Monitoring of changes in cluster structures in water under AC magnetic field

Usanov, Andrey D.; Ulyanov, Sergey S.; Ilyukhina, N. S.; Usanov, D. A.

doi:10.1134/s0030400x16010239

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…Despite early theoretical calculations showing NB persistence for microseconds only (14), they have been observed to be long lived experimentally (15). It is hypothesized that NB clusters are stabilized by ionic solutes and magnetic fields (16).…”

Section: Introductionmentioning

confidence: 97%

Massive generation of metastable bulk nanobubbles in water by external electric fields

2020

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Nanobubbles (NBs) are nanoscopic gaseous domains than can exist on solid surfaces or in bulk liquids. They have attracted substantial attention due to their long-time (meta)stability and a high potential for real-world applications. Using an approach not previously investigated, we exploit surface-electrostatic NB formation and stabilization via application of external electric fields in gas-liquid systems, with the marked result of massively increased gas uptake into the liquid in NB form. The de facto gas solubility enhancement (over many months) ranges from 2.5-fold for oxygen to 30-fold for methane vis-à-vis respective Henry’s law values for gas solubility; the more hydrophobic the gas, the more spectacular the increase. Molecular dynamics simulations reveal that the origin of NBs’ movement lies in dielectrophoresis, while substantial NB stabilization arises from a surface-polarization interaction.

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Section: Introductionmentioning

confidence: 97%

Massive generation of metastable bulk nanobubbles in water by external electric fields

2020

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“…This deterioration was suppressed by the MFAF. According to previous literature (Usanov et al ., 2016), the MFAF creates a competitive environment for intra‐ and intermolecular hydrogen bonding, thus loosening the interaction among water clusters while strengthening inter cluster hydrogen bonds. As a result, a large number of small water clusters tend to form, rather than large clusters that occur under CF storage.…”

Section: Resultsmentioning

confidence: 99%

Effect of magnetic field with different dimensions on quality of avocado puree during frozen storage

Wang

Jin

Yang

et al. 2022

Int J of Food Sci Tech

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The magnetic field-assisted freezing (MFAF) has been identified as an emerging physical method used for food preservation, characterised by its high penetrability in food materials. However, effects of magnetic fields in different dimensions on food freezing process and its products quality have not been previously compared. Thus, the alternating magnetic fields (4 mT and 50 Hz) were applied in different directions and its impact on the physiochemical properties of frozen avocado puree during the storage were investigated. In comparison with the conventional freezing process, the application of MFAF could reduce the weight loss and soluble solids rise. The transformation between different types of water and their corresponding redistribution were also limited under MFAF. The decrease of total polyphenol content with extended storage time was reduced due to the inhibitory effect of MFAF on the polyphenol oxidase activity. In general, the MFAF of avocado purees presented better texture characteristics and higher sensory qualities than the controls. The more directions the magnetic field was applied, the better it performed in maintaining the quality of avocado puree. This study provides a reference for the application of the MFAF on food cryopreservation.

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“…Clusters of nanobubbles (bubstons) have been proposed, which are stabilised by ionic solutes (and magnetic fields) [39] and contain gas at atmospheric pressure [40]. Nanobubbles in (still) mineral water can be magnetised and retain this magnetisation for more than a day [41]. A review of some hypotheses for the stability of bulk nanobubbles has been reported in the literature [42].…”

Section: Microscopic Fundamentalsmentioning

confidence: 99%

Environmental Exploration of Ultra-Dense Nanobubbles: Rethinking Sustainability

English

2022

Environments

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Nanobubbles are nanoscopic gaseous domains than can exist on solid surfaces or in bulk liquids. They have attracted significant attention in the last decade due to their long-time (meta)stability and ready potential for real-world applications, especially in environmental engineering and more sustainable ecosystems, water treatment, irrigation, and crop growth. After reviewing important nano-bubble science and activity, with some of the latest promising results in agriculture, we point out important directions in applications of nano-bubble phenomena for boosting sustainability, with viewpoints on how to revolutionise best-practice environmental and green sustainability, taking into account economic drivers and impacts. More specifically, it is pointed out how nanobubbles may be used as delivery vehicles, or “nano-carriers”, for nutrients or other agents to specific targets in a variety of ecosystems of environmental relevance, and how core this is to realising a vision of ultra-dense NBs in shaping a positive and lasting impact on ecosystems and our natural environment.

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Monitoring of changes in cluster structures in water under AC magnetic field

Cited by 8 publications

References 9 publications

Massive generation of metastable bulk nanobubbles in water by external electric fields

Massive generation of metastable bulk nanobubbles in water by external electric fields

Effect of magnetic field with different dimensions on quality of avocado puree during frozen storage

Environmental Exploration of Ultra-Dense Nanobubbles: Rethinking Sustainability

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