The first technology can compete with piezoelectricity to harvest ultrasound energy for powering medical implants

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2019,（21）
• 页码范围: 1565-1566
• 页数: 2页
• 语种: 英文

摘要

Sustainable operation of implanted medical devices is essential for clinic applications.However,limited battery capacity is a key challenge for most implantable medical electronics [1].Higher-capacity battery is not an ideal choice,because battery capacity is usually linearly dependent on battery volume [2].New energy harvesters have been developed as promising alternative solutions,which extracted energy from the ambient environment and biosystem for powering implantable devices [3].However,the energy reclaimed from body and ambient environment also have power limitation,such as thermal gradient and bioelectric potential.Delivery ultrasound or RF energy into the body and generate electrical power by a converter is a reliable solution.