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Silver and gold nanoparticles in nanometric confined templates: Synthesis and alloying within the anisotropic pores of oblique angle deposited films

AutorParra-Barranco, J. ; Sánchez-Valencia, J.R. ; Barranco, Ángel ; González-Elipe, Agustín R.
Palabras claveLaser annealing
Porous thin films
Oblique and Glancing Angle Deposition (OAD and GLAD)
Anisotropic metal nanoparticles
Nanotemplates,Surface Plasmon Resonance
Fecha de publicación2017
EditorInstitute of Physics Publishing
CitaciónNanotechnology 28: 48 (2017)
ResumenIn this work we have developed an infiltration methodology to incorporate metal nanoparticles (NPs) of controlled size and shape into the open voids available in oblique angle deposited thin films. These NPs exhibited well-defined surface plasmon resonances (SPRs). The nanometric confined space provided by their porous microstructure has been used as a template for the growth of anisotropic NPs with interesting SPR properties. The fabrication methodology has been applied for the preparation of films with embedded Ag and Au NPs with two associated plasmon resonance features that developed a dichroic behaviour when examined with linearly polarized light. A confined alloying process was induced by near IR nanosecond laser irradiation yielding bimetallic NPs with SPR features covering a large zone of the electromagnetic spectrum. The possibilities of the method for the tailored fabrication of a wide range colour palette based on SPR features are highlighted.
Identificadoresdoi: 10.1088/1361-6528/aa92af
issn: 1361-6528
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