机构：[1]Department of Biomedical Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, China.[2]Department of Radiology and Nuclear Medicine, Xuanwu Hospital, Capital Medical University, 45 Changchun Street, Beijing 100053, China.医技科室放射科首都医科大学宣武医院[3]Beijing Key Laboratory of MRI and Brain Informatics, Xuanwu Hospital, Capital Medical University, 45 Changchun Street, Beijing 100053, China.首都医科大学宣武医院[4]Institute of Wearable Technology and Bioelectronics, Qiantang Science and Technology Innovation Center, 1002 23rd Street, Hangzhou 310018, China.[5]Flexible Wearable Technology Research Center, Institute of Flexible Electronics Technology of Tsinghua, 906 Yatai Road, Jiaxing 314033, China.
Magnetic resonance imaging (MRI)-safe implantable wireless energy harvester offers substantial benefits to patients suffering from brain disorders, hearing impairment, and arrhythmias. However, rigid magnets in cutting-edge systems with limited numbers of rotation axis impose high risk of device dislodgement and magnet failure. Here, a flexible omnidirectional rotating magnetic array (FORMA) and a flexible MRI-safe implantable wireless energy-harvesting system have been developed. Miniaturized flexible magnetic balls 1 millimeter in diameter achieved by molding three-dimensional printed templates can rotate freely in elastomer cavities and supply a magnetic force of 2.14 Newtons at a distance of 1 millimeter between an implantable receiver and a wearable transceiver. The system can work stably under an acceleration of 9g and obtain a power output of 15.62 decibel milliwatts at a transmission frequency of 8 megahertz. The development of the FORMA may lead to life-long flexible and batteryless implantable systems and offers the potential to promote techniques for monitoring and treating acute and chronic diseases.
基金：
This work is supported by the Key Research and Development Program of Zhejiang
Province under grant no. 2021C05005, the Beijing Natural Science Fund under grant no.
Z220015, and the National Natural Science Foundation of China under grant no. 61604108.
通讯机构：[1]Department of Biomedical Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, China.[4]Institute of Wearable Technology and Bioelectronics, Qiantang Science and Technology Innovation Center, 1002 23rd Street, Hangzhou 310018, China.[5]Flexible Wearable Technology Research Center, Institute of Flexible Electronics Technology of Tsinghua, 906 Yatai Road, Jiaxing 314033, China.
推荐引用方式(GB/T 7714)：
Zhou Mingxing,Mao Sui,Wu Ziyue,et al.A flexible omnidirectional rotating magnetic array for MRI-safe transdermal wireless energy harvesting through flexible electronics[J].SCIENCE ADVANCES.2023,9(33):doi:10.1126/sciadv.adi5451.
APA：
Zhou Mingxing,Mao Sui,Wu Ziyue,Li Ya,Yang Zhen...&Huang Xian.(2023).A flexible omnidirectional rotating magnetic array for MRI-safe transdermal wireless energy harvesting through flexible electronics.SCIENCE ADVANCES,9,(33)
MLA：
Zhou Mingxing,et al."A flexible omnidirectional rotating magnetic array for MRI-safe transdermal wireless energy harvesting through flexible electronics".SCIENCE ADVANCES 9..33(2023)
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