Sunao Yamada

Title: Innovations by Sunao Yamada: A Pioneer in Metal Fine Particles

Introduction

Sunao Yamada is an inventive mind hailing from Kasuya-gun, Japan, recognized for his significant contributions to the field of materials science, particularly in the development of metal fine particles. With a total of three patents to his name, his work has garnered attention in various research and industrial applications.

Latest Patents

The latest patents by Sunao Yamada illustrate his innovative approach to metal fine particles and the production methods associated with them. One of his key inventions focuses on metal fine particles with selective wavelength absorption characteristics in the visible light to near-infrared spectrum. These particles exhibit sharp absorption traits, minimally affecting surrounding wavelengths, thereby producing high-chroma tones. Specifically, the invention describes metal fine particles characterized by an aspect ratio ranging from 1.1 to 8.0 and a maximum absorption wavelength between 400 nm and 1,200 nm, with absorption coefficients at peak positions ranging from 6,000 to 20,000 L/mol·cm when measured in water.

Another significant contribution from Yamada is his method for manufacturing metal nanorods. This method involves several steps, including the addition of a reducing agent to a metallic salt solution, radiating light into the solution, and allowing it to grow in a dark environment. The versatility of this technique allows for the creation of metal nanorods through mixed solutions, demonstrating his innovative approach to materials fabrication.

Career Highlights

Sunao Yamada has worked with prominent institutions, including Mitsubishi Materials Corporation and Dai Nippon Toryo Co., Ltd., where he has made substantial contributions to research and development in materials science. His experience in these esteemed companies underscores his expertise and the practical application of his inventions.

Collaborations

Throughout his career, Yamada has collaborated with notable coworkers, including Yasuro Niidome and Koji Nishioka. These collaborations have likely facilitated the sharing of ideas and advancements in their respective fields, further enhancing the impact of their work.

Conclusion

As an inventor, Sunao Yamada has made significant strides in the realm of metal fine particles and nanotechnology. His innovative patents and collaborative efforts highlight his dedication to scientific advancement, solidifying his standing as a key figure in material science research.