Ultrasonic cavitation refers to the formation and collapse of bubbles in a liquid medium due to the sudden application of low pressures. This phenomenon occurs when a high-intensity ultrasonic wave causes gas pockets to expand and then violently collapse, generating high stresses in the liquid. It is an important factor in various applications of high-power ultrasonics, such as …

2022年11月1日 · An extensive review of the strengths and weaknesses of ultrasound-assisted treatments has also been considered. Essentially, the cavitation phenomena enhance the extraction efficiency through an increased mass transfer rate between the substrate and solvent due to the implosion of microbubbles.

2023年3月1日 · We have introduced microbubbles into rat livers during normothermic, oxygenated, ex vivo machine perfusion (NMP) while penetrating the liver with ultrasound leading to repeated organ-wide microbubble cavitation and dissolution of microvascular plugging.

2019年1月1日 · Introduction Various types of non-invasive methods are available to reduce local fat mass, including cryolipolysis, radiofrequency (RF), low-level laser therapy and ultrasound cavitation (USC). The main purpose of this study was to assess the combined effect of cryolipolysis with radio-frequency and ultrasound cavitation on anthropometric indices.

2024年3月30日 · The cavitation effect plays a key role in the field of High-intensity focused ultrasound treatment. By monitoring cavitation to adjust the irradiation…

2022年1月1日 · Cavitation intensity is used to describe the activity of cavitation, and several methods are developed to identify the intensity of cavitation. This work aimed to provide an overview and discussion of the several existing characterization methods for cavitation intensity, three acoustic approaches for charactering cavitation were discussed in ...

2018年6月1日 · Cavitation effect of high intensity focused ultrasound. Interaction of HIFU beams with microscopic tissue gas bubbles at the focus causes steady oscillation of bubbles resulting in localized shear forces and mild temperature elevation.

2024年9月1日 · Recent innovations in laboratory-scale ultrasound emulsification devices have also shown promising results in enhancing the acoustic cavitation effect and promoting structural changes in proteins to enhance emulsification activity.

2017年1月1日 · This review presents a complete picture of current knowledge on ultrasound-assisted extraction of food and natural products. The readers like chemists, biochemists, chemical engineers, physicians, and food technologists even from academia or industry will find a deep and complete perspective regarding ultrasound-assisted extraction.

2008年6月1日 · An alternative strategy for generating these high temperatures and pressures was reported by Flynn in 1986 [1]. He suggested that ultrasonic cavitation processes, if sufficiently powerful, should produce the necessary combination of pressure and temperature to allow graphite-to-diamond transformation in metal melts. Cavitation is an efficient method to …