Tohoku University Technology: Functional piezoelectric material: T21-003
It is possible to harvest energy from vibration as well as impact
Energy harvesting devices that can convert mechanical energy such as heat, wind, and vibration etc. into electrical energy are attracting attention. Piezoelectric material is one of the materials for energy harvesting. It is sensitive to small strains and can be expected to have high power density and voltage. In addition, because it can be made compact, it is the optimum solution as a power supply source of various sizes. The invention is a flexible piezoelectric material formed by mixing piezoelectric polymer and piezoelectric ceramics. Conventionally, piezoelectric ceramics are affected by fatigue cracks when repeatedly subjected to a load, so that it is difficult to secure flexibility by itself. The invention does not require any countermeasures and has an advantage that the applicable range can be expanded.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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