Enhanced Second-Harmonic Generation from Sequential Capillarity-Assisted Particle Assembly of Hybrid Nanodimers

Flavia Timpu; Nicholas R. Hendricks; Mihail Petrov; Songbo Ni; Claude Renaut; Heiko Wolf; Lucio Isa; Yuri Kivshar; Rachel Grange

doi:10.1021/acs.nanolett.7b01940

Enhanced Second-Harmonic Generation from Sequential Capillarity-Assisted Particle Assembly of Hybrid Nanodimers

Flavia Timpu^*, Nicholas R. Hendricks, Mihail Petrov, Songbo Ni, Claude Renaut, Heiko Wolf, Lucio Isa, Yuri Kivshar, Rachel Grange

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

74 Citations (Scopus)

Abstract

We show enhanced second-harmonic generation (SHG) from a hybrid metal-dielectric nanodimer consisting of an inorganic perovskite nanoparticle 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.

Original language	English
Pages (from-to)	5381-5388
Number of pages	8
Journal	Nano Letters
Volume	17
Issue number	9
DOIs	https://doi.org/10.1021/acs.nanolett.7b01940
Publication status	Published - 13 Sept 2017

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title = "Enhanced Second-Harmonic Generation from Sequential Capillarity-Assisted Particle Assembly of Hybrid Nanodimers",

abstract = "We show enhanced second-harmonic generation (SHG) from a hybrid metal-dielectric nanodimer consisting of an inorganic perovskite nanoparticle 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.",

keywords = "Hybrid nanodimers, capillary assembly, nanophotonics, perovskite, second-harmonic generation (SHG)",

author = "Flavia Timpu and Hendricks, {Nicholas R.} and Mihail Petrov and Songbo Ni and Claude Renaut and Heiko Wolf and Lucio Isa and Yuri Kivshar and Rachel Grange",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

month = sep,

day = "13",

doi = "10.1021/acs.nanolett.7b01940",

language = "English",

volume = "17",

pages = "5381--5388",

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T1 - Enhanced Second-Harmonic Generation from Sequential Capillarity-Assisted Particle Assembly of Hybrid Nanodimers

AU - Timpu, Flavia

AU - Hendricks, Nicholas R.

AU - Petrov, Mihail

AU - Ni, Songbo

AU - Renaut, Claude

AU - Wolf, Heiko

AU - Isa, Lucio

AU - Kivshar, Yuri

AU - Grange, Rachel

PY - 2017/9/13

Y1 - 2017/9/13

N2 - We show enhanced second-harmonic generation (SHG) from a hybrid metal-dielectric nanodimer consisting of an inorganic perovskite nanoparticle 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.

AB - We show enhanced second-harmonic generation (SHG) from a hybrid metal-dielectric nanodimer consisting of an inorganic perovskite nanoparticle 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.

KW - Hybrid nanodimers

KW - capillary assembly

KW - nanophotonics

KW - perovskite

KW - second-harmonic generation (SHG)

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U2 - 10.1021/acs.nanolett.7b01940

DO - 10.1021/acs.nanolett.7b01940

M3 - Article

SN - 1530-6984

VL - 17

SP - 5381

EP - 5388

JO - Nano Letters

JF - Nano Letters

IS - 9

ER -

Enhanced Second-Harmonic Generation from Sequential Capillarity-Assisted Particle Assembly of Hybrid Nanodimers

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