Quantitative absorption spectroscopy of nano-objects

Berto, Pascal; Bermúdez‐Ureña, Esteban; Bon, Pierre; Quidant, Romain; Rigneault, Hervé; Baffou, Guillaume

doi:10.1103/physrevb.86.165417

Cited by 29 publications

(27 citation statements)

References 14 publications

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“…Determining those effective temperatures with precision and accuracy is usually difficult, [21][22][23][24][25][26] particularly for discrete plasmonically-active nanoparticles. 27 Thermal microscopy techniques have been demonstrated to probe temperature changes of small volumes including a thermographic phosphor technique, 28 scanning thermal microscopy, 29 and other methods. [30][31][32] This work combines electronic measurements with precise illumination to detect temperature changes isolated to the nanoscale volume of a single nanowire.…”

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confidence: 99%

Thermoplasmonics: Quantifying Plasmonic Heating in Single Nanowires

Knight²,

2014

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Plasmonic absorption of light can lead to significant local heating in metallic nanostructures, an effect that defines the sub-field of thermoplasmonics and has been leveraged in diverse applications from biomedical technology to optoelectronics. Quantitatively characterizing the resulting local temperature increase can be very challenging in isolated nanostructures. By measuring the optically-induced change in resistance of metal nanowires with a transverse plasmon mode, we quantitatively determine the temperature increase in single nanostructures, with the dependence on incident polarization clearly revealing the plasmonic heating mechanism.Computational modeling explains the resonant and nonresonant contributions to the optical heating and the dominant pathways for thermal transport. These

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Thermoplasmonics: Quantifying Plasmonic Heating in Single Nanowires

Knight²,

2014

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“…Interestingly, integration of the experimental maps of p(x,y) over x and y allows quantitative measurement of the total power absorbed (or equivalently delivered) by the composite nanoparticle 32 TIQSI therefore provides a powerful non-invasive technique to recover the local steady state temperature increase, the heat source density, and the absorption cross sections of nanoscale particles with arbitrary geometry, like the complex nanowire system investigated herein. Initially we investigated heating in single isolated Au, Ag and Ni nanowires.…”

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Quantitative Study of the Photothermal Properties of Metallic Nanowire Networks

Bell¹,

Fairfield²,

McCarthy³

et al. 2015

ACS Nano

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In this article, we present a comprehensive investigation of the photothermal properties of plasmonic nanowire networks. We measure the local steady-state temperature increase, heat source density, and absorption in Ag, Au, and Ni metallic nanowire networks under optical illumination. This allows direct experimental confirmation of increased heat generation at the junction between two metallic nanowires and stacking-dependent absorption of polarized light. Due to thermal collective effects, the local temperature distribution in a network is shown to be completely delocalized on a micrometer scale, despite the nanoscale features in the heat source density. Comparison of the experimental temperature profile with numerical simulation allows an upper limit for the effective thermal conductivity of a Ag nanowire network to be established at 43 Wm(-1) K(-1) (0.1 κbulk).

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“…In practice, quantifying only extinction is not enough to fully characterize the optical properties of NPs. Other experimental procedures have been designed to retrieve scattering (σ sca ) or absorption (σ abs ) cross sections as well [25,26], although these quantities are more difficult to access and to be quantitatively measured. The Link's group reported in 2010 quantitative measurements of both absorption and scattering cross sections of single NPs using two separate techniques, namely dark-field spectroscopy and another SM technique called photothermal imaging [27].…”

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Full optical characterization of single nanoparticles using quantitative phase imaging

Khadir¹,

Andrén²,

Chaumet³

et al. 2020

Optica

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This paper introduces a procedure aimed to quantitatively measure the optical properties of nanoparticles, namely the complex polarizability and the extinction, scattering, and absorption cross sections, simultaneously. The method is based on the processing of intensity and wavefront images of a light beam illuminating the nanoparticle of interest. Intensity and wavefront measurements are carried out using quadriwave lateral shearing interferometry, a quantitative phase imaging technique with high spatial resolution and sensitivity. The method does not require any preknowledge on the particle and involves a single interferogram image acquisition. The full determination of the actual optical properties of nanoparticles is of particular interest in plasmonics and nanophotonics for the active search and characterization of new materials, e.g., aimed to replace noble metals in future applications of nanoplasmonics with less-lossy or refractory materials.

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Quantitative absorption spectroscopy of nano-objects

Cited by 29 publications

References 14 publications

Thermoplasmonics: Quantifying Plasmonic Heating in Single Nanowires

Thermoplasmonics: Quantifying Plasmonic Heating in Single Nanowires

Quantitative Study of the Photothermal Properties of Metallic Nanowire Networks

Full optical characterization of single nanoparticles using quantitative phase imaging

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