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首页> 外文期刊>Mechatronics, IEEE/ASME Transactions on >Modeling and Swimming Property Characterizations of Scaled-Up Helical Microswimmers
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Modeling and Swimming Property Characterizations of Scaled-Up Helical Microswimmers

机译：规模化螺旋微游泳者的建模和游泳特性表征

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摘要

Micro- and nanorobots capable of controlled propulsion at low Reynolds number are foreseen to change many aspects of medicine by enabling targeted diagnosis and therapy, and minimally invasive surgery. Several kinds of helical swimmers with different heads actuated by a rotating magnetic field have been proposed in prior works. Beyond these proofs of concepts, this paper aims to obtain an optimized design of the helical swimmers adapted to low Reynolds numbers. For this, we designed an experimental setup and scaled-up helical nanobelt swimmers with different head and tail coatings to compare their rotational propulsion characteristics. We found in this paper that the head shape of a helical swimmer does not influence the shape of the rotational propulsion characteristics curve, but it influences the cutoff frequency values. The rotational propulsion characteristics of the helical swimmers with a magnetic head or a magnetic tail are different. The helical swimmers with uniformly coated magnetic tails do not show a cutoff frequency, whereas the ones with a magnetic head exhibit a saturation of frequency.
机译：能够以低雷诺数控制推进力的微型机器人和纳米机器人已被预料到，它将通过针对性的诊断和治疗以及微创手术来改变医学的许多方面。在现有技术中已经提出了几种由旋转磁场致动的具有不同头部的螺旋形游泳器。除了这些概念证明之外，本文旨在获得适用于低雷诺数的螺旋形游泳者的优化设计。为此，我们设计了一个实验装置和按比例放大的具有不同头和尾涂层的螺旋纳米带游泳者，以比较其旋转推进特性。我们在本文中发现，螺旋形游泳者的头部形状不会影响旋转推进特性曲线的形状，但会影响截止频率值。具有磁头或磁尾的螺旋形游泳者的旋转推进特性是不同的。具有均匀覆盖的磁尾的螺旋形游泳者不会显示出截止频率，而具有磁头的螺旋形游泳者会显示出饱和频率。

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