Cui, Meng, Liyun Zhen, Xingyu Bai, Lihan Yu, Xuhao Chen, Jingquan Liu, Qingkun Liu, and Bin Yang. “An Ultrasonic Microrobot Enabling Ultrafast Bidirectional Navigation in Confined Tubular Environments”. Nano-Micro Letters 18 (August 25, 2025): 43. Accessed September 2, 2025. https://www.nmlett.org/index.php/nml/article/view/2170.