Template-free fabrication of Ag nanowire arrays/Al<sub>2</sub>O<sub>3</sub>assembly with flexible collective longitudinal-mode resonance and ultrafast nonlinear optical response

Shuai, Hui; Gao, Junhua; Wu, Xingzhi; Li, Zhongguo; Zou, Yousheng; Song, Yinglin; Cao, Hongtao

doi:10.1088/0022-3727/49/25/25lt02

Cited by 4 publications

(4 citation statements)

References 33 publications

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“…Strong interaction occurs between the two types of TM waves at the ENZ wavelength and forms the ENZ resonance [32]. The strength of the ENZ resonance increases as the incident angle increases owing to its strong anisotropy [33,34]. The absorption peak near ENZ resonance exhibits broadening and blueshift during the recover process, resulting in a wavelength-dependent nonlinear absorption region [35].…”

Section: Methodsmentioning

confidence: 99%

Adjustable ultrafast response in hyperbolic metamaterials through double resonances

Jian¹,

Song²,

Gao³

et al. 2021

J. Phys. D: Appl. Phys.

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Active control of the ultrafast nonlinear optical response in plasmonic nanostructures is essential for the applications of nano-photonics. However, the optical response of noble metal is hindered by the electron dynamics. Here, we demonstrate that the nonlinear absorption properties of silver nanorod arrays could be modulated in the sub-picosecond range by adjusting the incident angle of light. The pump-probe experiment confirmed the response time can be modulated from 2.439 ps to 413 fs by changing the incident angle. Further simulation indicated that the origin of the modulation is the combined effect of the surface plasmon resonance and epsilon-near-zero resonance supported by the samples. Electron temperature shows different effects on the two resonances, leading to the change in the recovery rate of the transmittance during the decrease of the electron temperature. The contributions of the two resonances to nonlinear absorption were presented respectively. The conditions for controlling the relaxation time via multiple resonances were also proposed.

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Section: Methodsmentioning

confidence: 99%

Adjustable ultrafast response in hyperbolic metamaterials through double resonances

Jian¹,

Song²,

Gao³

et al. 2021

J. Phys. D: Appl. Phys.

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“…Nanodot, [ 91,127,128] nanoparticle, [ 129,130] nanowire, [ 93,[131][132][133] nanomesh, [ 92,134] nanohole, [ 135] NT, [94] and 3D nanostructure [ 90,136] 0D 1D 2D 3D…”

Section: Nanosphere Lithographymentioning

confidence: 99%

Metallic Plasmonic Nanostructure Arrays for Enhanced Solar Photocatalysis

Jia

Tsoi

Abed

et al. 2023

Laser & Photonics Reviews

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Plasmon-enhanced photocatalysis has emerged as a promising technology for solar-to-chemical energy conversion. Compared to isolated or disordered metal nanostructures, by controlling the morphology, composition, size, spacing, and dispersion of individual nanocomponents, plasmonic nanostructure arrays with coupling architectures yield strong broadband light-harvesting capability, efficient charge transfer, enhanced local electromagnetic fields, and large contact interfaces. Although metallic nanostructure arrays are extensively studied for various applications, such as refractive index sensing, surface-enhanced spectroscopy, plasmon-enhanced luminescence, plasmon nanolasing, and perfect light absorption, the connection between surface plasmon resonance and enhanced photocatalysis remains relatively unexplored. In this study, an overview of plasmonic nanostructure arrays over a broad range, from 0D to 3D, for efficient photocatalysis is presented. By reviewing the fundamental mechanisms, recent applications, and latest developments of plasmonic nanostructure arrays in solar-driven chemical conversion, this study reports on the latest guidance toward the integration of plasmonic nanostructures for functional devices in the fields of plasmonic, photonics, photodetection, and solar-energy harvesting.

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“…59 The fibers are proposed to grow at their top, where the Ni particle is located, lifting the particle up as they grow. 56 Simultaneous magnetron sputtering of Al 2 O 3 and Ag (Figures 6h and 6i) 60 has produced disordered arrays of Ag nanowires embedded in Al 2 O 3 , vertically oriented with a smooth surface and consistent cross-section. These nanowires are notable for their small diameter (2−3 nm) and pitch (6−8 nm).…”

Section: ■ Solid-metal Nanowire Arraysmentioning

confidence: 99%

Section: Solid-metal Nanowire Arraysmentioning

confidence: 99%

A Review: Methods To Fabricate Vertically Oriented Metal Nanowire Arrays

Nesbitt

Naughton

2017

Ind. Eng. Chem. Res.

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Nanowires can be described as one-dimensional-like structures: elongated solids with two dimensions thinner than about a micrometer. They allow the study of novel physical phenomena and have many technological applications, including capture and storage of energy, thermal transport, and sensing. These applications often use arrays of nanowires on flat surfaces, and sometimes specifically require the nanowires to be vertically oriented rather than randomly oriented, arranged in lithographically ordered arrays rather than randomly distributed, or both. In addition, the nanowires’ height, diameter, cross-sectional shape, and the array pitch often must be controlled. Methods exist to exercise much of this control over insulating and semiconducting nanowires, but less control has been demonstrated for metal nanowire fabrication. Here, we review methods published for the fabrication of metal nanowires, and highlight areas in need of further development. Microwire fabrication is discussed in the context of methods that show promise for adaptation to nanowires.

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Template-free fabrication of Ag nanowire arrays/Al₂O₃assembly with flexible collective longitudinal-mode resonance and ultrafast nonlinear optical response

Cited by 4 publications

References 33 publications

Adjustable ultrafast response in hyperbolic metamaterials through double resonances

Adjustable ultrafast response in hyperbolic metamaterials through double resonances

Metallic Plasmonic Nanostructure Arrays for Enhanced Solar Photocatalysis

A Review: Methods To Fabricate Vertically Oriented Metal Nanowire Arrays

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Template-free fabrication of Ag nanowire arrays/Al2O3assembly with flexible collective longitudinal-mode resonance and ultrafast nonlinear optical response

Cited by 4 publications

References 33 publications

Adjustable ultrafast response in hyperbolic metamaterials through double resonances

Adjustable ultrafast response in hyperbolic metamaterials through double resonances

Metallic Plasmonic Nanostructure Arrays for Enhanced Solar Photocatalysis

A Review: Methods To Fabricate Vertically Oriented Metal Nanowire Arrays

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Template-free fabrication of Ag nanowire arrays/Al₂O₃assembly with flexible collective longitudinal-mode resonance and ultrafast nonlinear optical response