All in-focus light field live with thousands of lenslets. - Jonghyun Ha; Masaru Kojima; Keita Takahashi 001; Takeshi Naemura (SIGGRAPH Posters, 2005)

Hygrobot: A self-locomotive ratcheted actuator powered by environmental humidity. - Jonghyun Ha; Minhee Lee; Keunhwan Park; Gee Ho Park; Tae Hyun Choi; Kyu-Jin Cho; Ho-Young Kim (Sci. Robotics, 2018)