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of 117
pro vyhledávání: '"Leshansky, Alexander"'
Linear shear flow bounded by a plane wall is an idealization that occurs in microfluidic devices and many other applications. Perfect plane approximation neglects surface irregularities and discrete particles adsorbed at the surface. Here we study th
Externí odkaz:
http://arxiv.org/abs/2405.15554
Publikováno v:
Anal. Chem. 96 (26), 10559-10568 (2024)
Quartz Crystal Microbalance with Dissipation monitoring (QCM-D) has become a major tool in the analysis of adsorption of nanometric objects, such as proteins, viruses, liposomes and inorganic particles from the solution. While in vacuum extremely acc
Externí odkaz:
http://arxiv.org/abs/2311.15880
In the present paper we theoretically study the shear force exerted on an infinite horizontal plane undergoing fast lateral oscillations in presence of a rigid particle suspended in the viscous liquid above the plate. The study is largely motivated b
Externí odkaz:
http://arxiv.org/abs/2212.00717
We derive the general solution of the unsteady Stokes equations for an unbounded fluid in spherical polar coordinates, in both time and frequency domains. The solution is an expansion in vector spherical harmonics and given as a sum of a particular s
Externí odkaz:
http://arxiv.org/abs/2110.00387
The seminal Batchelor-Green's (BG) theory on the hydrodynamic interaction of two spherical particles of radii a suspended in a viscous shear flow neglects the effect of the boundaries. In the present paper we study how a plane wall modifies this inte
Externí odkaz:
http://arxiv.org/abs/1908.11208
Publikováno v:
Phys. Rev. Applied 12, 014025 (2019)
Steering of magnetic nano-/microhelices by a rotating magnetic field is considered as a promising technique for controlled navigation of tiny objects through viscous fluidic environments. It has been recently demonstrated that simple geometrically ac
Externí odkaz:
http://arxiv.org/abs/1903.06298
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We construct a boundary integral representation for the low-Reynolds-number flow in a channel in the presence of freely-suspended particles (or droplets) of arbitrary size and shape. We demonstrate that lubrication theory holds away from the particle
Externí odkaz:
http://arxiv.org/abs/1712.04504
Autor:
Sachs, Johannes, Morozov, Konstantin I., Kenneth, Oded, Qiu, Tian, Segreto, Nico, Fischer, Peer, Leshansky, Alexander M.
Publikováno v:
Phys. Rev. E 98, 063105 (2018)
We theoretically and experimentally investigate low-Reynolds-number propulsion of geometrically achiral planar objects that possess a dipole moment and that are driven by a rotating magnetic field. Symmetry considerations (involving parity, $\widehat
Externí odkaz:
http://arxiv.org/abs/1708.01140
Autor:
Fouxon, Itzhak, Leshansky, Alexander
We consider arbitrary, possibly turbulent, Boussinesq flow which is smooth below a dissipative scale $l_d$. It is demonstrated that the stability of the flow with respect to growth of fluctuations with scale smaller than $l_d$ leads to a non-trivial
Externí odkaz:
http://arxiv.org/abs/1407.6891