Ningjie Li

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About

Ningjie Li is a researcher in bio-inspired robotics and biomechanics, with a primary focus on the mechanics of quadruped locomotion. Her work investigates how flexible spine motion influences energy efficiency and stability in running animals and robots. In her most-cited paper, “Effect of Flexible Spine Motion on Energy Efficiency in Quadruped Running” (2017, 28 citations), Li demonstrated that incorporating spinal flexibility can significantly reduce the metabolic cost of transport in bounding gaits. She further explored this in “Effects of Spine Motion on Foot Slip in Quadruped Bounding” (2018), where she analyzed how sagittal-plane translation and bending of the spine affect foot–ground slip during high-speed running. By developing simplified sagittal-plane models of quadruped mammals, Li provided foundational insights into how spinal dynamics can improve both the energy economy and stability of legged robots. Her work bridges biology and engineering, offering design principles for more efficient, agile robotic systems. Though early in her career, Li’s contributions are already shaping the development of next-generation bio-inspired robots.