Hydrogen has attracted attention as an alternative fuel source and as an energy storage
medium. However, the flammability of hydrogen at low concentrations makes it a safety …

We measured the height of Pd microdisks during H_2 exposure using epi-illumination
diffraction phase microscopy, a quantitative phase imaging technique for capturing …

A photonic hydrogen gas sensor is fabricated by etching a subwavelength aperture into an
optically thick palladium film deposited on the facet of an optical fiber. Upon adsorption of …

Simulation results and experimental measurements are presented for ridge waveguide edge-
emitting lasers with a palladium thin film integrated for hydrogen gas detection. The …

This chapter discusses the development of fiber optic hydrogen sensors. A motivation for
these sensors is given followed by an explanation of the underlying physics of the palladium …

We present detailed experimental results on a reflective fiber sensor that is capable of
accurately quantifying the hydrogen concentration over a wide dynamic range that spans …

Quantitative phase imaging (QPI) is a flourishing new field which has recently found
tremendous success in the life sciences. QPI utilizes not only the amplitude of the imaging …

In addition 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 …

Abstract Thin-film Fabry-Perot hydrogen sensors with various thicknesses of Palladium are
simulated, optimized, fabricated and tested. A reflection-transmission setup is built along …

As gas prices continue to rise and fossil fuels pollute our environment, various alternative
fuel sources are being actively pursued. Hydrogen shows considerable promise due to its …