TY - JOUR
T1 - Low-Reynolds-number, biflagellated Quincke swimmers with multiple forms of motion
AU - Han, Endao
AU - Zhu, Lailai
AU - Shaevitz, Joshua W.
AU - Stone, Howard A.
N1 - Funding Information:
ACKNOWLEDGMENTS. We thank Janine Nunes and Nan Xue for the help with the experiments. We thank Ellie Acosta, Benjamin Bratton, Yong Dou, Matthias Koch, and Talmo Pereira for useful discussions. E.H. acknowledges the support by the NSF through the Center for the Physics of Biological Function (PHY-1734030). L.Z. thanks the start-up grant provided by the National University of Singapore (R-265-000-696-133). H.A.S. acknowledges the support by the NSF through the Princeton University Materials Research Science and Engineering Center (DMR-2011750). The computational work for this article was performed on resources of the National Supercomputing Center, Singapore (https://www.nscc.sg).
Publisher Copyright:
© 2021 National Academy of Sciences. All rights reserved.
PY - 2021/7/20
Y1 - 2021/7/20
N2 - In the limit of zero Reynolds number (Re), swimmers propel themselves exploiting a series of nonreciprocal body motions. For an artificial swimmer, a proper selection of the power source is required to drive its motion, in cooperation with its geometric and mechanical properties. Although various external fields (magnetic, acoustic, optical, etc.) have been introduced, electric fields are rarely utilized to actuate such swimmers experimentally in unbounded space. Here we use uniform and static electric fields to demonstrate locomotion of a biflagellated sphere at low Re via Quincke rotation. These Quincke swimmers exhibit three different forms of motion, including a self-oscillatory state due to elastohydrodynamic–electrohydrodynamic interactions. Each form of motion follows a distinct trajectory in space. Our experiments and numerical results demonstrate a method to generate, and potentially control, the locomotion of artificial flagellated swimmers.
AB - In the limit of zero Reynolds number (Re), swimmers propel themselves exploiting a series of nonreciprocal body motions. For an artificial swimmer, a proper selection of the power source is required to drive its motion, in cooperation with its geometric and mechanical properties. Although various external fields (magnetic, acoustic, optical, etc.) have been introduced, electric fields are rarely utilized to actuate such swimmers experimentally in unbounded space. Here we use uniform and static electric fields to demonstrate locomotion of a biflagellated sphere at low Re via Quincke rotation. These Quincke swimmers exhibit three different forms of motion, including a self-oscillatory state due to elastohydrodynamic–electrohydrodynamic interactions. Each form of motion follows a distinct trajectory in space. Our experiments and numerical results demonstrate a method to generate, and potentially control, the locomotion of artificial flagellated swimmers.
KW - Low-Reynolds-number swimmer | Quincke rotation | motility
UR - http://www.scopus.com/inward/record.url?scp=85110308270&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85110308270&partnerID=8YFLogxK
U2 - 10.1073/pnas.2022000118
DO - 10.1073/pnas.2022000118
M3 - Article
C2 - 34266946
AN - SCOPUS:85110308270
SN - 0027-8424
VL - 118
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
IS - 29
M1 - e2022000118
ER -