首页|Ultra-low frequency magnetic energy focusing for highly effective wireless powering of deep-tissue implantable electronic devices

Ultra-low frequency magnetic energy focusing for highly effective wireless powering of deep-tissue implantable electronic devices

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The limited lifespan of batteries is a challenge in the application of implantable electronic devices.Existing wireless power technologies such as ultrasound,near-infrared light and magnetic fields cannot charge devices implanted in deep tissues,resulting in energy attenuation through tissues and thermal generation.Herein,an ultra-low frequency magnetic energy focusing(ULFMEF)methodology was developed for the highly effective wireless powering of deep-tissue implantable devices.A portable transmitter was used to output the low-frequency magnetic field(＜50 Hz),which remotely drives the synchronous rotation of a magnetic core integrated within the pellet-like implantable device,generating an internal rotating magnetic field to induce wireless electricity on the coupled coils of the device.The ULFMEF can achieve energy transfer across thick tissues(up to 20 cm)with excellent transferred power(4-15 mW)and non-heat effects in tissues,which is remarkably superior to existing wireless powering technologies.The ULFMEF is demonstrated to wirelessly power implantable micro-LED devices for optogenetic neuromodulation,and wirelessly charged an implantable battery for programmable electrical stimulation on the sciatic nerve.It also bypassed thick and tough protective shells to power the implanted devices.The ULFMEF thus offers a highly advanced methodology for the generation of wireless powered biodevices.

ultra-low frequencytranscutaneous energy transmissionelectromagnetic generatorimplantable electronic devicedeep tissue

Yuanyuan Li、Zhipeng Chen、Yuxin Liu、Zijian Liu、Tong Wu、Yuanxi Zhang、Lelun Peng、Xinshuo Huang、Shuang Huang、Xudong Lin、Xi Xie、Lelun Jiang

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Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument,School of Biomedical Engineering,Shenzhen Campus of Sun Yat-Sen University,Shenzhen 518107,China

School of Mechanical and Electrical Engineering,Guangzhou University,Guangzhou 510006,China

State Key Laboratory of Optoelectronic Materials and Technologies,Guangdong Province Key Laboratory of Display Material and Technology,School of Electronics and Information Technology,Sun Yat-Sen University,Guangzhou 510006,China

国家自然科学基金国家自然科学基金国家自然科学基金深圳市科技计划深圳市科技计划Shenzhen Sustainable Development Special Project广东省自然科学基金国家重点研发计划国家重点研发计划中央高校基本科研业务费专项Independent Fund of the State Key Laboratory of Optoelectronic Materials and TechnologiesIndependent Fund of the State Key Laboratory of Optoelectronic Materials and Technologies

T22250105197559732171399JCYJ20220818102201003JCYJ20220818100001002KCXFZ202307310945000012022B15150200112021YFF12007002021YFA0911100Sun Yatsen University 22dfx02Sun Yatsen UniversityOEMT-2022-ZRC-04

2024

10.1093/nsr/nwae062

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ISSN：
年,卷(期)：2024.11(5)
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