文献类型：期刊文献

英文题名：A High-SNR Wearable Respiratory Monitoring System with Directional Airflow Sensing Enabled by Triple-Asymmetric Magnetic Microcolumn Arrays

作者：Tian, Jingyu[1];Wang, Yijing[1];Zhang, Cuiling[1];Zhao, Jingye[1];Zhang, Qi[1,2];Xu, Zhe[1];Zhang, Yue[3];Ye, Zhilu[1];Zhang, Xiaohui[1]

第一作者：Tian, Jingyu

通信作者：Zhang, XH[1]

机构：[1]Xi An Jiao Tong Univ, Ctr Mitochondrial Biol & Med,Minist Educ, State Ind Educ Integrat Ctr Med Innovat,Int Joint, Sch Life Sci & Technol,State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China;[2]Gansu Univ Chinese Med, Sch Med Informat Engn, Lanzhou 730000, Peoples R China;[3]Xi An Jiao Tong Univ, Engn Res Ctr Spin Quantum Sensor Chips,Key Lab, State Ind Educ Integrat Ctr Med Innovat,Minist Edu, Univ Shaanxi Prov,State Key Lab Mfg Syst Engn,Elec, Xian 710049, Peoples R China

第一机构：Xi An Jiao Tong Univ, Ctr Mitochondrial Biol & Med,Minist Educ, State Ind Educ Integrat Ctr Med Innovat,Int Joint, Sch Life Sci & Technol,State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

通信机构：[1]corresponding author), Xi An Jiao Tong Univ, Ctr Mitochondrial Biol & Med,Minist Educ, State Ind Educ Integrat Ctr Med Innovat,Int Joint, Sch Life Sci & Technol,State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China.

年份：2026

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001837547300001)】；

语种：英文

外文关键词：open-path airflow sensing; directional airflow detection; magnetic microcolumn array; wearable respiratory monitoring; sleep disordered breathing; magnetomechanical transduction

摘要：Sleep disordered breathing (SDB) calls for the continuous and reliable monitoring of respiratory airflow. In clinical practice, polysomnography (PSG) commonly measures nasal airflow using cannulas or masks that confine the flow path, which often reduce comfort and may disturb natural sleep. Measuring airflow directly in open air would be more convenient, but it is prone to interference from ambient airflow, temperature, and humidity, and most existing sensors do not provide information on flow direction. Here, we report a directional open-path respiratory airflow sensor based on a triple-asymmetric magnetic microcolumn array (TAMMA) and further demonstrate its integration into a wearable eye-mask platform. The structure combines a magnetic top segment with a flexible support and introduces asymmetry in geometry and spatial arrangement. As a result, the array responds strongly to airflow normal to the sensor while showing minimal response to parallel disturbances, which improves robustness in practical environments. The sensor detects airflow down to similar to 5 L/min over a working range of 5-40 L/min, with two separate linear response ranges of 5-20 and 20-40 L/min, both with R-2 = 0.99 and a signal-to-noise ratio up to 41 dB. After establishing the sensor-level directional airflow sensing performance, we integrated the TAMMA sensor with miniaturized electronics and wireless transmission to construct a proof-of-concept eye-mask system for sleep respiratory monitoring. The system distinguishes inhalation from exhalation, records respiratory airflow waveforms during sleep, and captures airflow features associated with abnormal breathing patterns, including hypoventilation and apnea-like events. This work establishes a wireless magnetic sensing strategy for high-SNR, direction-resolved open-path respiratory airflow detection and provides a feasible platform for future home-based sleep respiratory monitoring.