scholarly journals Energy absorption of laser radiation by metal nanoparticles in the conditions of surface plasmon resonance

Surface ◽  
2019 ◽  
Vol 11(26) ◽  
pp. 496-507
Author(s):  
O. Yu. Semchuk ◽  
O. O. Havryliuk ◽  
A. A. Biliuk
Keyword(s):  
Surface Plasmon Resonance ◽  
Laser Radiation ◽  
Metal Nanoparticles ◽  
Energy Absorption ◽  
Surface Plasmon ◽  
Plasmon Resonance

scholarly journals Kinetic theory of surface plasmon resonance in metal nanoparticles

Surface ◽  
2020 ◽  
Vol 12(27) ◽  
pp. 3-19
Author(s):  
O. Yu. Semchuk ◽  
◽  
O. O. Havryliuk ◽  
A. A. Biliuk ◽  
◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Surface Plasmon Resonance ◽  
Laser Radiation ◽  
Kinetic Equation ◽  
Metal Nanoparticles ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Conductivity Tensor ◽  
Metal Nanoparticle ◽  
Conduction Electrons

In recent years, interest in studying the optical properties of metallic nanostructures has grown. This interest is primarily related to the possibility of practical application of such nanostructures in quantum optical computers, micro- and nanosensors. These applications are based on the fundamental optical effect of surface plasmon excitation. The consequence of this phenomenon is surface plasmon resonance (SPR) - an increase in the cross section of energy absorption by a metal nanoparticle as the frequency of incident light (laser radiation) approaches the SPR frequency of the nanoparticle. Plasmon structures are used to improve the efficiency of thin-film SC. In such structures, metal nanoparticles can primarily act as additional scattering elements for the long-wavelength component of sunlight illuminating SC. As a collective phenomenon, SPR can be described using kinetic approaches, ie using the Boltzmann kinetic equation for the conduction electrons of metal nanoparticles. In this work, the theory of SPR based on the kinetic equation for the conduction electrons of nanoparticles is constructed. to the well-known results derived from the Drude-Sommerfeld theory. Second, the kinetic method makes it possible to study metal nanoparticles with sizes larger or ptical conductivity tensor for spheroidal metal nanoparticles. It is shown that the effect of nanoparticle asymmetry on the ratio of the components of the optical conductivity tensor differs not only smaller than the average electron free path length. The developed theory is used to calculate the oquantitatively but also qualitatively in high-frequency and low-frequency surface scattering. It was found that in metal nanoparticles in a dielectric matrix, under SPR conditions, the full width of the SPR line in a spherical metal nanoparticle depends on both the radius of the particle and the frequency of the electromagnetic (laser) radiation exciting this SPR. It is shown that oscillations of the SPR line width with a change in the dielectric constant of the medium in which they are located can be observed in metal nanoparticles. The magnitude of these oscillations is greater the smaller the size of the nanoparticle and increases significantly with increase. As the radius of the spherical nanoparticle increases, the width of the SPR line decreases significantly and prevails around a certain constant value in media with a higher value of dielectric constant.

Interpretation of spectra responses of metal nanoparticles to analyte based on localized surface plasmon resonance

2011 ◽  
Vol 225 (4) ◽  
pp. 171-175
Author(s):  
Wenying Ma ◽  
Fangrong Hu ◽  
Huan Yang ◽  
Weimin Wang
Keyword(s):  
Surface Plasmon Resonance ◽  
Metal Nanoparticles ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Localized Surface Plasmon ◽  
Structure Model ◽  
Biochemical Sensors ◽  
Sensing Applications ◽  
Receptor Layer

Metal nanoparticles have potential utilities in biochemical sensing applications owing to their localized surface plasmon resonance characteristics. To facilitate the application of localized surface plasmon resonance sensors, a simple and effective interpretation of spectra responses of metal nanoparticles to analyte was developed in this paper. Based on a bilayer structure model and a trilayer structure model, a general relationship between the peak wavelength changes of extinction spectra and the thickness of the receptor layer as well as the analyte layer was established. Both analytical analysis and chloroform vapor test experiment demonstrate that the sensing performance is greatly dependent on the receptor thickness, and a thinner receptor layer will induce a greater sensitivity. These insights can be used as guidelines in fabricating highly sensitive localized surface plasmon resonance-based biochemical sensors.

The effect of graphene on surface plasmon resonance of metal nanoparticles

2018 ◽  
Vol 20 (38) ◽  
pp. 25078-25084 ◽  
Author(s):  
Haiyan Nan ◽  
Zhirong Chen ◽  
Jie Jiang ◽  
JiaQi Li ◽  
Weiwei Zhao ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Metal Nanoparticles ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Metal Nanoparticle ◽  
Localized Surface Plasmon ◽  
Au Nps ◽  
Hybrid Schemes ◽  
Graphene Layers

Two transparent graphene–metal nanoparticle (NP) hybrid schemes, namely Au NPs covered by graphene layers and Au NPs encapsulated by graphene layers, are presented and the effect of graphene on the localized surface plasmon resonance of metal NPs is systematically investigated.

Enhanced Catalytic Activity of Magnetic Bimetallic Ag–Au Nanoparticles Mediated by Surface Plasmon Resonance

2021 ◽  
Vol 21 (5) ◽  
pp. 3107-3114
Author(s):  
Zhuo-Rui Li ◽  
Geng Zhu ◽  
Guo-Zhi Han
Keyword(s):  
Catalytic Activity ◽  
Surface Plasmon Resonance ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Au Nanoparticles ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Noble Metal Nanoparticles

We firstly discover the enhanced catalytic activity of magnetic noble metal nanoparticles mediated by surface plasmon resonance. Under light irradiation with certain wavelength, the catalytic performance of magnetic noble metal nanoparticles shows changes with different degrees and directions that are associated with the surface plasmon resonance (SPR) of the noble metal. Moreover, the coupling of silver and gold allows the catalytic performance of magnetic bimetallic Ag–Au nanoparticles to show more positive response to surface plasmon resonance. The magnetic bimetallic Ag–Au nanoparticles show excellent catalytic performance toward the reduction reaction of aromatic nitro group, and corresponding rate constant of the catalytic reduction reaction increases about three times with light irradiation.

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