Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 8 of 8 for “"Hydrogen sensor"”.
-
A Microelectromechanical-Cantilever Hydrogen Sensor with Palladium-Driven Bending and Piezoresistive Readout
Hydrogen gas (H₂) is considered a promising source of environmentally friendly and sustainable energy of benefit for global decarbonization. However, given the flammable and explosive nature of H₂, highly sensitive and selective detection systems with fast response are needed to enable leakage …
-
Detection of Hydrogen in a Two-Phase Cryogen Flow Stream with Thermal Protection Design Configurations
<p>All commercial liquid-propelled rockets use hydrogen as means to reach outer space. These rocket boosters are tested on the ground and use hydrogen as means of purging the remaining explosive gasses left in the test tanks. To conserve helium, a non-renewable resource, a test fixture was …
-
Fiber optic hydrogen sensing utilizing facet etched palladium nano-apertures
… results for a new type of fiber optic hydrogen sensor based on facet etched nano-apertures in palladium films. Palladium is known to absorb hydrogen, resulting in a change in the optical and structural properties of the film which can be probed by measuring the transmission through the …
-
Palladium coated edge-emitting lasers for hydrogen sensing applications
… fuel sources are being actively pursued. Hydrogen shows considerable promise due to its virtually unlimited supply, energy conversion efficiency, and neutral impact on the environment. However, due to the flammability of hydrogen gas in concentrations as low as 4%, reliable sensors capable …
-
Development of predictable palladium based optomechanical hydrogen sensors
… to its use as an energy storage medium or fuel, hydrogen gas has a variety of commercial applications such as methanol and ammonia production. Given the volatility and flammability of hydrogen, as well as its small molecular size, fast and accurate sensors capable of operating in a variety of …
-
Dissolved Gas Analysis of Insulating Transformer Oil Using Optical Fiber
… discovering new ways integrate optical fiber sensors into high voltage transformers. This thesis is a continuation of that research by attempting to improve sensor sensitivity for hydrogen and acetylene gasses. Of note is the fabrication of new hydrogen sensing fiber for operation around a …
-
Synthesis, Fabrication and Surface Modification of Nanocrystalline Nickel Oxide for Electronic Gas Sensors
Recently, metal oxide gas sensors have attracted much attention in connection with monitoring of combustible and toxic gases because of their higher sensitivity, fast response and recovery times, low power consumption, and low fabrication cost. Nickel oxide (NiO) is a wide band gap and p-type …
-
Trace Water Measurement Standards in Process and Energy Gases
L'abstract è presente nell'allegato / the abstract is in the attachment