Cloud cavitation induced by shock-bubble interaction in a viscoelastic solid

Oguri, Ryota; Ando, Keita

doi:10.1088/1742-6596/656/1/012032

Cited by 2 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…11,12,18 The nucleation followed by laser-induced cavitation was reported in several experiments. [27][28][29] As far as we are concerned, the competition between cavitation and nucleation processes in the regimes of ultrafast laser irradiation of fused silica, has not been investigated previously. The conditions for nanopore formation, stability and growth also remain to be elucidated.…”

Section: Introductionmentioning

confidence: 99%

Nanopore-mediated ultrashort laser-induced formation and erasure of volume nanogratings in glass

Rudenko

Colombier

Itina

2018

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

Ultrashort laser nanostructuring of glasses has attracted increasing interest over the last few decades due to numerous applications in three-dimensional nanofabrication, optical data storage, and development of nanofluidic and polarization-sensitive devices. The knowledge of the influence of laser parameters on the nanostructure formation/erasure is still lacking. In this work, laser-induced modifications and mechanisms of glass decomposition in fused silica are numerically investigated. Cavitation is shown to be the primary mechanism responsible for void formation at the center of the heat-affected zone. Multipulse accumulation processes providing higher local temperatures/pressures lead to the rapid formation of cavitation nanopores, lying in the origin of self-organized nanogratings. Femtosecond laser-interaction threshold conditions required for nanograting formation/erasure are defined in agreement with the available experimental findings. For this, a detailed multi-physical modeling is performed taking into account laser pulse propagation in nonlinear and dispersive media, electronic relaxation/excitation processes, electron-ion heat transfer and thermal diffusion. Based on the calculated temperatures, classical nucleation theory, viscoelastic energy conservation law and the Rayleigh-Plesset model, threshold conditions leading to nanopore formation, stability and growth are investigated as a function of laser energy, pulse duration and repetition rate. The performed numerical study not only contributes to a better fundamental understanding of ultrashort laser-induced modifications on the nanoscale but should also be helpful in defining the optimal laser parameters for nanostructuring or avoiding nanostructure organization and in developing techniques for nanograting rewriting.

show abstract

Section: Introductionmentioning

confidence: 99%

Nanopore-mediated ultrashort laser-induced formation and erasure of volume nanogratings in glass

Rudenko

Colombier

Itina

2018

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…In experiments, it is frequent to replace the tissue with a mimicking phantom such as a gelatin-based mixture [4] which allows to cover a wide range of mechanical properties from quasi-Newtonian liquids to soft-solids by varying the gelatin/water ratio. Experiments on cavitation in soft solids have shown that longitudinal waves traveling at the speed of sound analogous to those found in liquids are produced during bubble collapse [3,6]. But unlike liquids, soft solids elasticity allows transversal waves of much slower speed (few m.s −1 ) to propagate [5].…”

Section: Introductionmentioning

confidence: 99%

Elastic Waves Generated by Laser Induced Bubbles in Soft Solids

Rapet¹,

Ohl²

2018

Proceedings of the 10th International Symposium on Cavitation (CAV2018)

View full text Add to dashboard Cite

We experimentally investigate the generation and propagation of elastic waves in gelatin occurring during the collapse of laser induced bubbles. Sub-millimeter sized bubbles are generated with a pulsed 6ns laser within the tissue mimicking material. The stress fields and wave propagation is visualized with elastography, a method where the polarity of a polarized light is altered by the state of stress of the medium. High-speed photography captures the fast dynamics of the bubbles and is used to describe the succession of events leading to the wave emission. 4 configurations of bubble collapse are studied; spherical and non-spherical collapses in the bulk, collapse near a wall and collapse near a free surface.

show abstract

Cloud cavitation induced by shock-bubble interaction in a viscoelastic solid

Cited by 2 publications

References 7 publications

Nanopore-mediated ultrashort laser-induced formation and erasure of volume nanogratings in glass

Nanopore-mediated ultrashort laser-induced formation and erasure of volume nanogratings in glass

Elastic Waves Generated by Laser Induced Bubbles in Soft Solids

Contact Info

Product

Resources

About