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Open AccessArticle

Self-Propelled Janus Microdimer Swimmers under a Rotating Magnetic Field

1
State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150001, China
2
Institute of Pharmacy, Sechenov University, 119991 Moscow, Russia
3
College of Control Science and Engineering, Zhejiang University, Hangzhou 310058, China
4
School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, China
5
Department of endocrinology, Harbin Medical University, Harbin 150001, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(12), 1672; https://doi.org/10.3390/nano9121672
Received: 1 October 2019 / Revised: 22 October 2019 / Accepted: 23 October 2019 / Published: 22 November 2019
(This article belongs to the Special Issue Advances in Micro/Nanomotors)
Recent strides in micro- and nanofabrication technology have enabled researchers to design and develop new micro- and nanorobots for biomedicine and environmental monitoring. Due to its non-invasive remote actuation and convenient navigation abilities, magnetic propulsion has been widely used in micro- and nanoscale robotic systems. In this article, a highly efficient Janus microdimer swimmer propelled by a rotating uniform magnetic field was investigated experimentally and numerically. The velocity of the Janus microdimer swimmer can be modulated by adjusting the magnetic field frequency with a maximum speed of 133 μm·s−1 (≈13.3 body length s−1) at the frequency of 32 Hz. Fast and accurate navigation of these Janus microdimer swimmers in complex environments and near obstacles was also demonstrated. This efficient propulsion behavior of the new Janus microdimer swimmer holds considerable promise for diverse future practical applications ranging from nanoscale manipulation and assembly to nanomedicine. View Full-Text
Keywords: Janus microdimer; propulsion mechanism; rotating magnetic field Janus microdimer; propulsion mechanism; rotating magnetic field
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MDPI and ACS Style

Yu, S.; Ma, N.; Yu, H.; Sun, H.; Chang, X.; Wu, Z.; Deng, J.; Zhao, S.; Wang, W.; Zhang, G.; Zhang, W.; Zhao, Q.; Li, T. Self-Propelled Janus Microdimer Swimmers under a Rotating Magnetic Field. Nanomaterials 2019, 9, 1672.

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