Gao, Y., Li, J., Zhang, S., Yan, J., Zhang, Y., Liu, B., Guan, J., Wang, D., Deng, J., Liu, Y. (2026). Omnidirectional motion of an untethered tripodal microrobot using radial piezoelectric actuators. Nature Communications. https://doi.org/10.1038/s41467-026-72449-x