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Title: Stability of Soft Magnetic Helical Microrobots
Nano/microrobotic swimmers have many possible biomedical applications such as drug delivery and micro-manipulation. This paper examines one of the most promising classes of these: rigid magnetic microrobots that are propelled through bulk fluid by rotation induced by a rotating magnetic field. Propulsion corresponds to steadily rotating and translating solutions of the dynamics of such microrobots that co-rotate with the magnetic field. To be observed in experiments and be amenable to steering control, such solutions must also be stable to perturbations. In this paper, we analytically derive a criterion for the stability of such steadily rotating solutions for a microrobot made of soft magnetic materials, which have a magnetization that depends on the applied field. This result generalizes previous stability criteria we obtained for microrobots with a permanent magnetization.  more » « less
Award ID(s):
1805847 1650968 1435652
PAR ID:
10174803
Author(s) / Creator(s):
; ; ;
Date Published:
Journal Name:
Fluids
Volume:
5
Issue:
1
ISSN:
2311-5521
Page Range / eLocation ID:
19
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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