.…”

Numerical Simulation for Cavitation Bubble Near Free Surface and Rigid Boundary

“…On the contrary, in the case of collapse near the free surface the collapse times are shortened and the liquid jet directed away from the boundary. 6) Cavitation bubble dynamics were investigated using an experimental facility such as laserinduced and spark-generated bubbles as well as acoustically generated cavitation bubbles. 2,7) Besides, many kinds of numerical methods have been performed to simulate a bubble dynamics.…”