Dr Józef MORAWIEC

Czyż, H.

doi:10.1515/aoa-2017-0057

Cited by 4 publications

(5 citation statements)

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“…t N e δ As shown by calculations [11] an increase in concentration of several hundreds of thousands times is achieved as compared to the initial concentration within fractions of a second.…”

Section: Changes In Concentration Of Blood Components In Plasma In An...mentioning

confidence: 82%

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Physics in Medicine and Economy of Contemporary Society

Czyż

Jasiński

2017

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This paper describes the main methods of separating blood into components. The most common methods used in medicinal practice include centrifugation and filtration. Currently, there has been a lot of research on the application of ultrasound as the new, innovative method of separation of blood components. Ultrasound use is a theoretically elaborated method and experimental research is in process with the aim of its implementation in medical diagnostics. Contemporary societies are aware of the importance of findings of physics as well as of the fact that our everyday life is strongly connected to physics and to technical devices that have been created on the basis of its fundamental laws.

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Section: Changes In Concentration Of Blood Components In Plasma In An...mentioning

confidence: 82%

“…Ultrasound wave that is spread out in a fluid medium not only causes vibration but also progressive movement of particles [10]. As a result, movement of particles that are suspended in such medium is a sum of rapid vibrating movement and slow progressive movement towards the medium [11].…”

Section: Changes In Concentration Of Blood Components In Plasma In An...mentioning

confidence: 99%

Physics in Medicine and Economy of Contemporary Society

Czyż

Jasiński

2017

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“…Ultrasound acoustic standing waves are used to generate two nonlinear acoustophoretic forces for manipulation of fluids and particles inside microfluidic systems (Czyż, 1987a;1987b;Lewandowski, 1992;Wiklund et al, 2012;Włoch et al, 2019). The acoustic radiation force tends to focus particles on the nodal or anti-nodal plane of the acoustic standing waves (Doinikov, 1997;Gor'kov, 1962;King, 1934;Yosioka, Kawasima, 1955) while the Stokes drag force of the acoustic streaming velocity field tends to defocus and spread out the suspended particles (Nyborg, 1953;1958;Rayleigh, 1884; Schlichting, Gersten, 2017).…”

Section: Introductionmentioning

confidence: 99%

Archives of Acoustics

Jannesar

Hamzehpour

2020

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Geometry of the fluid container plays a key role in the shape of acoustic streaming patterns. Inadvertent vortices can be troublesome in some cases, but if treated properly, the problem turns into a very useful parameter in acoustic tweezing or micromixing applications. In this paper, the effects of sinusoidal boundaries of a microchannel on acoustic streaming patterns are studied. The results show that while top and bottom sinusoidal walls are vertically actuated at the resonance frequency of basic hypothetical rectangular microchannel, some repetitive acoustic streaming patterns are recognised in classifiable cases. Such patterns can never be produced in the rectangular geometry with flat boundaries. Relations between geometrical parameters and emerging acoustic streaming patterns lead us to propose formulas in order to predict more cases. Such results and formulations were not trivial at a glance.

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“…Ultrasound is a well-known method for reducing the size of dispersed particles in the liquid fluid (Czyż, 2014;Wang et al, 2017). Ultrasonic processing is required to deagglomerate particles down to the nanosizes due to the mechanical effect of ultrasonic cav-itation.…”

Section: Introductionmentioning

confidence: 99%

Archives of Acoustics

Kudryashova

Vorozhtsov

Danilov

2019

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Ultrasonic processing in the cavitation mode is used to produce the composite materials based on the metal matrix and reinforcing particles of micro-and nano-sizes. In such a case, the deagglomeration of aggregates and the uniform distribution of particles are the expected effects. Although the particles can not only fragment in the acoustic field, they also can coagulate, coarsen and precipitate. In this paper, a theoretical study of processes of deagglomeration and coagulation of particles in the liquid metal under ultrasonic treatment is made. The influence of various parameters of ultrasound and dispersion medium on the dynamics of particles in the acoustic field is considered on the basis of the proposed mathematical model. The criterion of leading process (coagulation or deagglomeration) has been proposed. The calculated results are compared with the experimental ones known from the scientific literature.

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Dr Józef MORAWIEC

Cited by 4 publications

References 0 publications

Physics in Medicine and Economy of Contemporary Society

Physics in Medicine and Economy of Contemporary Society

Archives of Acoustics

Archives of Acoustics

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