Hydrogen sensor using optical reflectance from porous silicon with a palladium thin film
Lowrie, Christopher G.
Earles, S. K.
Pozo de Fernandez, Maria E.
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Results of a hydrogen sensor based on light scattering from a porous silicon surface coated with a thin palladium film are discussed. Reflected light scattered from the rough surface of porous silicon surface with a thin palladium film is compared before and after exposure to hydrogen gas. After exposure to hydrogen gas the sensor's optical reflectance is decreased indicating the presence of hydrogen.