Measurement of dynamics of laser-induced cavitation around nanoparticle with high-speed digital holographic microscopy

Vapor Nanobubbles around Heated Nanoparticles: Wetting Dependence of the Local Fluid Thermodynamics and Kinetics of Nucleation

“…Molecular dynamics (MD) simulations have elucidated that the nanobubble’s development around the nanoparticle unfolds through four primary stages: (i) adiabatic expansion, (ii) isothermal expansion, (iii) isothermal collapse, and (iv) rapid heating resulting from interaction with the hot nanoparticle . Additionally, it has been observed that the growth and subsequent collapse of the nanobubble exhibit asymmetry in their temporal progression. ,, It is worth noting that the emergence of the vapor layer encircling the nanoparticle is linked to a reduction in the efficiency of heat transfer between the nanoparticle and the fluid due to a decrease in the fluid’s density surrounding the nanoparticle. , …”

“…7 Additionally, it has been observed that the growth and subsequent collapse of the nanobubble exhibit asymmetry in their temporal progression. 7,13,14 It is worth noting that the emergence of the vapor layer encircling the nanoparticle is linked to a reduction in the efficiency of heat transfer between the nanoparticle and the fluid due to a decrease in the fluid's density surrounding the nanoparticle. 5 The investigation of plasmonic nanobubble kinetics is a multifaceted field influenced by several factors.…”

Laser-Induced Cavitation for Controlling Crystallization from Solution

“…Transient microvapor bubbles can be created in liquid environments with the absorption of laser pulses by dyes [17] and nanoparticles [18,19]. The impurity heating hypothesis suggests that laser energy absorbed by inherent insoluble impurities (such as nanoparticles) locally evaporates its surrounding solvent-consequently triggering solute nucleation.…”

“…Thus, this work differentiates itself from cavitation-induced crystallization experiments via multiphoton absorption using focused ultrashort laser pulse (∼femtosecond) that might involve photochemistry [52]. Moreover, it captures the size of cavitation bubbles [Oð100 μmÞ] [19] surrounding the nanoparticles for the inferred magnitude of laser energies and impurity sizes in NPLIN experiments [51] (see Supplemental Material [23], Sec. III for calculations).…”

Plasmonic Optical Tweezers for Particle Manipulation: Principles, Methods, and Applications

“…Naturally, the optical force needed for trapping or sorting target objects will increase along with the increase of the fluid or particle velocity. Although this force can be further improved by increasing the laser power, the accompanying side effects, such as localized heating, bubble formation, enhancement of Brownian motion, and thermophoresis, will reduce the applicability of this technique. − It is found that this is achievable if the manipulation speed is lower than 0.15 μm/s (for gold or silver nanospheres with a diameter of 100 nm) or 0.17 μm/s (for polystyrene sphere with a diameter of 160 nm) for conventional optical tweezers. As a contrast, for dielectric particles larger than 1000 nm, the manipulation speed can be higher than 225 μm/s (see Figure a) .…”