Palladium Hydrogen Detection via Vernier–Based Archimedean Spirals

Hydrogen is a gas fuel used as a clean energy source, but it poses a high risk of explosion. Therefore, careful monitoring of leaks should be carried out for human safety. In this study, a demonstration to a sensor design has been presented with the aim of achieving a safer and more efficient hydrogen monitoring. Numerically conducted, the results of this study indicate the potential for hydrogen detection with a high Q-factor of $10^{4}$, sensitivity of 1.455nm/% hydrogen and a figure of merit (FOM) of 122. This is a FOM value of 100 times greater than its counterpart hydrogen sensing devices in the literature.