Kake Educational Institution

Norio Akiyama

Tsukio Ohtani

A gas sensor containing counter electrodes and a semiconductor nanowiredisposed between the counter electrodes, wherein the semiconductor nanowireis in a state where light can be irradiated, which sensor measures changes in the electric current associated with adsorption of a gas to the semiconductor nanowire, wherein the electric current is generated by irradiation of light on the semiconductor nanowire with a voltage applied to the counter electrodes

Gas sensor and gas sensor array

A gas sensor array containing a gas flow path in which a gas to be analyzed flows, and a plurality of gas sensors set along the gas flowing direction of the gas flow path, wherein the gas sensors each has a constitution wherein semiconductor microcrystals that come into contact with the gas to be analyzed that flows in the above gas flow path are disposed between two electrodes.

Gas sensor array, gas analysis method, and gas analysis system

The invention provides a gas sensitive material made from microcrystalline selenium (preferably selenium nanowire) and a gas sensor having an element structure wherein the gas sensitive material is disposed between two electrodes. The invention allows for the kind of organic gas to be distinguished, because microcrystalline selenium reacts with organic gas molecules with high sensitivity at room temperature without being influenced by humidity, and the magnitude of change of the value of the current flowing at a fixed voltage varies depending on the kind of an organic gas to be sensed.

Growing community of inventors

Okayama, Japan

Norio Akiyama