Ngk Insulators, Inc.

Nobuyuki Kokune

Minoru Imaeda

Kazuaki Yamaguchi

Shoji Sogo

Nobuhide Kato

Katsuhiro Imai

Yuichiro Imanishi

Yasuhiko Hamada

Akihiko Honda

Tetsuo Taniuchi

Yukihisa Takeuchi

Tsutomu Nanataki

Iwao Ohwada

Tatsuo Kawaguchi

Tomoya Horiuchi

Ryuichi Ohuchi

Disclosed is a gas sensor for controlling a concentration of oxygen and/or measuring NOx by allowing a current to flow through an ion-conductive member for conducting oxygen ion, by the aid of a current supply circuit, wherein the current, which is outputted from the current supply circuit, has a pulse waveform (current signal) having a constant crest value, and the current supply circuit comprises a rectangular wave-generating circuit for controlling a frequency of the current signal on the basis of an electromotive force generated in the ion-conductive member to which the current signal is supplied. Accordingly, it is possible to highly accurately measure the predetermined gas component while scarcely being affected by the electric noise or the like.

Gas sensor and method for controlling the same

An electron emitter has an electric field receiving member formed on a substrate, a cathode electrode formed on one surface of the electric field receiving member, and an anode electrode formed on the one surface of the electric field receiving member, with a slit defined between the cathode electrode and the anode electrode. The electric field receiving member is made of a dielectric material. The electron emitter also has a modulation circuit for modulating a pulse signal applied between the cathode electrode and the anode electrode based on a control signal supplied from a controller such as a CPU to control at least an amount of emitted electrons.

Electron emitter, method of driving electron emitter, display and method of driving display

An electron emitter has an emitter section formed on a substrate, a cathode electrode formed on one surface of the emitter section, and an anode electrode formed on the same one surface of the emitter section and cooperating with the cathode electrode in providing a slit. A pulse generation source applies a drive voltage between the cathode electrode and the anode electrode. The anode electrode is connected to GND (ground). The slit has a width in the range from 0.1 &#x3bc;m to 50 &#x3bc;m.

Electron emitter, drive circuit of electron emitter and method of driving electron emitter

A process is disclosed for continuously producing a single crystal by drawing downwardly a melt of a single crystal raw material, wherein a single crystal body grown from the melt is continuously pulled downwardly, and a plurality of single crystal products are continuously formed by intermittently cutting the single crystal body being downwardly moved.

Single crystal-growing method and apparatus

Single crystal-growing apparatus

Single crystal growing method

A process is disclosed for producing a film of an oxide type single crystal on a substrate of such an oxide type single crystal by epitaxially growing the oxide type single crystal on the substrate through contacting the substrate onto a melt in an overcooled state. The substrate of the oxide type single crystal is contacted with the melt held in a first furnace, and the substrate of the oxide type single crystal is held inside a second furnace separated from said first furnace, and the temperature of the substrate is adjusted in the second furnace. An oxide type single crystal film-producing apparatus is also disclosed.

Process and apparatus for the production of films of oxide type single

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Nagoya, Japan

Nobuyuki Kokune