|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Biological Materials Science
||Nature’s Soft Robot: The Chiton Radula
||Jung-Eun Lee, Wen Yang, John Michael Connelly, Devis Montroni, Robin James, Taifeng Wang, Li Xing, Pablo Zavattieri, David Kisailus
|On-Site Speaker (Planned)
Chitons have existed for over 400 million years and have a relatively good fossil record. Their ability to survive originates, in part, from the well-developed feeding apparatus called a radula. This light weight and flexible structure integrates both soft and stiff components, similar to the bone-tendon-muscle system, including ultrahard teeth, that are used to scrape algae from intertidal rocks. Here, we will show the specific elements and their hierarchical assembly that enable the movement of this radular structure during feeding. Specifically, we describe the micro and macro-architectures that enable continuous folding and unfolding from the mouth while still supporting force transduction to rocky substrates. We will describe the mechanisms that provide protection to the chiton’s ability to feed and ensure its survival. Understanding these design features may help lead us to next generation multifunctional soft robotics that can be used in subterranean excavation, search and rescue operations and biomedical devices.
||Mechanical Properties, Characterization, Biomaterials