牛顿和粘弹性介质中螺旋推进的实验表征

2017 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO) Pub Date : 2017-08-01 DOI:10.1109/3M-NANO.2017.8286276

Dalia Mahdy, Abdallah Mohamed, A. Klingner, Ashraf Tammam, A. Wahdan, M. Serry, I. Khalil

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引用次数: 0

摘要

本文研究了具有两种不同流变性能的螺旋机器人在低雷诺数环境下的运动。研究了机器人从牛顿流体过渡到粘弹性环境时的游动特性。实验结果表明，在中等浓度的明胶中，螺旋机器人可以引起剪切变薄。因此，其在明胶中的速度大于在硅油中的速度。螺旋机器人在粘度为5 Pa的硅油中以0.36 mm/s的最大速度游动。在两个旋转偶极子场的影响下，在浓度为2%、3%和4%时，凝胶的分子量分别为0.22 mm/ S、0.71 mm/ S和0.94 mm/ S。

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Experimental characterization of helical propulsion in Newtonian and viscoelastic mediums

This work in vestigates the locomotion of helical robots in a low Reynolds number environment with two different rheological properties. We study the swimming characteristics of the robot during its transition from a Newtonian fluid to a viscoelastic environment. Our experimental results show that the helical robot causes shear thinning in gelatin with intermediate concentration. Therefore, its speed in gelatin is greater than that in silicone oil. The helical robot swims at maximum speed of 0.36 mm/s in silicone oil with viscosity of 5 Pa.s, and 0.22 mm/s, 0.71 mm/s, and 0.94 mm/s in gelatin with concentration of 2%, 3% and 4%, respectively, under the influence of two rotating dipole fields.

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2017 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO)

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