2021/03/23 by Humphrey Yang, Yang, Humphrey, Zeyu Yan +5
Engineering · #Advanced Materials and Mechanics #FOS: Computer and information sciences #H.5.m #Human-Computer Interaction (cs.HC) #Modular Robots and Swarm Intelligence #Soft Robotics and Applications
paper · pdf · doi:10.48550/arxiv.2103.12645
openalex publication_date 2021/03/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This paper presents FoamFactor, a novel material with tunable stiffness and compressibility between hydration states, and a tailored pipeline to design and fabricate artifacts consisting of it. This technique compounds hydrogel with open-cell foams via additive manufacturing to produce a water-responsive composite material. Enabled by the large volumetric changes of hydrogel dispersions, the material is soft and compressible when dehydrated and becomes stiffer and rather incompressible when hydrated. Leveraging this material property transition, we explore its design space in various aspects pertaining to the transition of hydration states, including multi-functional shoes, amphibious cars, mechanical transmission systems, and self-deploying robotic grippers.