The Study of Tunable Local Surface Plasmon Resonances on Au-Ag and Ag-Au Core-Shell Alloy Nanostructure Particles With DDA Method

Ma, Youqiao; Zhang, Lihua; Wu, Zhao-Wang; Yi, Mingfang; Zhou, Jie; Jian, Guoshu

doi:10.1007/s11468-015-9997-z

Cited by 24 publications

(21 citation statements)

References 24 publications

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“…Moreover, the temperature should not exceed 45 ° C; therefore, the MHT method was investigated. The motivation to concentrate on this compound is that pure gold nanoparticles have low thermal stability, and non-coated gold nanoparticles would have some limitations such as functionalization [15,18]. Silver, also, is not stable despite its high dispersion e ciency [16,20,21].…”

Section: Discussionmentioning

confidence: 99%

“…{\sigma }_{t}\frac{\partial {T}_{t}(R,t)}{\partial r}={\sigma }_{st}\frac{\partial {T}_{st}({r}_{t},t)} {\partial r} (14) {T}_{t}(0,t)= nite (15) {T}_{t}(r,0)={T}_{st}(r,0)={T}_{0} (16)…”

Section: Bioheatmentioning

confidence: 99%

“…The favorable nanoparticles should have high coe cients of extinction and adsorption in the range of biological windows (680-1400 nm) in the target tissue [12][13][14]. Moreover, the delivery of heat to the target tissue would also be affected by various factors such as size, geometry, environment and structure of nanoparticles [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…Through modifying the nanostructure composition, the surface plasmon resonance (SPR) and the extinction coe cient can be adjusted within the desired window. Gold is biologically compatible as it is a noble metal, which is thermally and chemically stable [15,18,19]. Despite these good properties of gold for heat treatment, pure gold would result in a poor extinction rate.…”

Section: Introductionmentioning

confidence: 99%

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Liver cancer treatment using magneto plasmonic method by Fe3O4/Au-Ag@MoS2 nanoparticles

Seyedjamali

Farahzadi

Arabi³

2022

Preprint

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This study investigates the treatment of liver cancer by the magnetic hyperthermia approach and nanoparticles including \({Fe}_{3}{O}_{4}\) core with gold, silver alloy shell, and \({MoS}_{2}\) coating. Optical properties of these nanoparticles within the tumor, including the extinction coefficient and surface plasmon peak (SPR) as a function of size, structure, different compositions, and thickness are also investigated using the effective medium theory. Moreover, the impact of temperature distribution was assessed through the analytical modeling of alternating current (AC) magnetic field. The results of this study demonstrated that nanoparticles with a compound of \(F{e}_{3}{O}_{4}-{Au}_{0.25}{Ag}_{0.75}@{MoS}_{2},\) a 3 nm thick cover of gold-silver alloy, and 3 layers of \({MoS}_{2}\) have the best coefficient of extinction and SPR in the biological window. The gold-silver alloy improved the extinction coefficient and, at the same time, prevented the accumulation of magnetic nanoparticles. Since the gold-silver alloy alone cannot function within the range of biological windows, \({MoS}_{2}\) was used, which increased the extinction efficiency at higher wavelengths. Examination of the temperature distribution in the tumor for the proposed alloy compound indicated that after a short time from the start of irradiation, the tumor temperature reaches 45 ° C. Also, the temperature distribution within the tumor tissue reached its maximum value at the center of the tumor and decreased dramatically as getting away from the center. The use of magnetic hyperthermia enabled localized delivery of therapeutic dose to malignant tumors; hence, exhibiting superior performance/efficiency over the photothermal method.

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Section: Discussionmentioning

confidence: 99%

“…{\sigma }_{t}\frac{\partial {T}_{t}(R,t)}{\partial r}={\sigma }_{st}\frac{\partial {T}_{st}({r}_{t},t)} {\partial r} (14) {T}_{t}(0,t)= nite (15) {T}_{t}(r,0)={T}_{st}(r,0)={T}_{0} (16)…”

Section: Bioheatmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Liver cancer treatment using magneto plasmonic method by Fe3O4/Au-Ag@MoS2 nanoparticles

Seyedjamali

Farahzadi

Arabi³

2022

Preprint

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“…Additionally, the free electron concentration has a significant impact on the LSPR frequency and determines the range of the resonance frequency, as shown inFigure 2.10. Due to the high free electron concentration in the range of 10 22 -10 23 cm -3 , the LSPR frequencies of the Au-NP and Ag-NP are in the visible range[77,88,89].…”

mentioning

confidence: 99%

Optical properties of titanium oxynitride thin films and application in selective solar absorber

Zhang¹

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The selective solar absorber (SSA) is one of the key units in the concentrated solar power (CSP) system, which is promising for generating renewable and clean energy with solar energy. The titanium oxynitride (TiNxOy) thin film based SSA has drawn a lot of attention due to many advantages, such as environmental friendliness, low cost, and excellent optical property. In this thesis, the optical properties of TiNxOy thin films have been investigated and the SSA based on TiNxOy thin film has been designed and modeled.

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Plasmonic Hydrogen Sensors

Sun

Zhao

2022

Small

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Hydrogen is regarded as the ultimate fuel and energy carrier with a high theoretical energy density and universality of sourcing. However, hydrogen is easy to leak and has a wide flammability range in air. For safely handling hydrogen, robust sensors are in high demand. Plasmonic hydrogen sensors (PHS) are attracting growing interest due to the advantages of high sensitivity, fast response speed, miniaturization, and high‐degree of integration, etc. In this review, the mechanism and recent development (mainly after the year 2015) of hydrogen sensors based on plasmonic nanostructures are presented. The working principle of PHS is introduced. The sensing properties and the effects of resonance mode, configuration, material, and structure of the plasmonic nanostructures on the sensing performances are discussed. The merit and demerit of different types of plasmonic nanostructures are summarized and potential development directions are proposed. The aim of this review is not only to clarify the current strategies for PHS, but also to give a comprehensive understanding of the working principle of PHS, which may inspire more ingenious designs and execution of plasmonics for advanced hydrogen sensors.

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The Study of Tunable Local Surface Plasmon Resonances on Au-Ag and Ag-Au Core-Shell Alloy Nanostructure Particles With DDA Method

Cited by 24 publications

References 24 publications

Liver cancer treatment using magneto plasmonic method by Fe3O4/Au-Ag@MoS2 nanoparticles

Liver cancer treatment using magneto plasmonic method by Fe3O4/Au-Ag@MoS2 nanoparticles

Optical properties of titanium oxynitride thin films and application in selective solar absorber

Plasmonic Hydrogen Sensors

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