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Speaker: Larissa S. Novelino, assistant professor, Department of Civil and Environmental Engineering at Rice Univeristy

Topic: Multifunctional Origami: From Architected Materials to Untethered Robots

Abstract
Origami has unfolded engineering applications in various fields, including electrical, civil, aerospace, biomedical, and materials engineering. These applications leverage origami shape-changing capabilities to create tunable, deployable, and multifunctional systems. Although origami has shown its potential as a design solution for unique systems, its feasibility is challenged by practical aspects. Thus, this presentation focuses on the challenges that must be addressed for origami-based applications, such as manufacturing and actuation strategies across scales. In manufacturing, we miniaturize origami toward the micro-scale and create architected materials with remarkable mechanical properties (e.g., stiffness and Poisson’s ratio tunable anisotropy, shape recoverability, and reversible auxeticity). For multifunctionality, we use origami to fabricate spatial filters – frequency selective surfaces. The fabricated structures feature the capability of on-the-fly reconfigurability to different specifications (multiple bands, broadband/narrowband bandwidth, wide- angle of incidence rejection). Finally, we introduce an untethered actuation solution with direct applications to origami-inspired robotics, morphing structures, metamaterials, and multifunctional devices. Our solution couples geometric bi-stability and magnetic-responsive materials, allowing instantaneous shape locking and local/distributed actuation with controllable speed, which can be as fast as a tenth of a second. We apply the proposed actuation strategy to create origami micro-robots with shape-changing, computing, and sensing capabilities.

Bio
Larissa S. Novelino is an assistant professor in the Department of Civil and Environmental Engineering at Rice University. She received her MS in civil engineering from the Pontifical Catholic University of Rio de Janeiro in 2015 and her PhD from the Georgia Institute of Technology in 2021. Both degrees were supported by the Brazilian National Council for Scientific and Technological Development. Her research focuses on applying origami principles to engineer deployable, reconfigurable, and multifunctional systems. Her work has been featured on the cover of Proceedings of the Royal Society A and Small.

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