Characterization of transient cavitation activity during sonochemical modification of magnesium particles

Brezhneva, Nadzeya; Дежкунов, Н. В.; Ulasevich, Sviatlana A.; Skorb, Ekaterina V.

doi:10.1016/j.ultsonch.2020.105315

Cited by 9 publications

(9 citation statements)

References 59 publications

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“…Interestingly, damage that was more distinct was observed for methanol compared to n-hexane. Considering physicochemical properties of methanol and n-hexane, as shown in Table 2 , cavitation events are more likely to be initiated in hexane than in methanol owing to lower viscosity, surface tension, and density [41] , [42] , [43] , [44] . Brezhneva et al have obtained very low cavitation intensities, which are quantified as measured sound pressures using a hydrophone system, in ethylene glycol compared to those in ethanol [44] .…”

Section: Resultsmentioning

confidence: 99%

“…Considering physicochemical properties of methanol and n-hexane, as shown in Table 2 , cavitation events are more likely to be initiated in hexane than in methanol owing to lower viscosity, surface tension, and density [41] , [42] , [43] , [44] . Brezhneva et al have obtained very low cavitation intensities, which are quantified as measured sound pressures using a hydrophone system, in ethylene glycol compared to those in ethanol [44] . However, more effective cavitational effects via more vigorous implosion of the cavitation bubble can be obtained in a solvent with higher viscosity and surface tension once cavitation initiates [42] .…”

Section: Resultsmentioning

confidence: 99%

“…This was confirmed by the fact that a noticeable damage was obtained in water with the highest density, viscosity, and surface tension among the three solvents in this study. Moreover, organic solvents can be favorable for initiating cavitation because of the higher solubility of gases in organic solvents than in water [44] . However, the higher vapor pressure of methanol and n-hexane can inevitably reduce the severity of the cavitational effects because of the cushioning effect [42] , [43] , [45] .…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Ultrasound-assisted soil washing processes using organic solvents for the remediation of PCBs-contaminated soils

Lee

Son

2021

Ultrasonics Sonochemistry

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Ultrasound-assisted soil washing processes using organic solvents for the remediation of PCBs-contaminated soils

Lee

Son

2021

Ultrasonics Sonochemistry

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“…The common materials include chemical linkers, ligands, proteins, lipids, and nucleic acids. Further, the alteration induced by external pressure such as hypoxia environment, mechanical force, sonochemical reactions, and voltage operations are recognized as the approaches of modification or engineering [ 57 , 58 , 59 ]. At the genetic level, the term “genetic modification or engineering” can comprehensively cover the process of intentional alteration of genes to produce a beneficial characteristic to a targeted organism [ 60 ].…”

Section: Applications Of Modified Evs For Therapymentioning

confidence: 99%

Mesenchymal Stem Cell-Derived Extracellular Vesicle: A Promising Alternative Therapy for Osteoporosis

Chen

et al. 2021

IJMS

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Osteoporosis is the chronic metabolic bone disease caused by the disturbance of bone remodeling due to the imbalance of osteogenesis and osteoclastogenesis. A large population suffers from osteoporosis, and most of them are postmenopausal women or older people. To date, bisphosphonates are the main therapeutic agents in the treatment of osteoporosis. However, limited therapeutic effects with diverse side effects caused by bisphosphonates hindered the therapeutic applications and decreased the quality of life. Therefore, an alternative therapy for osteoporosis is still needed. Stem cells, especially mesenchymal stem cells, have been shown as a promising medication for numerous human diseases including many refractory diseases. Recently, researchers found that the extracellular vesicles derived from these stem cells possessed the similar therapeutic potential to that of parental cells. To date, a number of studies demonstrated the therapeutic applications of exogenous MSC-EVs for the treatment of osteoporosis. In this article, we reviewed the basic back ground of EVs, the cargo and therapeutic potential of MSC-EVs, and strategies of engineering of MSC-EVs for osteoporosis treatment.

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“…26,27 It is well documented that improving exfoliation efficiency and quality depends on further analysis of solvent selection and cavitation behavior, which changes with the characteristic properties of liquids. [28][29][30] Previous research [25][26][27]31,32 provides the foundation to expect that cavitation dynamics and SW propagation may vary distinctly due to significantly different density, surface tension, viscosity, vapor pressure, and speed of sound in the studied liquids. The results of this work can be applied to a wider range of dual frequency sonoprocesses where different properties are required, such as emulsification, 33 sonochemical synthesis, 34,35 in clinical practice, 36 and most notably the exfoliation of 2D nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Dual frequency ultrasonic cavitation in various liquids: High-speed imaging and acoustic pressure measurements

et al. 2023

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Ultrasonic cavitation is used in various processes and applications, utilising powerful shock waves and high-speed liquid jets generated by the collapsing bubbles. Typically, a single frequency source is used to produce the desired effects. However, optimisation of the efficiency of ultrasound reactors is necessary to improve cavitation activity in specific applications such as for the exfoliation of two dimensional (2D) materials. This research takes the next step to investigate the effect of a dual frequency transducer system on the bubble dynamics, cavitation zone, pressure fields, acoustic spectra and induced shock waves for four liquids with a range of physical properties. Using ultra-high-speed imaging and synchronised acoustic pressure measurements, the effect of ultrasonic dual frequencies on bubble dynamics was investigated. The addition of a high frequency transducer (1174 kHz) showed that the bubble fragments and satellite bubbles induced from a low frequency transducer (24 kHz) were able to extend their lifecycle, increase spatial distribution, thus, extending the boundaries of the cavitation zone. Furthermore, this combination of ultrasonic frequencies generated higher acoustic pressures (up to 180%) and enhanced the characteristic shock wave peak, indicating more bubble collapses and the generation of additional shock waves. The dual frequency system also enlarged the cavitation cloud size under the sonotrode. These observations specifically delineated the enhancement of cavitation activity using a dual frequency system pivotal for optimisation of existing cavitation-based processing technologies.

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Characterization of transient cavitation activity during sonochemical modification of magnesium particles

Cited by 9 publications

References 59 publications

Ultrasound-assisted soil washing processes using organic solvents for the remediation of PCBs-contaminated soils

Ultrasound-assisted soil washing processes using organic solvents for the remediation of PCBs-contaminated soils

Mesenchymal Stem Cell-Derived Extracellular Vesicle: A Promising Alternative Therapy for Osteoporosis

Dual frequency ultrasonic cavitation in various liquids: High-speed imaging and acoustic pressure measurements

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