A research team from KIST and Korea University has developed a biocompatible ultrasonic receiver.
韩国科学技术研究院（KIST）和高丽大学的研究团队开发出一种生物相容性超声波接收器。
As demand grows for underwater and implantable medical electronics, ensuring a stable and continuous power supply has become increasingly important. Traditional wireless charging methods, such as electromagnetic induction and radio frequency-based systems commonly used in smartphones and earbuds, face several challenges.
随着水下和植入式医疗电子设备需求的增长，确保稳定持续的电力供应变得日益重要。传统无线充电方法（如智能手机和耳机常用的电磁感应和射频系统）面临多项挑战。
These include short transmission distances, low energy efficiency in biological tissues, and vulnerability to electromagnetic interference. To address these issues, researchers are turning to ultrasound as a promising alternative for wireless power transfer.
这些挑战包括传输距离短、生物组织中能量效率低以及易受电磁干扰。为解决这些问题，研究人员正将超声波视为无线电力传输的一种有前景的替代方案。
Ultrasound is more tissue-friendly and less absorbed by the body, making it a reliable option for powering implantable and skin-adherent devices. As a result, ultrasonic energy is emerging as a next-generation solution for wireless charging.
超声波对组织更友好且不易被人体吸收，使其成为为植入式和皮肤贴合设备供电的可靠选择。因此，超声波能量正成为下一代无线充电解决方案。
灵活的生物相容性解决方案
A research team led by Dr. Sunghoon Hur from the Electronic and Hybrid Materials Research Center at the Korea Institute of Science and Technology (KIST), along with Professor Hyun-Cheol Song of Korea University, has developed a biocompatible ultrasonic receiver that maintains consistent performance even when bent.
由韩国科学技术研究院（KIST）电子与混合材料研究中心的许成勋（Dr. Sunghoon Hur）博士和高丽大学的宋贤哲（Professor Hyun-Cheol Song）教授领导的研究团队，开发出一种即使弯曲也能保持稳定性能的生物相容性超声波接收器。
This flexible device addresses many of the shortcomings of existing wireless power transmission technologies while enhancing compatibility with the human body. The team also successfully demonstrated wireless battery charging using ultrasonic waves, marking a significant step toward practical and commercial applications of the technology.
这种柔性设备解决了现有无线电力传输技术的诸多不足，同时提高了与人体的相容性。研究团队还成功展示了利用超声波进行无线电池充电，标志着该技术向实际应用和商业化迈出了重要一步。
压电设计提升效率
In particular, the researchers dramatically improved the power conversion efficiency compared to conventional ultrasonic receivers by using high-efficiency piezoelectric materials and a unique structural design.
特别是，研究人员通过使用高效压电材料和独特的结构设计，显著提高了与传统超声波接收器相比的功率转换效率。
By designing a stretchable and biocompatible ultrasonic receiver that conforms closely to the curves of the human body while achieving stable power conversion, they were able to transmit 20 mW of power at a distance of 3 cm underwater and 7 mW at a depth of 3 cm from the skin. This is enough power to continuously power low-power wearable devices or implantable medical devices.
通过设计一种可拉伸且生物相容的超声波接收器，该接收器能紧密贴合人体曲线并实现稳定的功率转换，研究团队成功在水下 3 厘米距离传输 20 毫瓦功率，在皮肤下 3 厘米深度传输 7 毫瓦功率。这一功率足以持续为低功耗可穿戴设备或植入式医疗设备供电。
为医疗和海洋技术的未来供电
The findings are expected to help accelerate the commercialization of ultrasonic-based wireless charging technology for underwater electronics and implantable medical electronics. In particular, it is expected to provide a new paradigm for providing safe and continuous power to low-power medical devices such as implantable pacemakers, neurostimulators, and wearable sensors.
这些研究成果有望加速基于超声波的无线充电技术在水下电子设备和植入式医疗电子设备中的商业化进程。特别是，预计将为植入式心脏起搏器、神经刺激器和可穿戴传感器等低功耗医疗设备提供安全持续的电力供应提供新范式。
It is also expected to be applied not only to medical devices, but also to underwater drones and marine sensors that require long-term power supply.
该技术不仅有望应用于医疗设备，还可应用于需要长期供电的水下无人机和海洋传感器。
“Through this research, we have demonstrated that wireless power transmission technology using ultrasound can be applied practically,” said Dr. Sunghoon Hur at KIST. “We plan to conduct further research for miniaturization and commercialization to accelerate the practical application of the technology.”
韩国科学技术研究院的许成勋博士表示：“通过这项研究，我们证明了超声波无线电力传输技术可以实际应用。我们计划开展进一步的小型化和商业化研究，以加速该技术的实际应用。”
Reference: “A Body Conformal Ultrasound Receiver for Efficient and Stable Wireless Power Transfer in Deep Percutaneous Charging” by Iman M. Imani, Hyun Soo Kim, Minhyuk Lee, Seung-Bum Kim, So-Min Song, Dong-Gyu Lee, Joon-Ha Hwang, Jeyeon Lee, In-Yong Suh, Sang-Woo Kim, Jun Chen, Heemin Kang, Donghee Son, Jeong Min Baik, Sunghoon Hur and Hyun-Cheol Song, 26 March 2025, Advanced Materials.
DOI: 10.1002/adma.202419264
本文节选自SciTechDaily
原标题：This Ultrasonic Tech Can Charge Devices Through Water
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