![]() ![]() The Kresling robotic arm with noncontact actuation provides a distinctive mechanism for applications that require synergistic robotic motions for navigation, sensing, and interaction with objects in environments with limited or constrained access. Such complex motions allow for functions mimicking octopus arms that grasp and manipulate objects. With the foundation of the basic integrated motion, scalability of Kresling assemblies is demonstrated through distributed magnetic actuation of double-digit number of units, which enables robotic arms with sophisticated motions, such as continuous stretching and contracting, reconfigurable bending, and multiaxis twisting. The four-unit Kresling assembly constitutes a robotic arm with a larger omnidirectional bending angle and stretchability. The two-unit Kresling assembly demonstrates the basic integrated motion that combines omnidirectional bending with deploying. We start from the single Kresling unit to delineate the working mechanism of the magnetic actuation for deploying/folding and bending. We investigate single- and multiple-unit robotic systems, the latter exhibiting higher biomimetic resemblance to octopus’ arms. The highly integrated motion of the robotic arms is attributed to inherent features of the reconfigurable Kresling unit, whose controllable bistable deploying/folding and omnidirectional bending are achieved through precise magnetic actuation. Inspired by the embodied intelligence observed in octopus arms, we introduce magnetically controlled origami robotic arms based on Kresling patterns for multimodal deformations, including stretching, folding, omnidirectional bending, and twisting. ![]()
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