Jianxin Zhao, Jialin Hao, Dongdong Chen, Chunlong Fei, Zhaoxi Li, Kezheng Chang, Zhipeng Zhang, Wanlong Qi, Changhong Li, Yintang Yang. "Self-focusing high-frequency ultrasonic transducers for non-destructive testing applications." Scientific Reports, 2025. doi:10.1038/s41598-025-93195-y