Nonlinear optical properties of metal nanoparticles: a review

Zhang, Yuxi; Wang, Yuhua

doi:10.1039/c7ra07551k

Cited by 310 publications

(124 citation statements)

References 104 publications

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“…[2,3,20,21] High β values in MNPs are desirable for applications such as frequency conversion, switching and optical modulation. [22] Studies on 13-nm gold particles have shown very high β values of 3000 × 10 À 30 esu per atom at an excitation wavelength of 820 nm, similar to that of the best molecular chromophores, which was attributed to effective resonance enhancement near the nanoparticle LSPR. [12] It was first observed by Vance et al [12] that β is highly sensitive to AuNP aggregation induced by increasing NaCl concentration and that HRS is at least an order of magnitude more sensitive at picking up aggregation in comparison to Rayleigh scattering (RS), showing that HRS is useful for biosensing assays.…”

Section: Introductionmentioning

confidence: 96%

“…However, spherical MNPs exhibit frequency doubling in solution, which is attributed to local imperfections and field enhancements at the particle surface as well as retardation effects . High β values in MNPs are desirable for applications such as frequency conversion, switching and optical modulation . Studies on 13‐nm gold particles have shown very high β values of 3000×10 −30 esu per atom at an excitation wavelength of 820 nm, similar to that of the best molecular chromophores, which was attributed to effective resonance enhancement near the nanoparticle LSPR …”

Section: Introductionmentioning

confidence: 99%

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Enhancement of Nonlinear Optical Scattering by Gold Nanoparticles through Aggregation‐Induced Plasmon Coupling in the Near‐Infrared

et al. 2019

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Gold nanoparticles (AuNPs) are regarded as promising building blocks in functional nanomaterials for sensing, drug delivery and catalysis. One remarkable property of these particles is the localized surface plasmon resonance (LSPR), which gives rise to augmented optical properties through local field enhancement. LSPR also influences the nonlinear optical properties of metal NPs (MNPs) making them potentially interesting candidates for fast, high resolution nonlinear optical imaging. In this work we characterize and discuss the wavelength dependence of the hyper‐Rayleigh scattering (HRS) behavior of spherical gold nanoparticles (GNP) and gold nanorods (GNR) in solution, from 850 nm up to 1300 nm, covering the near‐infrared (NIR) window relevant for deep tissue imaging. The high‐resolution spectral data allows discriminating between HRS and two photon photoluminescence contributions. Upon particle aggregation, we measured very large enhancements (ca. 104) of the HRS intensity in the NIR, which is explained by considering aggregation‐induced plasmon coupling effects and local field enhancement. These results indicate that purposely designed coupled nanostructures could prove advantageous for nonlinear optical imaging and biosensing applications.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Enhancement of Nonlinear Optical Scattering by Gold Nanoparticles through Aggregation‐Induced Plasmon Coupling in the Near‐Infrared

et al. 2019

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“…High surface‐to‐volume ratio coupled with ease of surface functionalization leads to nanostructured metallic particles exhibiting interesting pharmacological, optoelectronic, tuneable surface plasmon properties and catalytic effects . Metal nanoparticles have attracted much attention in recent times for applications related to chemical sensing, medicine, drug delivery, bioimaging, theranostics , water treatment, antimicrobial, food‐packaging, nonlinear optical devices, catalysis, etc. Such application potential of nanomaterials has spurred interest in novel methods for accessing nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Alga‐mediated facile green synthesis of silver nanoparticles: Photophysical, catalytic and antibacterial activity

Borah

Das

et al. 2020

Applied Organom Chemis

108

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A facile, convenient and green method has been employed for the synthesis of silver nanoparticles (AgNPs) using dried biomass of a green alga, Chlorella ellipsoidea. The phytochemicals from the alga, as a mild and non‐toxic source, are believed to serve as both reducing and stabilizing agents. The formation of silver nanoparticles was confirmed from the appearance of a surface plasmon resonance band at 436 nm and energy dispersive X‐ray spectroscopy. The transmission electron microscopy images showed the nanoparticles to be nearly spherical in shape with different sizes. A dynamic light scattering study revealed the average particle size to be 220.8 ± 31.3 nm. Fourier transform infrared spectroscopy revealed the occurrence of alga‐derived phytochemicals attached to the outer surface of biogenically accessed silver nanoparticles. The powder X‐ray diffraction study revealed the face‐centred cubic crystalline structure of the nanoparticles. The as‐synthesized biomatrix‐loaded AgNPs exhibited a high photocatalytic activity for the degradation of the hazardous pollutant dyes methylene blue and methyl orange. The catalytic efficiency was sustained even after three reduction cycles. A kinetic study indicated the degradation rates to be pseudo‐first order with the degradation rate being 4.72 × 10−2 min−1 for methylene blue and 3.24 × 10−2 min−1 for methyl orange. The AgNPs also exhibited significant antibacterial activity against four selected pathogenic bacterial strains.

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“…Nonlinear optics in metal nanoparticles within transparent dielectric media has been studied extensively [1][2][3][4][5][6][7][8][9][10][11][12]. In particular, third order optics using ultrashort (femtosecond) laser pulses in such metal nanoparticle systems have been widely studied and reported.…”

Section: Introductionmentioning

confidence: 99%

Quadratic Electro-Optic Effect in Metal Nanoparticles in a Transparent Dielectric Medium

Thakur¹,

Cleave²

2019

Applied Sciences

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The quadratic electro-optic effect/Kerr coefficients were measured for the first time for metal nanoparticles. In particular, gold nanoparticles in glass were studied. Measurements were made using the field-induced birefringence method at a wavelength near the onset of the surface plasmon resonance. The magnitudes of the Kerr coefficients for different sizes of gold nanoparticles in glass were measured and compared with that of subnanometer size metallic particles in non-conjugated conductive polymers. The magnitude of the Kerr coefficient was found to increase rapidly (about d−3) when the diameter, d, of the nanoparticles was decreased. This is consistent with the existing theories and understanding of nonlinear optics in metal nanoparticles. The results imply a broad range of new applications of metal nanoparticles in electro-optic switching/modulation, low-cost Kerr cells and other uses in optoelectronics.

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Nonlinear optical properties of metal nanoparticles: a review

Cited by 310 publications

References 104 publications

Enhancement of Nonlinear Optical Scattering by Gold Nanoparticles through Aggregation‐Induced Plasmon Coupling in the Near‐Infrared

Enhancement of Nonlinear Optical Scattering by Gold Nanoparticles through Aggregation‐Induced Plasmon Coupling in the Near‐Infrared

Alga‐mediated facile green synthesis of silver nanoparticles: Photophysical, catalytic and antibacterial activity

Quadratic Electro-Optic Effect in Metal Nanoparticles in a Transparent Dielectric Medium

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