| CPC G01N 27/22 (2013.01) [G01N 33/0027 (2013.01)] | 19 Claims |

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1. A sensor, comprising:
a structure,
the structure including
a base layer including at least one selected from the group consisting of silicon, aluminum, and titanium, and at least one selected from the group consisting of oxygen and nitrogen;
a first layer;
a first film including a first film region; and
a first intermediate layer including a first partial region,
the first partial region being between the first layer and the first film region,
a volume of the first layer being changeable depending on a detection target around the structure,
the first film including silicon and oxygen, and
the first intermediate layer including at least one selected from the group consisting of Pd, Pt and Ti.
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