Effects of medium viscoelasticity on bubble collapse strength of interacting polydisperse bubbles

Unexpected variations in the effects of ultrasound-assisted myofibrillar protein processing under varying viscosity conditions

“…1 A (R 2 = 0.79), which is the highest in comparison to other correlation coefficients. In contrast, the research of Qin et al (2023) [26] showed that an increase in viscosity dramatically reduced bubble rupture's impact and inhibited bubble dynamics. The study conducted by Chen et al (2022) [9] further showed that free radical oxidation improved the covalent coupling effect by lowering the system's viscosity.…”

“…A previous study conducted by Chen et al (2022) [9] implied that the decrease in viscosity of the MRN system promoted the increase of sulfhydryl groups, which may be connected with the increased UID cavitation effect at this moment. Additionally, Qin et al (2023) [26] also reported that a high medium's viscosity significantly reduced the intensity of cavitation. In this work, the highest concentration of sulfhydryl groups was found in the MRN/GAD5 group, indicating that sulfhydryl groups were consumed less frequently at this time.…”

“…Cavitation bubbles frequently oscillate severely and collapse quickly in protein systems [26] , which is intimately connected with the effectiveness of covalent coupling. However, very few studies have been conducted on how medium viscosity affects covalent grafting recently, especially in light of the lack of investigations under different system viscosities.…”

“…This was analogous to the conclusion reported by Chen et al (2023) [18] that increasing the viscosity of the system with locust bean gum accelerated the significant degradation of crystal violet. Qin et al (2023) [26] found a negative relationship of viscosity with the sono-physico-chemical effects, and they attributed these findings to the diminishing influence of bubble-breaking strength. However, this research focused on theoretical models and failed to restrict the scope of viscosity changes.…”

Multi-bubble scattering acoustic fields in viscoelastic tissues under dual-frequency ultrasound

“… where G is the shear modulus of the surrounding medium. The viscoelasticity of the medium affects the resonance frequency and pulsation amplitude of the bubbles, and consequently also affects the intensity of their scattered sound pressure [32] , [33] . A single bubble under acoustic excitation radiates sound waves to the surrounding medium, and its scattering signal can be expressed as: where r is the distance from the bubble.…”