Investigation of metallic surface layers on metals by surface plasmon ATR spectroscopy

The phenomenon of coupling between light and surface plasmon polaritons requires specific momentum matching conditions. In the case of a single scattering object on a metallic surface, such as a nanoparticle or a nanohole, the coupling between a broadband effect, i.e., scattering, and a discrete one, such as surface plasmon excitation, leads to Fano-like resonance lineshapes. The necessary phase matching requirements can be used to engineer the light–plasmon coupling and to achieve a directional plasmonic excitation. Here, we investigate this effect by using a chiral nanotip to excite surface plasmons with a strong spin-dependent azimuthal variation. This effect can be described by a Fano-like interference with a complex coupling factor that can be modified thanks to a symmetry breaking of the nanostructure.

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Synthesis of metallic surface plasmon-sensitized TiO2 nanowire for wettability application

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-021-06770-0 ◽

2021 ◽

Author(s):

Kamal Kant Kashyap ◽

Monalisa Hazarika ◽

Sardul Singh Dhayal ◽

Paulsamy Chinnamuthu

Keyword(s):

Surface Plasmon ◽

Metallic Surface ◽

Tio2 Nanowire

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Spatially Broadband Coupled-Surface Plasmon Wave Assisted Transmission Effect in Azo-Dye-Doped Liquid Crystal Cell

Nanomaterials ◽

10.3390/nano10071357 ◽

2020 ◽

Vol 10 (7) ◽

pp. 1357

Author(s):

Guan-Ting Dong ◽

Chun-Ta Wang ◽

Yu-Ju Hung

Keyword(s):

Liquid Crystal ◽

Surface Plasmon ◽

Azo Dye ◽

Surface Plasmon Polariton ◽

Mie Scattering ◽

Aluminum Film ◽

Liquid Crystal Cell ◽

Metallic Surface ◽

Crystal Cell ◽

Plasmon Polariton

Active tuning on a plasmonic structure is discussed in this report. We examined the transient transmission effects of an azo-dye-doped liquid crystal cell on a metallic surface grating. The transition between isotropic and nematic phases in liquid crystal generated micro-domains was shown to induce the dynamic scattering of light from a He-Ne laser, thereby allowing transmission through a non-transparent aluminum film overlaying a dielectric grating. Various grating pitches were tested in terms of transmission effects. The patterned gratings include stripe ones and circular forms. Our results indicate that surface plasmon polariton waves are involved in the transmission process. We also demonstrated how momentum diagrams of gratings and Surface Plasmon Polariton (SPP) modes combined with Mie scattering effects could explain the broadband coupling phenomenon. This noteworthy transition process could be applied to the development of spatially broadband surface plasmon polariton coupling devices.

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Reflection losses on a rough metallic surface near the surface plasmon frequency

Nouvelle Revue d Optique ◽

10.1088/0335-7368/7/1/307 ◽

1976 ◽

Vol 7 (1) ◽

pp. 57-62 ◽

Cited By ~ 3

Author(s):

E Le Roux ◽

Mohamed F Mousselly

Keyword(s):

Surface Plasmon ◽

Metallic Surface ◽

Plasmon Frequency

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Micro-Indentation using Strain Rate Sensitivity to Examine Deformation of Polymeric and Metallic Surface Layers

MRS Proceedings ◽

10.1557/proc-436-359 ◽

1996 ◽

Vol 436 ◽

Author(s):

W. R. Newson ◽

B. J. Diak ◽

S. Saimoto

Keyword(s):

Strain Rate ◽

Activation Volume ◽

Rate Sensitivity ◽

Inelastic Strain ◽

Metallic Surface ◽

Linear Low Density Polyethylene ◽

Surface Layers ◽

Strain Rate Change ◽

Unique Measure ◽

Micro Indentation

AbstractA sensitive method to characterize the inelastic deformation of solids is to measure the thermodynamic response of the deforming volume by applying an inelastic strain rate change. Using the step ramp technique on a displacement controlled micro-indentor with Berkovich tip, the apparent activation volumes were determined for linear low density polyethylene, and eutectic Pb-Sn solder for depths less than 10 μm. The results show that the activation volume is a unique measure of a given microstructure.

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Splitting of the Al surface plasmon dispersion curves by Ag surface layers

Journal de Physique ◽

10.1051/jphys:01978003906064500 ◽

1978 ◽

Vol 39 (6) ◽

pp. 645-650 ◽

Cited By ~ 43

Author(s):

T. Lopez-Rios ◽

F. Abelès ◽

G. Vuye

Keyword(s):

Surface Plasmon ◽

Dispersion Curves ◽

Surface Layers ◽

Plasmon Dispersion

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Attenuated Total Reflection for Terahertz Modulation, Sensing, Spectroscopy and Imaging Applications: A Review

Applied Sciences ◽

10.3390/app10144688 ◽

2020 ◽

Vol 10 (14) ◽

pp. 4688 ◽

Cited By ~ 1

Author(s):

Yuxin Huang ◽

Ranjan Singh ◽

Lijuan Xie ◽

Yibin Ying

Keyword(s):

Surface Plasmon ◽

Analytical Methods ◽

Total Reflection ◽

Attenuated Total Reflection ◽

Thz Spectroscopy ◽

Wave Modulation ◽

Thz Wave ◽

Recent Advances ◽

Atr Spectroscopy

Terahertz (THz) technique has become one of the most promising analytical methods and has been applied in many fields. Attenuated total reflection (ATR) technique applied in THz spectroscopy and imaging has been proven to be superior in functionalities such as modulation, sensing, analyzing, and imaging. Here, we first provide a concise introduction to the principle of ATR, discuss the factors that impact the ATR system, and demonstrate recent advances on THz wave modulation and THz surface plasmon sensing based on the THz-ATR system. Then, applications on THz-ATR spectroscopy and imaging are reviewed. Towards the later part, the advantages and limitations of THz-ATR are summarized, and prospects of modulation, surface plasmon sensing, spectroscopy and imaging are discussed.

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