Choong-Ho Rhee

University of Michigan–Ann Arbor, Samsung (South Korea)

Papers

Total Citations

H-Index

About

Choong-Ho Rhee is a leading figure in micro-robotics, with a focused expertise in thin-film piezoelectric actuators and multi-degree-of-freedom (m-DoF) mechanisms. His most impactful contribution, the 2012 paper "Multi-Degree-of-Freedom Thin-Film PZT-Actuated Microrobotic Leg," has garnered 24 citations for pioneering a novel approach to microrobotic locomotion. This work demonstrated that a single, compact appendage could generate a large range of motion (5°–40°), a critical breakthrough for enabling agile, insect-scale robots. Building on this foundation, his 2022 study on a piezoelectric, bistable out-of-plane actuator further refines the design of micro-robotic appendages. By employing thin-film lead-zirconate-titanate (PZT) unimorph bending beams with mismatched lengths, Rhee’s research addresses the challenge of achieving stable, high-displacement out-of-plane rotation—essential for tasks like jumping or climbing. His work consistently pushes the boundaries of actuator design, combining precise modeling with practical fabrication to create more capable, autonomous micro-robots. Rhee’s contributions are instrumental for students and researchers aiming to advance the next generation of miniature, high-performance robotic systems.