Palladium-coated plasmonic optical fiber gratings for hydrogen detection

In situ continuous monitoring of dissolved gases (N2, O2, CO2, H2) prior to H2 injection in an aquifer (Catenoy, France) by on-site Raman and infrared spectroscopies: instrumental assessment and geochemical baseline establishment

“…For a new site and in order to validate the experiment protocol, it will be necessary to carry out a comparison by regularly analyzing water samples by conventional chemical methods. In order to improve the industrialization of these monitoring techniques in the context of underground gas storage, additional promising technologies are actually in development such as ber optic network platforms 84,85 and/or sensors of the AlGaN/GaN doped semiconductor type HEMT (High Electron Mobility Transistors). 86…”

Wavelength-Dependent Nonlinear Absorption in Palladium Nanoparticles

“…In the case of some transition metal nanoparticles such as platinum and palladium, although their SPR is in the ultraviolet region, they still show interesting nonlinear optical properties in the visible region. Correspondingly, many researches on the nonlinearity of platinum and palladium nanomaterials have been carried out [3][4][5][6][7][8][9][10][11][12][13]. In 2002, S. L. Qu et al studied the optical properties of platinum nanoparticles (PtNPs) excited by a pulse of 8 ns and 532 nm.…”

“…In 2019, in order to optimize the stable electrochemistry behavior of platinum and efficient plasma excitation of gold, Rhernberger et al studied the electrochemistry and surface plasmon resonance spectroscopy of a sputtering film of Au/Pt [10]. In 2019, S. S. Cai et al used palladium film to realize SPR excitation of fiber grating, which provides a promising technology for hydrogen detection [11].…”

Palladium-coated narrow groove plasmonic nanogratings for highly sensitive hydrogen sensing

“…In contrast to traditional optical technologies, 3,4 hydrogen sensors that employ plasmonic properties of metallic nanostructures (such as surface plasmon resonance (SPR) and localized surface plasmon resonance (LSPR) [5][6][7][8][9][10][11][12][13][14][15][16][17] ) have recently gained a lot of attention. In the past few years, several plasmonic sensors for detection of hydrogen have been proposed such as SPR sensors based on prism coupling and grating coupling as well as optical bre based SPR sensors.…”