Widely Tunable Plasmon Resonances from Visible to Near-Infrared of Hollow Silver Nanoshells

Kado, Shinpei; Yokomine, Shoichi; Kimura, Kazuhiro

doi:10.1246/bcsj.20160389

Cited by 13 publications

(25 citation statements)

References 51 publications

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“…Smith et al used flake particles in the binder to make colorful energy-efficient coatings that reduce solar absorptance with respect to other commercial paints that gives the same color output. Use of plain and core–shell nanoparticles to produce color is studied by Yong et al Tunability of plasmon resonances in the visible wavelength for the core–shell particle has been further inspected by Kado et al In this study, we demonstrate that colored surfaces with positive net radiative cooling power can be achieved by embedding plain and core–shell nanoparticles in a silica matrix.…”

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confidence: 60%

Colored Radiative Cooling Coatings with Nanoparticles

et al. 2020

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Daytime radiative cooling under sunlight can be achieved by reflecting solar irradiation and emitting infrared thermal radiation in the transparency regions of earth atmosphere. For the sake of aestheticism, control over coloration would be a clear added value for the automobile body or walls of a building. Since coloration decreases cooling performances because of solar absorption in the visible range, mitigating the loss in radiative cooling power requires selective narrowband absorption in the visible range. In order to make a compromise between aestheticism and energetic efficiency, we aim in this paper to obtain colored surfaces with mitigated sunlight absorption and high emission in the infrared. In this numerical study, we demonstrate that appropriate optical properties can be achieved with plasmonic core−shell nanoparticles (silica core, silver shell) and plain silver nanoparticles embedded in a silica and polydimethylsiloxane matrix. Spectral properties of the composites are obtained by Monte Carlo method. Varying the radii of the core and shell allows tuning the spectral position of the surface plasmon resonance, leading to different colors. It is possible to obtain multiple absorption peaks and therefore additional colors by mixing particles with different geometries. Eventually, increasing the volume fraction of nanoparticles leads to more vivid colors but also to a decrease of radiative cooling power. In conclusion, the structure that is proposed can be used for daytime radiative cooling with large control over the coloration.

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confidence: 60%

Colored Radiative Cooling Coatings with Nanoparticles

et al. 2020

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“…Noble‐metal nanocrystals (NCs) are very important for applications in fields such as electrochemistry, electronics, magnetic storage, catalyst, and biotechnology . The properties of a metal NC are dependent on its morphology, including size and shape .…”

Section: Introductionmentioning

confidence: 99%

“…Noble-metal nanocrystals (NCs) are very important for applications in fields such as electrochemistry,e lectronics, magnetic storage, catalyst, andb iotechnology. [1][2][3][4][5][6][7][8][9][10][11][12][13] The properties of a metal NC are dependento ni ts morphology, including size and shape. [1][2][3][4][5][6] Therefore, many methods for the preparation of NCs with various shapes, such as nanoflowers, [14][15][16][17] nanocubes, [18][19][20][21] nanorods, [22][23][24] and nanowires, [25][26][27][28][29][30][31] with the desired properties have been reported.…”

Section: Introductionmentioning

confidence: 99%

Au–Ag Nanoflower Catalysts with Clean Surfaces for Alcohol Oxidation

Imura

Akiyama

Furukawa

et al. 2019

Chemistry An Asian Journal

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Shape‐controlled metal nanocrystals, such as nanowires and nanoflowers, are attractive owing to their potentially novel catalytic properties and bimetallic nanocrystals composed of two distinct metals are expected to act as highly active catalysts. However, their catalytic activities are limited because of the capping agents adsorbed on the metal surfaces, which are necessary for the preparation and dispersion of these nanocrystals in solvents. Therefore, the preparation of bimetallic shape‐controlled noble metal nanocrystals with clean surfaces, devoid of almost all capping agents, are expected to have high catalytic activity. Herein, we report the preparation of bimetallic Au–Ag nanoflowers using melamine as the capping agent. The bimetallic Au–Ag nanoflowers with a clean surface were subsequently obtained by a support and extraction method. The bimetallic nanoflowers with a clean surface were then used for the aerobic oxidation of 1‐phenylethyl alcohol and they exhibited high rates for the formation of acetophenone compared to Au nanoflowers and spherical nanoparticles with almost the same size and Au/Ag ratio. We also show that Au–Ag nanoflowers containing only 1 % Ag (Au99–Ag1NFs) exhibit the highest rate of acetophenone formation among Au–Ag nanoflowers with different Au/Ag ratios owing to an increase in the electron density of the Au atoms that act as active sites for the oxidation of 1‐phenylethyl alcohol.

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“…Unfortunately, to date there are not a substantial quantity of reports on nanoshells capable of supporting LSPR bands at Telecom wavelengths, and the sensitivities reported in the VIS are low when compared to the other geometries [ 192 , 193 ]. Two of the scarce examples on the use of nanoshells at Telecom wavelengths is the one reported in [ 3 ], where the authors reported an etched FBG functionalized with nanoshell NPs, as a refractometric sensor for RI values from 1.333 to 1.346.…”

Section: Nanostructuresmentioning

confidence: 99%

Advances in Plasmonic Sensing at the NIR—A Review

Santos

Almeida

Pastoriza‐Santos

et al. 2021

Sensors

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Surface plasmon resonance (SPR) and localized surface plasmon resonance (LSPR) are among the most common and powerful label-free refractive index-based biosensing techniques available nowadays. Focusing on LSPR sensors, their performance is highly dependent on the size, shape, and nature of the nanomaterial employed. Indeed, the tailoring of those parameters allows the development of LSPR sensors with a tunable wavelength range between the ultra-violet (UV) and near infra-red (NIR). Furthermore, dealing with LSPR along optical fiber technology, with their low attenuation coefficients at NIR, allow for the possibility to create ultra-sensitive and long-range sensing networks to be deployed in a variety of both biological and chemical sensors. This work provides a detailed review of the key science underpinning such systems as well as recent progress in the development of several LSPR-based biosensors in the NIR wavelengths, including an overview of the LSPR phenomena along recent developments in the field of nanomaterials and nanostructure development towards NIR sensing. The review ends with a consideration of key advances in terms of nanostructure characteristics for LSPR sensing and prospects for future research and advances in this field.

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Widely Tunable Plasmon Resonances from Visible to Near-Infrared of Hollow Silver Nanoshells

Cited by 13 publications

References 51 publications

Colored Radiative Cooling Coatings with Nanoparticles

Colored Radiative Cooling Coatings with Nanoparticles

Au–Ag Nanoflower Catalysts with Clean Surfaces for Alcohol Oxidation

Advances in Plasmonic Sensing at the NIR—A Review

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