Near field properties of nanoparticle arrays fabricated by laser annealing of thin Au and Ag films

Optical properties of Au nanostructures obtained by pulsed UV laser irradiation of thin films

“…1-2. A nearly homogeneous distribution of spherical particles is characteristic for all investigated structures, and this is consistent with our previous work [3,4]. Depending on the pulse number applied, the particle number per unit area decreases with prolonged irradiation at fixed laser fluence of 412mJ/cm 2 , see Figs.…”

Noble metallic nanostructures: preparation, properties, applications

“…A method is developed for production of Au and Ag nanostructures which consists of two steps: 1 st one -PLD of a thin (50÷100 nm) metal film and 2 nd -laser annealing with ns pulses [15]. At certain conditions, the annealing leads to a homogeneous decomposition of the film into NPs with diameters in the range of few tens of nanometers -figure 3.…”

Self-assembled plasmonic templates produced by microwave annealing: applications to surface-enhanced Raman scattering

“…Among these applications, surface-enhanced Raman scattering (SERS) and surfaceenhanced resonant Raman scattering (SERRS) were extensively studied [7][8][9][10][11][12][13] because of both the fundamental science lying behind them, as well as due to the tremendous social impact of their application to early medical diagnosis, as well as to toxicology and forensics [14][15][16]. Plasmonic templates, consisting of nanoparticles supported on a substrate, are nowadays produced by a wide range of growth techniques spanning from chemical synthesis in colloidal solutions [17][18][19][20], to templated synthesis on rigid substrates by nanosphere lithography [21,22], electron-beam lithography [23,24], block copolymer nanolithography [25] and laser annealing of Ag thin films [26,27]. However, there is still a need for new fabrication routes that would be facile, fast, costeffective, accurate and highly reproducible, and that would require a lesser degree of sophistication compared to lithographic techniques and laser annealing, and would produce nanoparticles that are firmly attached to the substrate (which acts as the test plate for diagnosis and forensics when SERS/SERRS is implemented), in contrast to the colloidal solutions.…”

“…This study is supported by a wide variety of analytical techniques such as Atomic Force Microscopy (AFM), XRay Photoelectron Spectroscopy (XPS), X-Ray Reflectivity (XRR), X-Ray Diffraction (XRD), Optical Reflectance Spectroscopy (ORS) and Raman spectroscopy. Finally the suitability of the produced plasmonic templates as SERRS test plates was evaluated by performing detailed SERRS measurements of aqueous solutions of Rhodamine 6G (R6G), which is a standard test molecule for SERS/SERRS [26,27,[33][34][35].…”