Tohoku Univ. Technology：Creation of high-power piezoelectric polymers：T25-048
New technology to modify piezoelectricity while maintaining mechanical properties of polybilinidene fluoride (PVDF)
Piezoelectric sensors made of piezoelectric ceramics and polymers have been developed. Among them, polyvinylidene fluoride (PVDF) is a semicrystalline polymer composed of (CH2-CF2) repeating structures. It has attracted attention because of its low cost and excellent flexibility. While further improvement of piezoelectric properties is required, improvement of materials without compromising their flexibility has been studied. However, materials that meet the needs of the industry have not been developed. As a result of repeated research, we succeeded in developing a modified PVDF with significantly improved piezoelectric properties. The development of a new material was made possible by adding additives to the raw material PVDF. We confirmed that the piezoelectric properties of this material were increased without losing the excellent flexibility of the conventional material. This paves the way for the development of more sensitive sensors, which are expected to be applied in the medical device and robot industries.
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The revenue generated from technology transfer is reinvested into universities and researchers as new research funding, which is used to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will actively promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by concluding basic technology transfer agreements with the following universities (as of April 1, 2026): - 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 - Showa Medical University - Asahikawa Medical University
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