Tianjun Han

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About

Tianjun Han is a rising researcher in bio-inspired fluid dynamics and marine locomotion, whose work explores how undulatory and oscillatory fin kinematics affect lift generation in ray-inspired fins. In their most-cited study, Han investigates how wavenumber—the number of waves along a fin—influences lift production near a substrate, such as the seafloor. This research reveals that rays and skates naturally adjust their fin motion depending on proximity to the ground: adopting more undulatory, high-wavenumber strokes near the substrate, and more oscillatory, low-wavenumber strokes in open water. By systematically analyzing these kinematic differences, Han provides key insights into the hydrodynamic mechanisms that enable efficient near-ground swimming, with implications for the design of bio-inspired underwater vehicles and robotic fins. Although early in their career, Han’s work has already garnered attention, with the study cited once in 2025, signaling growing interest from the bio-robotics and marine biology communities. Their contributions bridge fundamental fluid mechanics and applied engineering, offering a foundation for future innovations in aquatic locomotion.