Research Activities

Hydrogen sensor

"Gas Sensing by Surfaces and Interfaces of Metal Oxide Single Crystals"

Hydrogen is attracting attention as a clean energy source, and there is a growing demand for hydrogen gas leak detection technology in the production, transportation and use of hydrogen. Currently, oxide semiconductor gas sensors are used for highly sensitive detection of hydrogen, but their gas selectivity is a problem in principle.

Using a single crystal of a metal oxide semiconductor as a sensing material, we will develop a gas sensor capable of detecting both hydrogen and other gases with high sensitivity while distinguishing hydrogen from other gases by using the characteristics of the surface and interface. For this purpose, we will develop an in-situ ion beam analysis method that enables surface analysis during gas sensor operation.

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