Mechanical Engineering Graduate Seminar

Presentation: Soft robotics is an emerging discipline focused on developing machines composed of compliant materials that mimic the adaptability and dexterity of biological organisms. Unlike traditional rigid systems, soft robots can safely interact with humans and conform to complex, unstructured environments. This seminar presents the design, fabrication, and characterization of bioinspired soft robotic systems that employ Twisted and Coiled Artificial Muscles (TCAMs) and Liquid Crystal Elastomer (LCE) actuators to replicate the mechanics of muscular hydrostats such as octopus arms. During the initial phase of this work, individual prototypes capable of bending, extending, twisting, and compressing were developed to study and refine each deformation mode. Building on these results, subsequent efforts have focused on integrating multiple actuation modes within a single, modular continuum robot through a series of iterative designs. Novel manufacturing approaches improved actuator consistency and performance, which were evaluated through underwater actuation and cyclic fatigue testing. Collectively, these advancements establish a foundation for adaptive, multifunctional soft robotic systems with potential applications in biomedical devices, exploration, and human–robot interaction.

Presenter: Sean Maxson is a Ph.D. candidate in the Smart Multifunctional Material Systems Laboratory under the supervision of Professor Caterina Lamuta at the University of Iowa’s Department of Mechanical Engineering. His research focuses on artificial muscles and bioinspired soft robotics, with particular emphasis on Twisted and Coiled Artificial Muscles (TCAMs) and Liquid Crystal Elastomers (LCEs). Sean’s work explores the design and fabrication of octopus-inspired soft robotic systems, as well as the manufacturing and characterization of next-generation smart materials for adaptive motion. He holds a bachelor’s degree in biomedical engineering from the University of Iowa. Sean plans to pursue a career in the biomedical field developing assistive and rehabilitative technologies.