Keiko Koga

Title: Innovations of Keiko Koga in Piezoelectric Materials

Introduction: Keiko Koga, an accomplished inventor based in Sagamihara, Japan, has made significant contributions to the field of materials science through her innovative work with piezoelectric polymeric materials. With a total of two patents to her name, her endeavors highlight the intersection of polymer chemistry and advanced technology.

Latest Patents: Koga's latest patents include a revolutionary piezoelectric polymeric material and a process for its production. This material consists essentially of a copolymer containing about 65 to 82 mol percent of vinylidene fluoride and about 35 to 18 mol percent of ethylene trifluoride. The unique production process involves forming the polymeric material into a film of desired thickness, heating it to a specific temperature range to achieve a heat-treated film, and poling it in an electrical field of 50 to 1,500 kilovolts per centimeter. These steps are critical in ensuring that the film attains a thickness extensional electromechanical coupling factor of at least 0.05, with preferred values greater than 0.2.

Career Highlights: Keiko Koga is currently employed at Toray Industries, Inc., where she has the opportunity to apply her extensive knowledge in polymer science. Her focus on piezoelectric materials has positioned her as a key figure in the development of innovative applications, particularly in the realm of ultrasonic transducers.

Collaborations: Throughout her career, Koga has collaborated with esteemed colleagues such as Hiroji Ohigashi and Toshiharu Nakanishi. Their combined expertise has undoubtedly propelled the research and development of piezoelectric technologies, contributing to advancements in industry practices.

Conclusion: Keiko Koga exemplifies the spirit of innovation through her groundbreaking work with piezoelectric materials. Her contributions not only enhance the fabric of materials science but also pave the way for new applications in technology, solidifying her legacy as a leading inventor in her field.