Exploitation of Localized Surface Plasmon Resonance

Abstract

Recent advances in the exploitation of localized surface plasmons (charge density oscillations confined to metallic nanoparticles and nanostructures) in nanoscale optics and photonics, as well as in the construction of sensors and biosensors, are reviewed here. In particular, subsequent to brief surveys of the most‐commonly used methods of preparation and arraying of materials with localized surface plasmon resonance (LSPR), and of the optical manifestations of LSPR, attention will be focused on the exploitation of metallic nanostructures as waveguides; as optical transmission, information storage, and nanophotonic devices; as switches; as resonant light scatterers (employed in the different near‐field scanning optical microscopies); and finally as sensors and biosensors.

Large‐Area Low‐Cost Plasmonic Nanostructures in the NIR for Fano Resonant Sensing

“…Among the many unique features of plasmonic structures, this fi eld enhancement phenomenon has inspired researchers to construct refractive index sensors that utilize localized surface plasmon resonances (LSPRs). [1][2][3] Complex metallic nanostructures are able to support bright as well as dark optical modes. [ 4 ] When designed with the appropriate geometry and symmetry, metallic nanostructures have the potential to exhibit narrow Fano resonances due to destructive interference of the different modes.…”

Dual Color Plasmonic Pixels Create a Polarization Controlled Nano Color Palette

“…Determining which wavelengths of light are absorbed, scattered or transmitted, the resonant characteristics of a particular structure can be tuned by altering its geometry and composition. 4 Unlike conventional dye-doped polymers, these plasmonic filters can perform over length scales of <100 nm, making them particularly relevant to ultra-high resolution imaging applications, where the absorption limitations and fabrication challenges surrounding conventional filter miniaturization are proving to be a significant technical hurdle in delivering the next generation of image capture and display technologies. 1,5 Although in their infancy, plasmonic filters consisting of positive nanostructures have already been demonstrated as successful for full-color light separation in both transmissive and reflective systems, 3,[6][7][8][9][10] and have enabled colour image reproduction and display at the microscale; producing images with a 'printed' resolution that extends beyond the diffraction limit, and far exceeds the resolution limit of current color-printing technologies.…”

Microstructural evolution of Au/TiO2 nanocomposite films: The influence of Au concentration and thermal annealing

“…Localised surface plasmons, LSPs, are charge density oscillations, confined to metallic nanoparticles/nanostructures. In contrast to Surface Plasmons, SPs, which are longitudinal charge density oscillations that propagate along the surface of a conductor, LSPs do not propagate, and they can be used for some specific areas of scientific and/or technological interest [1].…”

“…The intense scattering and absorption of light by noble metal nanoparticles (NPs) and their sensitivity and dependence on the chemical and electromagnetic environments has been widely accepted to be of high scientific and technological interests, since these effects are not commonly observed in the responses of the correspondent bulk metals [1] [2].the strong absorption band in the visible region of the electromagnetic spectrum of some noble metals (e.g. gold or silver) is the result of some changes in the so-called localized surface plasmon resonance (LSPR) [1].…”

“…gold or silver) is the result of some changes in the so-called localized surface plasmon resonance (LSPR) [1]. Localised surface plasmons, LSPs, are charge density oscillations, confined to metallic nanoparticles/nanostructures.…”