منابع مشابه
Stochastic low Reynolds number swimmers.
As technological advances allow us to fabricate smaller autonomous self-propelled devices, it is clear that at some point directed propulsion could not come from pre-specified deterministic periodic deformation of the swimmer's body and we need to develop strategies for extracting a net directed motion from a series of random transitions in the conformation space of the swimmer. We present a th...
متن کاملModeling microscopic swimmers at low Reynolds number.
The authors employ three numerical methods to explore the motion of low Reynolds number swimmers, modeling the hydrodynamic interactions by means of the Oseen tensor approximation, lattice Boltzmann simulations, and multiparticle collision dynamics. By applying the methods to a three bead linear swimmer, for which exact results are known, the authors are able to compare and assess the effective...
متن کاملThe performance of discrete models of low Reynolds number swimmers.
Swimming by shape changes at low Reynolds number is widely used in biology and understanding how the performance of movement depends on the geometric pattern of shape changes is important to understand swimming of microorganisms and in designing low Reynolds number swimming models. The simplest models of shape changes are those that comprise a series of linked spheres that can change their sepa...
متن کاملOptimal Strokes for Low Reynolds Number Swimmers: An Example
Swimming, i.e., being able to advance in the absence of external forces by performing cyclic shape changes, is particularly demanding at low Reynolds numbers. This is the regime of interest for microorganisms and microor nano-robots. We focus in this paper on a simple yet representative example: the three-sphere swimmer of Najafi and Golestanian [16]. For this system, we show how to cast the pr...
متن کاملModels of Low Reynolds Number Swimmers Inspired by Cell Blebbing
Eukaryotic cells move through the complex micro-environment of a tissue either by attaching to the extracellular matrix – sometimes degrading it locally – and pulling themselves along, or by squeezing through the matrix by appropriate sequences of shape changes. Some cells can even swim by shape changes, and one mode used is called blebbing, in which a cell creates a small hemispherical protrus...
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ژورنال
عنوان ژورنال: Journal of Physics: Condensed Matter
سال: 2009
ISSN: 0953-8984,1361-648X
DOI: 10.1088/0953-8984/21/20/204104