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DF: Fachverband Dielektrische Festkörper

DF 13: Poster II: Electrical, mechanical and optical properties, nonlinear dielectrics

DF 13.7: Poster

Mittwoch, 24. März 2010, 15:00–17:30, Poster A

Metamaterial hydrogen sensor — •Patrick Mai and Harald Giessen — 4. Physikalisches Institut, Universität Stuttgart

Hydrogen has gained a substantial amount of interest in recent years and is considered to be a future carrier of energy. However, hydrogen can mix and ignite with air in a wide concentration range - hence monitoring is necessary.

We present an optical hydrogen sensor based on a metamaterial principle. Our stacked sample consists of a gold mirror and palladium nanowires. By tailoring the structural parameters one can tailor the optical properties and achieve a hydrogen-dependent response.

We present temperature- and time-dependent measurement results. Advantages and disadvantages over conventional hydrogen sensors are pointed out, and the development towards an all-optical hydrogen sensor with full seperation of detection electronics and measurement optics will be discussed.