6533b85afe1ef96bd12b9f5c

RESEARCH PRODUCT

Hydrogen sensor based on a palladium-coated fibre-taper with improved time-response

Jose L. CruzMiguel V. AndrésAntonio DiezDobryna Zalvidea

subject

Phase transitionRange (particle radiation)Optical fiberMaterials scienceLaser diodeMetals and AlloysAnalytical chemistrychemistry.chemical_elementCondensed Matter PhysicsHydrogen sensorSurfaces Coatings and FilmsElectronic Optical and Magnetic Materialslaw.inventionchemistryTransmission (telecommunications)lawMaterials ChemistryElectrical and Electronic EngineeringComposite materialInstrumentationLayer (electronics)Palladium

description

Abstract We report an experimental study of the response of a hydrogen sensor, based on a palladium-coated tapered optical fibre, at different temperatures in the range −30 to 80 °C. We have studied the transmission, the time-response and the initial response velocity, being able to correlate these measurements with the pressure–composition isotherms of the Pd–H system and its phase transitions. Heating of the palladium layer optically with an auxiliary laser diode permits to improve the sensor's time-response at low temperatures.

yearjournalcountryeditionlanguage
2006-03-01Sensors and Actuators B: Chemical
https://doi.org/10.1016/j.snb.2005.05.010