Plasmonic Hydrogen Sensors

Hydrogen sensors based on plasmonic nanostructures with their plasmonic effect, metal-hydrogen interaction, working principle, and sensing properties are introduced in this review. The merit and demerit of different types of plasmonic nanostructures are summarized and potential development directions are proposed, aiming to inspire more ingenious designs and execution of plasmonics for advanced hydrogen sensors. AbstractHydrogen is regarded as the ultimate fuel and energy carrier with a high theoretical energy density and universality of sourcing. However, hydrogen is easy to leak and has a wide flammability range in air. For safely handling hydrogen, robust sensors are in high demand. Plasmonic hydrogen sensors (PHS) are attracting growing interest due to the advantages of high sensitivity, fast response speed, miniaturization, and high-degree of integration, etc. In this review, the mechanism and recent development (mainly after the year 2015) of hydrogen sensors based on plasmonic nanostructures are presented. The working principle of PHS is introduced. The sensing properties and the effects of resonance mode, configuration, material, and structure of the plasmonic nanostructures on the sensing performances are discussed. The merit and demerit of different types of plasmonic nanostructures are summarized and potential development directions are proposed. The aim of this review is not only to clarify the current strategies for PHS, but also to give a comprehensive understan...

Source: Small - May 14, 2022 Category: Nanotechnology Authors: Bin Ai, Yujing Sun, Yiping Zhao Tags: Review Source Type: research