Toru Nagashima

Title: Toru Nagashima: Innovator in Group III Nitride Technologies

Introduction

Toru Nagashima is a pioneering inventor based in Shunan, Japan, known for his significant contributions to the field of materials science, particularly in the development of Group III nitride single crystal substrates. With a total of 14 patents to his name, his innovations have played a key role in advancing semiconductor technologies.

Latest Patents

Nagashima's latest patents focus on the production and quality enhancement of Group III nitride single crystal substrates. One notable innovation outlines a substrate that features a first main face and an opposing back face, where the radius of curvature of the first main face is maintained at 10 meters or more. Additionally, his invention stipulates that the 1/1000 intensity width of an X-ray rocking curve at the center of the first main face should not exceed 1200 arcseconds. This level of precision is vital for ensuring the optimal performance of electronic devices that utilize these substrates.

Another patent details the structural composition of a Group III nitride single crystal substrate, which includes a main surface divided into an outer region and an inner region based on their distance from the center. This innovation emphasizes specific ratios concerning wave numbers gathered from micro-Raman spectra, promoting uniformity and efficiency in the produced substrates.

Career Highlights

Throughout his career, Toru Nagashima has collaborated with notable organizations such as Tokuyama Corporation and Tokyo University of Agriculture and Technology. His work at these institutions has allowed him to bridge academia and industry, facilitating research that leads to practical applications in technology.

Collaborations

Nagashima has had the privilege of working alongside esteemed colleagues, including Yoshinao Kumagai and Akinori Koukitu. Their collective expertise has undoubtedly enriched the quality and scope of their research endeavors, resulting in innovative solutions that benefit the wider scientific community.

Conclusion

Toru Nagashima's contributions to the field of Group III nitride technologies underscore the essential role of inventors in driving advancements in modern technology. His innovative patents and collaborations reflect a commitment to excellence and a vision for the future of semiconductor materials, positioning him as a significant figure in the landscape of contemporary inventors.