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Kim-Ngoc-Khanh Nguyen is a leading researcher in bipedal robotics, specializing in balance control, fall recovery, and versatile locomotion. Her most impactful work, "Unified Balance Control for Biped Robots Including Modification of Footsteps with Angular Momentum and Falling Detection Based on Capturability" (29 citations), introduces a comprehensive five-strategy framework that integrates Zero Moment Point modulation, footstep and timing adjustments, angular momentum control, and fall detection—significantly advancing robot stability in dynamic environments. She also pioneered fall recovery with her 2021 paper (16 citations), generating efficient joint-angle trajectories for biped robots equipped with shell protectors, reducing computational demands. Notably, Nguyen developed a groundbreaking bipedal robot capable of both active walking (fully actuated) and semi-passive walking (with passive hip joints and springs), as detailed in her 2018 and 2019 works (7 and 6 citations). This achievement, enabled by innovative clutch and brake mechanisms, allows a single platform to explore diverse gait strategies. Her 2018 paper on robust, stretched-knee walking using joint-space motion control (5 citations) further demonstrates her expertise in avoiding kinematic singularities. With over 60 total citations, Nguyen’s work is essential reading for anyone advancing humanoid robot autonomy and safety.