Virginia Tech Mechanical Engineering Annual Report 2019 Annual Report | Page 16

Lab studies new ‘living’ engineering material Sohan Kale Assistant Professor Research Focus: Mechanobiol- ogy of cells and tissues; Con- tinuum ther- momechanics; Computational mechanics; Multiscale modeling Advances in bioengineering have led to prom- ising technologies such as organs-on-chips, organoids, and bio-robots. These multicellular engineered living systems are built from cell and tissues, that are soft, dynamic, and live out-of-equilibrium. In the recently established ‘Mechanics of Living Materials Lab’, we develop theoretical models and computational tools to understand the coupled bio-chemo-mechanics of this new class of ‘living’ engineering materials. Dr. Kale’s past work was focused on mechanics of epithelial tissues. These are cohesive cel- lular sheets forming protective interfaces in our bodies. His theoretical modeling efforts, as a part of a collaborative team of researchers, led to the discovery of a novel behavior of epithelia termed as ‘active superelasticity’. Analogous to superelastic Nickel-Titanium alloys, these biologi- cal tissues were shown to undergo extreme reversible deformations at nearly constant tensions. Current research in his lab is focused on connecting the subcellular mechanics to tissue level emergent behaviors relevant in physiology and diseases. We aim to use these multiscale compu- tational frameworks to address fundamental questions in mechanobiology including cell motility, collective cell motion, tissue morphogenesis and growth. We aspire to use the predictive power of our computational platforms to control, manipulate, and engineer living materials. Legged robots enable access to locations too dangerous for people Assistant Professor Akbari Hamed’s research aims to develop intelligent, robust, and safe feedback control algorithms for agile, robust, and dynamic locomotion of legged robots in real-world environments. More than half of the Earth’s continent is unreachable to wheeled vehicles - this moti- vates the deployment of legged robots to enable the accessibility of these environments and thus bring robots into the real world. His research also aims to create distributed and decentralized feedback control algorithms for legged robots that cooperatively work with each other or people to achieve a variety of tasks in complex environments. The theoretical results are experimentally evaluated on advanced quadrupedal robots in his lab. The goal is to advance the control technology in deploying agile robots that can assist, or stand in for, humans in dangerous situations such as industrial accidents or natural disasters. This research is supported by NSF. 16 Revised and Corrected, Nov. 2019 Kaveh Akbari Hamed Assistant Professor Research Focus: Control theory; Robotics; Cyber-physical systems, opti- mization, and hybrid dynami- cal systems