Absorption characteristics of a metal-insulator-metal nanodisk for solar thermal applications

Qin, Caiyan; Guo, Yanming; Seo, Jae M.; Lee, Jungchul; Lee, Bong Jae

doi:10.1364/oe.393351

Cited by 36 publications

(10 citation statements)

References 52 publications

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“…Moreover, the heat power density is calculated by [ 45 ]

where ε 0 is the vacuum permittivity, ω is the frequency of the incident light, ε ’’ is the imaginary part of material permittivity, and E is the electric field of the medium. Since the distribution of nanoparticles in the working base fluid is random, the incidence and polarization direction of the electromagnetic wave are changed here to calculate the average of the three components (i.e., x -incidence with z -polarization, x -incidence with y -polarization and z -incidence with x -polarization) [ 37 ].…”

Section: Modelingmentioning

confidence: 99%

“…There are many ways to predict and understand the optical response of nanoparticles [ 36 ]. In this work, the absorption and scattering efficiencies of particles are calculated by the finite element method (FEM) [ 37 ], and the resonance mode is analyzed by the obtained electromagnetic field under resonance conditions. Compared with ordinary spherical nanoparticles, plasmonic dimer nanoparticles are excited with more absorption peaks, which can broaden solar energy absorption.…”

Section: Introductionmentioning

confidence: 99%

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Optical Properties of Plasma Dimer Nanoparticles for Solar Energy Absorption

Sun

Qin

Zhai³

et al. 2021

Nanomaterials

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Plasmonic nanofluids have excellent optical properties in solar energy absorption and have been widely studied in solar thermal conversion technology. The absorption of the visible region of solar energy by ordinary metal nanoparticles is usually limited to a narrow resonance band, so it is necessary to enhance the coupling effect of nanoparticles in the visible spectrum region to improve absorption efficiency. However, it is still a difficult task to improve solar energy absorption by adjusting the structure and performance of nanoparticles. In this paper, a plasma dimer Ag nanoparticle is proposed to excite localized surface plasmon resonance (LSPR). Compared with an ordinary Ag nanoparticle in the visible region, the plasmonic Ag dimer nanoparticle produces more absorption peaks and broader absorption bands, which can broaden solar energy absorption. By analyzing the electromagnetic field of the nanoparticle, the resonance mode of the plasma dimer is discussed. The effects of the geometric dimensions of the nanoparticle and the embedding of two spheres on the optical properties are studied. In addition, the effects of a trimer and its special structure on the optical properties are also analyzed. The results show that the proposed plasma dimer Ag nanoparticle has broad prospects for application in solar thermal conversion technology.

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“…Moreover, the heat power density is calculated by [ 45 ]

Section: Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optical Properties of Plasma Dimer Nanoparticles for Solar Energy Absorption

Sun

Qin

Zhai³

et al. 2021

Nanomaterials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, the peak at the longer wavelength, which is expected to be assigned to the less-order mode, exhibits a larger blue shift [44,45]. Furthermore, the weakening of mode coupling and less peak splitting is expected from the formation of the pits when considering the mode coupling efficiency [46,47]. Optical simulation analysis was performed to clarify the unexpected peak splitting behavior and to investigate the effect of pits on the LSPR characteristics of plasmonic devices.…”

Section: Re-shaping Effect On the Optical Characteristics Of Plasmonic Devices Based On Processed Cop Moldsmentioning

confidence: 99%

Modulating Optical Characteristics of Nanoimprinted Plasmonic Device by Re-Shaping Process of Polymer Mold

et al. 2021

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Metal nanostructures exhibit specific optical characteristics owing to their localized surface plasmon resonance (LSPR) and have been studied for applications in various optical devices. The LSPR property strongly depends on the size and shape of metal nanostructures; thus, plasmonic devices must be designed and fabricated according to their uses. Nanoimprint lithography (NIL) is an effective process for repeatedly fabricating metal nanostructures with controlled sizes and shapes and require optical properties. NIL is a powerful method for mass-producible, low-cost, and large-area fabrication. However, the process lacks flexibility in adjusting the size and shape according to the desirable optical characteristics because the size and shape of metal nanostructures are determined by a single corresponding mold. Here, we conducted a re-shaping process through the air-plasma etching of a polymer’s secondary mold (two-dimensional nanopillar array made of cyclo-olefin polymer (COP)) to modulate the sizes and shapes of nanopillars; then, we controlled the spectral characteristics of the imprinted plasmonic devices. The relationship between the structural change of the mold, which was based on etching time, and the optical characteristics of the corresponding plasmonic device was evaluated through experiments and simulations. According to evaluation results, the diameter of the nanopillar was controlled from 248 to 139 nm due to the etching time and formation of a pit structure. Consequently, the spectral properties changed, and responsivity to the surrounding dielectric environment was improved. Therefore, plasmonic devices based on the re-shaped COP mold exhibited a high responsivity to a refractive index of 906 nm/RIU at a wavelength of 625 nm.

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“…Therefore, MIM nanostructures are expected to be applied to obtain multiple kinds information from a sample by utilizing the property of forming electric fields at different spatial locations, in combination with spatial material distribution. However, previously reported MIM nanostructures used SiO 2 , which has high chemical stability, as the insulator layer, the LSP mode which was reported to form an electric field in the dielectric layer formed by the LSP-LSP interaction was not used for detection [37][38][39]. In other words, the multi-mode properties of MIM nanostructures have never been applied to measurements.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Metal-Insulator-Metal Nanostructures Composed of Au-MgF2-Au and Its Potential in Responding to Two Different Factors in Sample Solutions Using Individual Plasmon Modes

et al. 2022

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In this paper, metal–insulator–metal (MIM) nanostructures, which were designed to exhibit two absorption peaks within 500–1100 nm wavelength range, were fabricated using magnesium difluoride (MgF2) as the insulator layer. Since the MIM nanostructures have two plasmon modes corresponding to the absorption peaks, they independently responded to the changes in two phases: the surrounding medium and the inside insulator layer, the structure is expected to obtain multiple information from sample solution: refractive index (RI) and molecular interaction between solution components and the insulator layer. The fabricated MIM nanostructure had a diameter of 139.6 ± 2.8 nm and a slope of 70°, and exhibited absorption peaks derived from individual plasmon modes at the 719 and 907 nm wavelengths. The evaluation of the response to surrounding solution component of the MIM nanostructures revealed a linear response of one plasmon mode toward the RI of the surrounding medium and a large blue shift of the other plasmon mode under conditions where glycerol was present at high concentration. From optical simulation and the evaluation of the MgF2 fabricated by deposition, the blue shift was expected to be due to the swelling of MgF2 interacting with the hydroxyl groups abundantly included in the glycerol molecules. The results indicated the individual responses of two plasmon modes in MIM nanostructures toward medium components, and brought the prospect for the simultaneous measurement of multiple elements using two or more plasmon modes.

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Absorption characteristics of a metal-insulator-metal nanodisk for solar thermal applications

Cited by 36 publications

References 52 publications

Optical Properties of Plasma Dimer Nanoparticles for Solar Energy Absorption

Optical Properties of Plasma Dimer Nanoparticles for Solar Energy Absorption

Modulating Optical Characteristics of Nanoimprinted Plasmonic Device by Re-Shaping Process of Polymer Mold

Fabrication of Metal-Insulator-Metal Nanostructures Composed of Au-MgF2-Au and Its Potential in Responding to Two Different Factors in Sample Solutions Using Individual Plasmon Modes

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