Hydrogen sensor based on optical and electrical switching

Fedtke, Petra; Wienecke, M.; Bunescu, Mihaela-C.; Pietrzak, Marlis; Deistung, Klaus; Borchardt, Erika

doi:10.1016/j.snb.2003.12.062

Cited by 46 publications

(23 citation statements)

References 14 publications

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“…Additionally, they recommend a capping layer of platinum to reduce atmospheric poisoning [16]. To test this approach, we use 10 nm CaF 2 (to ensure a continuous film) below a 20 nm palladium film, evaporated in a single vacuum process.…”

Section: Optimized Materials Systemmentioning

confidence: 99%

Long-term stability of capped and buffered palladium-nickel thin films and nanostructures for plasmonic hydrogen sensing applications

Strohfeldt¹,

Tittl²,

Gießen³

2013

Opt. Mater. Express

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Abstract:One of the main challenges in optical hydrogen sensing is the stability of the sensor material. We found and studied an optimized material combination for fast and reliable optical palladium-based hydrogen sensing devices. It consists of a palladium-nickel alloy that is buffered by calcium fluoride and capped with a very thin layer of platinum. Our system shows response times below 10 s and almost no short-term aging effects. Furthermore, we successfully incorporated this optimized material system into plasmonic nanostructures, laying the foundation for a stable and sensitive hydrogen detector.

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Section: Optimized Materials Systemmentioning

confidence: 99%

Long-term stability of capped and buffered palladium-nickel thin films and nanostructures for plasmonic hydrogen sensing applications

Strohfeldt¹,

Tittl²,

Gießen³

2013

Opt. Mater. Express

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“…[1][2][3] Hydrogen is a highly combustible colorless and odorless gas, extremely fl ammable in ambient atmospheric conditions at concentrations exceeding 4% by volume. [ 4 ] These properties are a deterrent for the adoption of hydrogen in industrial applications or in the exploitation of hydrogen-based technologies. This emphasizes the importance of the development of highsensitivity, inexpensive, reliable sensors to detect the presence of hydrogen gas.…”

mentioning

confidence: 99%

“…[2][3][4] In the presence of hydrogen, Pd undergoes a reversible phase transition from metal to metal hydride, a phase in which hydrogen is inserted within the Pd crystal lattice, providing a means to modify the optical properties of Pd-based sensors. There have been a number of attempts to utilize the excellent refractive index sensing capabilities of plasmonics since a hydrogen sensor was fi rst demonstrated using surface plasmon polaritons at the Pd/ air interface in the Kretschmann confi guration.…”

mentioning

confidence: 99%

Hydrogen Detected by the Naked Eye: Optical Hydrogen Gas Sensors Based on Core/Shell Plasmonic Nanorod Metamaterials

et al. 2014

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Gold-core/palladium-shell metamaterials for hydrogen detection are presented. The more than 30% change in both the reflection and transmission from the metamaterial layer that is observed when the layer is exposed to 2% hydrogen mixture is clearly noticeable to the naked eye as a change in the brightness of light transmitted by the metamaterial. This sensor should make a contribution to the safety of processes involving hydrogen.

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“…For instance, absorption in an optical fiber with the cladding removed or narrowed and covered with Pd film or alloy of Pd has been reported in the literature for hydrogen detection [1], [2]. Measurements of optical transmission through a thin film of Pd have also been explored [3], [4]. The expected change in reflectance of a Pd-coated mirror for a 1 atm H 2 at STP is approximately 25% by using the optical constants found in the literature [5].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen detection using surface plasmon resonance on palladium-siloxane films

Cavalcanti

Fontana

Azevedo

2011

2011 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC 2011)

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We investigate the performance of Pd films on siloxane underlayer for the development of H 2 sensors based on the surface plasmon resonance (SPR) effect. Reflectance measurements were carried out on sputtered Pd films on bare glass and on glass pre-coated with a siloxane layer, using Kretschmann's prism coupling configuration. For most of the range of Pd thicknesses investigated, the sensitivity for H 2 detection on bare glass was higher than that on Pd-siloxane, with the maximum sensitivity for the latter matching that on bare Pd. A direct comparison between the sensitivity data for the two multilayer configurations, indicates a trend of improved sensitivity for H 2 at higher thickness values for the siloxinated palladium films.

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Hydrogen sensor based on optical and electrical switching

Cited by 46 publications

References 14 publications

Long-term stability of capped and buffered palladium-nickel thin films and nanostructures for plasmonic hydrogen sensing applications

Long-term stability of capped and buffered palladium-nickel thin films and nanostructures for plasmonic hydrogen sensing applications

Hydrogen Detected by the Naked Eye: Optical Hydrogen Gas Sensors Based on Core/Shell Plasmonic Nanorod Metamaterials

Hydrogen detection using surface plasmon resonance on palladium-siloxane films

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