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Wyszukujesz frazę "83.80.Rs" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Shape Change of Micelles Dragged with Constant Velocity as Addressed in Terms of Biolubrication Application
Autorzy:
Bełdowski, P.
Winkler, R.
Hładyszowski, J.
Jung, S.
Gadomski, A.
Powiązania:
https://bibliotekanauki.pl/articles/1398811.pdf
Data publikacji:
2016-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
83.80.Rs
47.11.Mn
82.33.Nq
83.50.-v
Opis:
Molecular dynamics simulations have been performed for a model of coarse-grained lipids in water. We try to establish structural properties of micelles when they are dragged past each other. The lipid-lipid and lipid-water interactions are taken from a coarse-grained model first introduced by Marrink et al. This work focuses on shape changes upon mutual interaction of micelles when dragged with constant velocity. We find that micelles can change their shapes from spherical to cylindrical regardless of the number of constituting lipids. We address this result toward understanding facilitated vs. obstructed lubrication of articular cartilage by synovial fluid at nanoscale level.
Źródło:
Acta Physica Polonica A; 2016, 129, 2; 188-189
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic Viscosity of Aluminum Oxide-Ethylene Glycol (Al₂O₃-EG) Nanofluids
Autorzy:
Żyła, G.
Fal, J.
Gizowska, M.
Witek, A.
Cholewa, M.
Powiązania:
https://bibliotekanauki.pl/articles/1402591.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
83.10.Pp
83.50.Ax
83.60.Fg
83.60.Rs
83.80.Hj
Opis:
The paper presents the results of measurements of rheological properties of ethylene glycol (EG) based aluminum oxide (Al₂O₃) nanofluids. The nanofluids have been produced by two-step method with the use of commercially available nanoparticles. Dynamic viscosity curves and dependence of viscosity on temperature for these materials have been measured. It has shown that with higher concentration of nanoparticles in the suspension, these nanofluids exhibit the non-Newtonian flow and it can be considered as shear-thinning liquids. The effect of temperature on the dynamic viscosity in Al₂O₃-EG nanofluids can be modelled with the use of Vogel-Fulcher-Tammann expression.
Źródło:
Acta Physica Polonica A; 2015, 128, 2; 240-242
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular Dynamics Simulations of Energetic Ar Cluster Bombardment of Ag(111)
Autorzy:
Palka, G.
Rzeznik, L.
Paruch, R.
Postawa, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1400436.pdf
Data publikacji:
2013-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.49.Sf
82.80.Ms
83.10.Rs
79.20.Rf
Opis:
Large-scale molecular dynamics computer simulations are used to investigate the dynamics of material ejection during high-energy $Ar_n$ cluster bombardment of Ag(111) at normal incidence. The silver sample containing 7 million atoms is bombarded with $Ar_n$ projectiles (n=45-30000) with kinetic energy spanning from a few keV up to 1 MeV. Such a wide range of projectile parameters allows probing processes taking place during low-density collision cascade as well as during high-density events characteristic of micrometeorite bombardment in space. The material modifications and total sputtering yield of ejected particles are investigated. While at low-energy impacts, ejection of individual silver atoms is the main emission channel, the ejection of large clusters from the corona of the created crater dominates for the high-energy impacts.
Źródło:
Acta Physica Polonica A; 2013, 123, 5; 831-833
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sputtering of Benzene Sample by Large Ne, Ar and Kr Clusters - Molecular Dynamics Computer Simulations
Autorzy:
Rzeznik, L.
Paruch, R.
Garrison, B.
Postawa, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1400433.pdf
Data publikacji:
2013-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
68.49.Sf
82.80.Ms
83.10.Rs
61.82.Pv
79.20.Rf
Opis:
Molecular dynamics simulations are employed to probe the role of an impact angle on emission efficiency of organic molecules sputtered from benzene crystal bombarded by 15 keV $Ne_{2953}$, $Ar_{2953}$, and $Kr_{2953}$ clusters. It is found that both the cluster type and the angle of incidence have significant effect on the emission efficiency. The shape of the impact angle dependence does not resemble the dependence characteristic for medium size clusters ($C_{60}$, $Ar_{366}$), where sputtering yield only moderately increases with the impact angle, has a shallow maximum around 40° and then decreases. On the contrary, for the large projectiles ($Ne_{2953}$, $Ar_{2953}$, and $Kr_{2953}$) the emission efficiency steeply increases with the impact angle, has a pronounced maximum around 55° followed by rapid signal decay. It has been found that the sputtering yield is the most sensitive to the impact angle change for Kr cluster projectiles, while change of the impact angle of Ne projectile has the smallest effect on the efficiency of material ejection.
Źródło:
Acta Physica Polonica A; 2013, 123, 5; 825-827
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ultrasonic Methods of the Cells Separation in Human Blood
Autorzy:
Włoch, A.
Czyż, H.
Jasiński, T.
Powiązania:
https://bibliotekanauki.pl/articles/1402588.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
43.35.+d
47.35.Rs
62.60.+v
83.80.Hj
87.50.Y-
Opis:
This work deals with the problem of ultrasound in the context of biomedical and clinical applications. Ultrasonic waves can be used for the separation of cells in human blood. Under the influence of ultrasonic waves cells included in the liquid experience a certain characteristic displacement was referred to as drift. Presented work suggests that only radiation pressure should be taken into account as a mechanism of drifting in this situation. It has been demonstrated that the growth of cells concentration around the points of stable equilibrium is exponential. The time constant of this growth was estimated and the formulae which determine the time needed to obtain the assumed concentration increase have been derived. The theoretical studies of acoustic agglomeration of particles in the liquid have become a new focus in the ultrasonic research.
Źródło:
Acta Physica Polonica A; 2015, 128, 2; 234-236
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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