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dc.contributor.authorTimpu, F.
dc.contributor.authorHendricks, N. R.
dc.contributor.authorPetrov, M.
dc.contributor.authorNi, S. B.
dc.contributor.authorRenaut, C.
dc.contributor.authorWolf, H.
dc.contributor.authoret al.
dc.identifier.citationNano Letters, vol. 17 (9), pp. 5381-5388, Sep 2017.
dc.description.abstractWe show enhanced second-harmonic generation (SHG) from a hybrid metal dielectric nanodimer consisting of an inorganic perovskite nano particle of barium titanate (BaTiO3) coupled to a metallic gold (Au) nanoparticle. BaTiO3 Au nanodimers of 100 nm/80 nm sizes are fabricated by sequential capillarity-assisted particle assembly. The BaTiO3 nanoparticle has a noncentrosymmetric crystalline structure and generates bulk SHG. We use the localized surface plasmon resonance of the gold nanoparticle to enhance the SHG from the BaTiO3 nanoparticle. We experimentally measure the nonlinear signal from assembled nanodimers and demonstrate an up to 15-fold enhancement compared to a single BaTiO3 nanoparticle. We further perform numerical simulations of the linear and SHG spectra of the BaTiO3 Au nanodimer and show that the gold nanoparticle acts as a nanoantenna at the SHG wavelength.
dc.subjectHybrid nanodimers, second-harmonic generation (SHG), nanophotonics, perovskite, capillary assembly, dielectric metasurfaces, 3rd-harmonic generation, plasmonic, nanoantennas, harmonic-generation, algaas nanoantennas, optical-properties, field enhancement, nanoparticles, nanocrystals, resonance, Chemistry, Science and Technology - Other Topics, Materials Science, Physics
dc.titleEnhanced Second-Harmonic Generation from Sequential Capillarity-Assisted Particle Assembly of Hybrid Nanodimers
dc.typeJournal Article

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