Laser Nanostructuring for Diffraction Grating Based Surface Plasmon-Resonance Sensors

Abstract

The surface plasmon resonance properties of highly regular laser-induced periodic surface structures (HR-LIPSSs) on Si, functionalized with Au nanoparticles (NPs), were investigated. In particular, the spectral dependencies of polarized light reflectance at various angles of incidence were measured and discussed. It is found that the deposition of Au NPs on such periodically textured substrates leads to significant enhancement of the plasmon resonance properties, compared to that measured on planar ones. This effect can be used to improve the efficiency of localized-plasmon-resonance-based sensors.

Femtosecond laser-induced nano- and microstructuring of Cu electrodes for CO2 electroreduction in acetonitrile medium

“…Not long time ago, the technique of laser-induced periodic surface structures (LIPSS), known for its high regularity, has made significant advancements due to its ability to achieve nanometer uniformity and its single-step, maskless process with industrial production speed 38 . Many studies have showcased the diverse applications of LIPSS, such as in holography 39 , surface-enhanced Raman spectroscopy (SERS) 40 , tribology 41 , sensors 42 , plasmonics 43 , and others 44 , 45 . By finely adjusting different parameters, the use of ultrashort laser pulses enables the creation of a broad range of microstructures with complex configurations.…”

Surface Plasmon Resonance of Large-Size Ag Nanobars

“…Ag nanobars with smooth surfaces and controllable size can be synthesized by the polyol method in a low-cost and mass-produced way. Large-size Ag nanobars can be flexibly etched into various shapes to fabricate perfect nanoparticle arrays under the combination of the chemical synthesis method and lithography technology, thus leading to the broad-band tunable plasmon resonance, such as nanograting for label-free sensitive sensing [28], plasmonic oligomers for directional transmission of optical information at the nanometer scale [29], and even some complex coupled nanostructure arrays which could be used to develop dynamically reconfigurable metamaterials for promising applications in nanoparticle trapping and optical filters [30,31].…”

Impact of Ultrashort Laser Nanostructuring on Friction Properties of AISI 314 LVC

“…LIPSS are observed on most materials, from metals to graphene [8][9][10][11] and their importance has been demonstrated for various scientific, biomedical, and industrial applications [12,13]. The formation mechanism commonly attributed to regular periodic structures is said to be due to the interference of incident laser light with a wave propagating at the surface, resulting in a periodic intensity modulation that is imprinted into the fabric.…”