In a groundbreaking development, researchers at Penn State University have introduced a dual-energy harvesting device capable of simultaneously capturing energy from magnetic fields and ultrasound sources. This innovative technology converts ambient energy into electricity, providing a continuous power source for implantable biomedical devices such as pacemakers, insulin pumps, and neurostimulators. By harnessing two energy sources concurrently, the device can generate up to 300% more power than current state-of-the-art devices, potentially unlocking new applications in biomedical technology. news.engr.psu.edu
The device employs a two-step process to convert magnetic field energy into electricity. One layer is magnetostrictive, which converts a magnetic field into stress, and the other is piezoelectric, which converts stress into an electric field. This combination allows the device to efficiently transform magnetic fields into electric current. Additionally, the piezoelectric layer can simultaneously convert ultrasound energy into an electric current, enabling the device to harvest energy from both sources at once. This dual-energy harvesting approach not only increases power generation but also operates within the safety limits for human tissue, making it suitable for implantation. news.engr.psu.edu