Danran Li, Nina Wang, Tianyang Zhang, Guangxing Wu, Yifeng Xiong, Qianqian Du, Yunfei Tian, Weiwei Zhao, Jiandong Ye, Shulin Gu, Yanqing Lu, Dechen Jiang, Fei Xu. Label-free fiber nanograting sensor for real-time in situ early monitoring of cellular apoptosis[J]. Advanced Photonics, 2022, 4(1): 016001