Indirect Nanoplasmonic Hydrogen Sensing
Typ
Examensarbete för masterexamen
Master's Thesis
Master's Thesis
Program
Physics (MPPHS), MSc
Publicerad
2024
Författare
Albert, Rémi
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
The critical role of hydrogen in the global energy transition and its hazardous na ture underscores the importance of developing efficient and reliable hydrogen sensing
technologies. This thesis explores the advancement of a hydrogen sensing method
using indirect Localized Surface Plasmon Resonance (LSPR), where we investigate
the alloying properties of small metal nanoparticles by means of solid-state dewet ting. The results from this thesis project are divided into three key parts. (i) A
proof-of-concept has been realized, showing that indirect LSPR can be used as a
means of monitoring hydrogen concentrations, using Ag 140x20nm nanodisks cov ered with much smaller (few nanometers) hydride-forming P d nanoparticles. (ii)
Building on the insights gathered from the previous part, alloying of P dAu through
solid-state dewetting has been investigated to replace the P d nanoparticles, yielding
more than a twofold increase in performance with comparison to (i) and 10 times
faster kinetics than its bulk equivalent (i.e. P dAu in direct LSPR). And finally (iii),
an attempt to make all depositions through the mask, which proved to be unsuc cessful and suggests using a hard sacrificial mask instead of the soft PMMA-based
one used in this work. Overall, this thesis highlights the promising potential of
indirect LSPR for hydrogen sensing, offering a foundation for future research and
technological development in this field.
Beskrivning
Ämne/nyckelord
Hydrogen, sensing, sensors, plasmonics.