压电薄膜传感器（Picoleaf™）

Pressure-based Detection of Heart and Respiratory Rates from Human Body Surface using a Biodegradable Piezoelectric Sensor
Ziqiang Xu, Akira Furui, Shumma Jomyo, Toshiki Sakagawa, Masanori Morita, Tsutomu Takai, Masamichi Ando, and Toshio Tsuji
Proceedings of 43rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC’21), pp. 5415–5418, Virtual Conference due to COVID-19, Nov 1–5, 2021.

Beat-to-beat Estimation of Peripheral Arterial Stiffness from Local PWV for Quantitative Evaluation of Sympathetic Nervous System Activity
Ziqiang Xu, Toshiki Sakagawa, Akira Furui, Shumma Jomyo, Masanori Morita, Masamichi Ando, and Toshio Tsuji
IEEE Transactions on Biomedical Engineering, Digital Object Identifier: 10.1109/TBME.2022.3154398, Date of publication: 25 February 2022 (SCI, IF=4.538)

Toward a Robust Estimation of Respiratory Rate using Cardiovascular Biomarkers_Robustness Analysis under Pain Stimulation
Ziqiang Xu, Toshiki Sakagawa, Akira Furui, Shumma Jomyo, Masanori Morita, Masamichi Ando, and Toshio Tsuji
IEEE Sensors Journal, doi: 10.1109/JSEN.2022.3165880. Date of publication: 08 April 2022