Figure 1 (IMAGE)

The University of Osaka

Figure 1

Caption

Schematic of hydrogen sensing using palladium nanoparticles. Without hydrogen present, the metallic palladium nanoparticles (orange dots) act as isolated islands, and electric current cannot flow easily across the device. In contrast, when the device is exposed to even a small amount of hydrogen, the hydrogen atoms can bridge the gaps between islands, creating a connected network that allows a large current to pass though (red lines).

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Osaka University

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