Additive Manufacturing of Magnetic Soft Materials and Magnetic Origami Robot
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Date
2021-05
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The Ohio State University
Abstract
The soft actuator has been using in many applications such as robotics, biochemical devices, and consumer products. Magnetic Soft Materials (MSMs) are one of the soft actuators that have functions of reversible shape transformation, untethered, fast, and shape controllable under applied magnetic fields. Magnetic shape memory polymers(M-SMPs), as one of the MSMs, have a new type of function: shape locking. With temperature changing, it can increase or decrease its Young's Modules to change its stiffness which both achieved shape-changing and energy saving. However, its thermal curing fabrication method limits its design shape only to simple geometry shapes. Here, with our photo-curing method and developed multimaterial printing technology, we have designed complex structures contain both M-SMPs and MSMs. Under thermal and magnetic actuation, the complex structures are capable of shape-changing and shape locking. It accomplished multiple usages relative to different shapes in one construction. To increases the functionality of our designs, we further analyze one of the unique patterns of origami, a paper-folding art, called Kresling origami. Kresling origami contains a propeller-like structure with two stable states: deployed state and folded state. With a magnetic-responsive plate on the side of the structure, our Kresling origami robot performs a swimming motion under a rotating magnetic field. In this article, both magnetic soft material and magnetic origami robot are separately analyzed, and we believe a combination with both technologies has great potentials in biomedical applications.
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Keywords
multimaterial printing, Kresling origami, soft robot, magnetic