Hydrophobicity Influence on Swimming Performance of Magnetically Driven Miniature Helical Swimmers.

Authors:
Chengwei Ye
Chengwei Ye
School of Science and Engineering
Jia Liu
Jia Liu
Institute of Basic Research in Clinical Medicine
China
Xinyu Wu
Xinyu Wu
New York University School of Medicine
United States
Ben Wang
Ben Wang
Florida State University
United States
Li Zhang
Li Zhang
Dongfang Hospital Affiliated to Beijing University of Chinese Medicine
China
Yuanyi Zheng
Yuanyi Zheng
Chongqing Medical University
China
Tiantian Xu
Tiantian Xu
University of Nebraska-Lincoln
United States

Micromachines (Basel) 2019 Mar 6;10(3). Epub 2019 Mar 6.

Guangdong Provincial Key Laboratory of Robotics and Intelligent System, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.

Helical microswimmers have been involved in a wide variety of applications, ranging from in vivo tasks such as targeted drug delivery to in vitro tasks such as transporting micro objects. Over the past decades, a number of studies have been established on the swimming performance of helical microswimmers and geometrical factors influencing their swimming performance. However, limited studies have focused on the influence of the hydrophobicity of swimmers' surface on their swimming performance. In this paper, we first demonstrated through theoretical analysis that the hydrophobicity of swimmer's surface material of the swimmer does affect its swimming performance: the swimmer with more hydrophobic surface is exerted less friction drag torque, and should therefore exhibit a higher step-out frequency, indicating that the swimmer with more hydrophobic surface should have better swimming performance. Then a series of experiments were conducted to verify the theoretical analysis. As a result, the main contribution of this paper is to demonstrate that one potential approach to improve the helical microswimmers' swimming performance could be making its surface more hydrophobic.

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Source
https://www.mdpi.com/2072-666X/10/3/175
Publisher Site
http://dx.doi.org/10.3390/mi10030175DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6471021PMC
March 2019
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References

(Supplied by CrossRef)
3D-Printed Biodegradable Microswimmer for Drug Delivery and Targeted Cell Labeling
Ceylan et al.
bioRxiv 2018

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