Shoji Kakio

Title: The Innovations of Shoji Kakio: A Pioneer in Surface Acoustic Wave Technology

Introduction

Shoji Kakio, an accomplished inventor based in Yamanashi, Japan, has made significant contributions to the field of surface acoustic wave technology. With a total of 8 patents to his name, Kakio has demonstrated exceptional ingenuity and problem-solving skills throughout his career. His work primarily focuses on the development of devices that utilize elastic waves, leading to advancements in various technological applications.

Latest Patents

Among his latest innovations, Kakio has developed a surface acoustic wave device that incorporates a piezoelectric substrate made from a single crystal of CaTa(GaAl)SiO. This device features an interdigital electrode crafted from aluminum, which is designed to generate a Love-wave-type shear-horizontal (SH) wave on the substrate's surface. An important characteristic of this device is that the normalized film thickness, calculated by dividing the thickness of the electrode by the wavelength of the SH wave, is 0.16 or less.

Additionally, Kakio's work includes an elastic wave device with a specialized piezoelectric layer, carrier substrate, and IDT (Interdigital Transducer) electrode. This elastic wave device effectively excites the main vibration of an SH mode by maintaining a precise relationship between the layer's thickness and the wavelength of the elastic wave, ensuring high performance. The arrangement of the acoustic anisotropy within the carrier substrate effectively minimizes unnecessary vibrations, enhancing the overall efficiency of the device.

Career Highlights

Kakio has built his career through his associations with well-respected organizations, such as The Japan Steel Works, Ltd. and the University of Yamanashi. His academic and professional experiences have allowed him to refine his expertise in acoustic wave technology, contributing to his numerous patent filings and the progression of his innovative concepts.

Collaborations

Throughout his career, Kakio has collaborated with several notable colleagues, including Kazuhito Kishida and Kouhei Kurimoto. These collaborations have played a vital role in advancing his research and expanding the applications of the technologies he has developed, leading to significant contributions to the fields of electronics and materials science.

Conclusion

Shoji Kakio's inventive spirit and dedication to advancing acoustic wave technology have solidified his reputation as a significant figure in the world of innovation. With his impressive portfolio of patents and collaborations, Kakio continues to push the boundaries of what is possible within the realms of elastic wave devices, ensuring that his work will impact future technological developments for years to come.