scholarly journals Effect of Multimodal Plasmon Resonances on the Optical Properties of Five-Pointed Nanostars

10.5772/60726 ◽  
2015 ◽  
Vol 5 ◽  
pp. 22 ◽  
Author(s):  
Shaoli Zhu ◽  
Michael Cortie ◽  
Idriss Blakey
Keyword(s):  
Optical Properties ◽  
Plasmon Resonances

Surface Plasmon Resonances, Optical Properties, and Electrical Conductivity Thermal Hystersis of Silver Nanofibers Produced by the Electrospinning Technique

Langmuir ◽  
2008 ◽  
Vol 24 (20) ◽  
pp. 11982-11987 ◽  
Author(s):  
Nasser A. M. Barakat ◽  
Kee-Do Woo ◽  
Muzafar A. Kanjwal ◽  
Kyung Eun Choi ◽  
Myung Seob Khil ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Optical Properties ◽  
Surface Plasmon ◽  
Surface Plasmon Resonances ◽  
Electrospinning Technique ◽  
Plasmon Resonances

scholarly journals Unconventional Optical Response in Engineered Au-Ag Nanostructures

2019 ◽  
Author(s):  
Dev Kumar Thapa ◽  
Subham Kumar Saha ◽  
Guru Pratheep Rajasekar ◽  
Biswajit Bhattacharyya ◽  
Rekha Mahadevu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Surface Plasmon ◽  
Mie Theory ◽  
Localized Surface Plasmon ◽  
Silver Particles ◽  
Temperature Dependent ◽  
Surface Plasmon Resonances ◽  
Localized Surface Plasmon Resonances ◽  
Plasmon Resonances ◽  
Diamagnetic State

This article describes the optical properties of nanostructures composed of silver particles embedded into a gold matrix. In previous studies these materials were shown to exhibit temperature dependent transitions to a highly conductive and strongly diamagnetic state. Here we describe the anomalous optical properties of these nanostructures. Most notably, these materials fail to obey Mie theory and exhibit an unconventional resonance with a maximum at about 4 eV, while the usual gold and silver localized surface plasmon resonances are suppressed. This effect implies a significant deviation from the bulk dielectric functions of gold and silver. We further resolved this resonance into its absorbance and scattering sub-parts. It is observed that the resonance is largely comprised of scattering, with negligible losses even at ultraviolet frequencies.

Shedding Light on Vacancy-Doped Copper Chalcogenides: Shape-Controlled Synthesis, Optical Properties, and Modeling of Copper Telluride Nanocrystals with Near-Infrared Plasmon Resonances

ACS Nano ◽  
2013 ◽  
Vol 7 (5) ◽  
pp. 4367-4377 ◽  
Author(s):  
Ilka Kriegel ◽  
Jessica Rodríguez-Fernández ◽  
Andreas Wisnet ◽  
Hui Zhang ◽  
Christian Waurisch ◽  
...  
Keyword(s):  
Optical Properties ◽  
Near Infrared ◽  
Controlled Synthesis ◽  
Copper Telluride ◽  
Copper Chalcogenides ◽  
Plasmon Resonances ◽  
Shape Controlled

scholarly journals Unconventional Optical Response in Engineered Au-Ag Nanostructures

2019 ◽  
Author(s):  
Dev Kumar Thapa ◽  
Subham Kumar Saha ◽  
Guru Pratheep Rajasekar ◽  
Biswajit Bhattacharyya ◽  
Rekha Mahadevu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Surface Plasmon ◽  
Mie Theory ◽  
Localized Surface Plasmon ◽  
Silver Particles ◽  
Temperature Dependent ◽  
Surface Plasmon Resonances ◽  
Localized Surface Plasmon Resonances ◽  
Plasmon Resonances ◽  
Diamagnetic State

This article describes the optical properties of nanostructures composed of silver particles embedded into a gold matrix. In previous studies these materials were shown to exhibit temperature dependent transitions to a highly conductive and strongly diamagnetic state. Here we describe the anomalous optical properties of these nanostructures. Most notably, these materials fail to obey Mie theory and exhibit an unconventional resonance with a maximum at about 4 eV, while the usual gold and silver localized surface plasmon resonances are suppressed. This effect implies a significant deviation from the bulk dielectric functions of gold and silver. We further resolved this resonance into its absorbance and scattering sub-parts. It is observed that the resonance is largely comprised of scattering, with negligible losses even at ultraviolet frequencies.

METAL-DIELECTRIC COMPOSITE FILTERS WITH CONTROLLED SPECTRAL WINDOWS OF TRANSPARENCY

2003 ◽  
Vol 12 (04) ◽  
pp. 419-440 ◽  
Author(s):  
DENTCHO A. GENOV ◽  
ANDREY K. SARYCHEV ◽  
VLADIMIR M. SHALAEV
Keyword(s):  
Optical Properties ◽  
Metal Clusters ◽  
Mid Infrared ◽  
Aspect Ratios ◽  
Spectrally Selective ◽  
Plasmon Resonances ◽  
Low Pass ◽  
Spectral Ranges ◽  
Low Pass Filters ◽  
Plasmon Modes

In this report we show the possibility of broadband low-pass filters with windows of transparency in pre-set spectral ranges. Those filters are based on the unique optical properties of metal-dielectric composites near the percolation threshold. In such composites, metal clusters of different sizes and shapes have different plasmon resonances and resonate nearly independently at different wavelengths. All together, the resonant plasmon modes cover a very broad spectral range. Applying the effect of spectrally selective photo-modification, we develop a procedure that creates mid-infrared windows of transparency within the broadband filters. We also investigate the possibilities of making low-pass filters composed of spheroids and conductive sticks with certain distributions of aspect ratios.

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