Agency of Industrial Science and Technology

Ministry of International Trade & Industry

Futaba Denshi Kogyo K.k.

Susumu Takada

Shigeo Itoh

Teruo Watanabe

Hiroshi Nakagawa

Kazuhiko Tsuburaya

Yoshihiko Hirata

A field emission element including an electrode structure made of a thin film exhibiting increased adhesive strength. A thin film of niobium nitride (NbN) is formed on a glass substrate by sputtering or the like. The NbN film exhibits increased adhesive strength to a degree sufficient to prevent etching for formation of the film into electrodes from causing peeling of the film.

Vacuum airtight device having NbN electrode structure incorporated

A Josephson logic gate device comprises a closed loop of four Josephson junctions, a gate line and a ground line connected to the closed loop at symmetrically opposite points, and a control line connected to the closed loop at the intermediate joint between the gate line and ground line. This logic gate produces a switching function in which the gate current fed to the gate line is steered from the gate to the load by the transition between the zero-voltage state and the voltage state of the device when a control current is supplied into the control line.

Josephson logic gate device

Growing community of inventors

Tsukuba, Japan

Susumu Takada