Waseda University

Naonobu Shimamoto

Masahiro Yanagisawa

Tetsuya Osaka

Takuya Nakanishi

Mikiko Saito

There is provided a novel optical sensor utilizing a surface plasmon resonance technique which is capable of detecting a substance to be detected with high sensitivity independently of a wavelength of irradiated light and is capable of obtaining information, other than a refraction index, on the substance to be detected. At the center of a surface of a metallic filmwhich is formed on a substrate and has no aperture, a circular depressionwith a diameter of 0.1 to 250 nm is formed and with the depressiondefined as a center, a plurality of depressionsare concentrically formed at intervals of 450 to 530 nm.

Growing community of inventors

Tokyo, Japan

Naonobu Shimamoto