Ultrasound‐driven triboelectric nanogenerators (US‐TENGs) offer an innovative solution for transcutaneous power transfer, with the potential to enable battery‐free, permanently implantable electronics. However, research to date has primarily demonstrated only fragmentary functionalities for these applications. This work presents the simultaneous transmission of acoustic power and precise acoustic information using a double‐electrode US‐TENG, enabling a battery‐free implant controlled via ultrasound. High and sustained output from a US‐TENG is crucial for operating the versatile system; therefore, a novel triboelectric membrane with a top electrode incorporating a gold‐polymer intermixing layer has been designed. Reversible micro‐cracks form in the intermixing layer, ensuring electrical connectivity under high‐frequency strain. In vivo experiments confirm that the system is biocompatible and can be reliably operated inside living rats. These achievements represent a significant step toward realizing multifunctional implantable electronics that can be reliably powered and controlled by ultrasound.

中文翻译：

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基于具有金属-聚合物混合层的可持续摩擦纳米发电机的声学可调谐无电池植入物


超声驱动的摩擦纳米发电机 （US-TENGs） 为经皮动力传输提供了一种创新的解决方案，有可能实现无电池、永久植入的电子设备。然而，迄今为止的研究主要表明这些应用程序的功能不完整。这项工作展示了使用双电极 US-TENG 同时传输声功率和精确声学信息，从而通过超声控制无电池植入物。US-TENG 的高持续输出对于运行多功能系统至关重要;因此，设计了一种新型的摩擦电膜，其顶部电极包含金-聚合物混合层。在混合层中形成可逆的微裂纹，确保在高频应变下的电气连接。体内实验证实，该系统具有生物相容性，可以在活体大鼠体内可靠地运行。这些成就代表着朝着实现可由超声可靠供电和控制的多功能植入式电子设备迈出了重要一步。