Plasmonic coloration of silver nanodome arrays for a smartphone-based plasmonic biosensor

Toma, Mana; Tawa, Keiko

doi:10.1039/c9na00315k

Cited by 23 publications

(23 citation statements)

References 51 publications

(74 reference statements)

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“…Due to the fade-resistant nature of structural colors, they can be used in unique and covert product tagging of luxury items, ,, for example, with colorful miniature models, as shown in Figure a, where colors are realized by shrinking three-dimensional (3D) photonic crystals . Another interesting application is colorimetric sensing. − Structural color elements can be designed such that they visually respond to different external stimuli such as temperature, chemicals, and humidity through the use of suitable materials in an optically resonant system. − The benefit of colorimetric sensing is in realizing passive devices that are untethered to an energy source. Figure b depicts a colorimetric sensor in that weakly cross-linked polydimethylsiloxane (PDMS) is used in an FP cavity with a porous Ni film on top.…”

Section: Structural Color Generation Methods and Relevant Applicationsmentioning

confidence: 99%

“…78 Another interesting application is colorimetric sensing. [194][195][196][197][198][199][200][201] Structural color elements can be designed such that they visually respond to different external stimuli such as temperature, chemicals, and humidity through the use of suitable materials in an optically resonant system. [202][203][204][205][206][207][208][209][210][211][212][213] The benefit of colorimetric sensing is in realizing passive devices that are untethered to an energy source.…”

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confidence: 99%

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Nanophotonic Structural Colors

et al. 2020

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Structural colors traditionally refer to colors arising from the interaction of light with structures with periodicities on the order of the wavelength. Recently, the definition has been broadened to include colors arising from individual resonators that can be subwavelength in dimension, e.g., plasmonic and dielectric nanoantennas. For instance, diverse metallic and dielectric nanostructure designs have been utilized to generate structural colors based on various physical phenomena, such as localized surface plasmon resonances (LSPRs), Mie resonances, thin-film Fabry-Pérot interference, and Rayleigh-Wood diffraction anomalies from 2D periodic lattices and photonic crystals. Here, we provide our perspective of the key application areas where structural colors really shine, and other areas where more work is needed. We review major classes of materials and structures employed to generate structural coloration and highlight the main physical resonances involved.

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Section: Structural Color Generation Methods and Relevant Applicationsmentioning

confidence: 99%

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confidence: 99%

Nanophotonic Structural Colors

et al. 2020

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“…Ag nanodomes of 200 nm diameter were fabricated by a similar procedure as described in a previous paper. (14) Briefly, an aqueous solution of PS beads was mixed with methanol with a volume ratio of 1:3, and a spike of Triton X was added as a surfactant (0.2 v%). The surfactant and methanol in the spin-coating solution are important for creating the PS bead layer.…”

Section: Fabrication Of Ag Nanodomesmentioning

confidence: 99%

“…In a previous study, we proposed the use of metal nanodome arrays for plasmonic biosensors based on colorimetric detection, and demonstrated the quantitative detection of biomolecules by measuring shifts of the Hue angle in HSV color space. (14) Metal nanodome arrays are metalcoated polystyrene (PS) bead layers as illustrated in Fig. 1, which are created by a simple bottom-up process.…”

Section: Introductionmentioning

confidence: 99%

Effect of Arrangement of Ag Nanodomes on Performance of Plasmonic Sensor

Toma¹,

Itakura²,

Kajikawa³

2021

Sensors and Materials

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In this study, we investigated the effect of the arrangement of Ag nanodomes on the performance of a plasmonic refractive index sensor. As a template of Ag nanodomes, polystyrene (PS) bead layers with surface coverages of 56 and 90% and a multilayered structure were created. The optical properties and sensing performance of Ag nanodomes were characterized by reflection spectroscopy and bulk refractive index sensing. The Ag nanodomes created on the closely packed and multilayered PS beads exhibited similar reflection spectra and bulk refractive index sensitivity. The differences between these Ag nanodomes were in the resonance wavelength and the corresponding reflective colors. By reducing the surface coverage of PS beads, the reflectance decreased, the resonance dip appeared at a longer wavelength, and the bulk refractive index sensitivity was improved to 516 nm per refractive index unit (RIU). The experimental results revealed that the arrangement of Ag nanodomes has a notable influence on their optical properties and needs to be optimized to improve the performance of plasmonic biosensors.

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“…Hence, the plasmon excited in the GNPs cannot be utilized to enhance the PL of the CDs in the excitation process. The light confinement capability of the PCs is ideal for this purpose because the resonance is tunable for the UV region by adjusting the size and periodicity of the PCs with various substances. ,,, To enhance the PL in both excitation and radiation processes, in this letter, we propose to utilize the resonance effect of the PCs and plasmon for the incident and radiation processes, respectively. This double-resonant scheme is ideal for excitation of the PL from the chromophores since most chromophores show absorption in the UV region.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence from Carbon Dot-Gold Nanoparticle Composites Enhanced by Photonic and Plasmonic Double-Resonant Effects

Kamura

Imura

2020

ACS Omega

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Carbon dots (CDs) exhibit chemical stability and low toxicity, so they are promising for biomedical and imaging applications. The quantum yield of the photoluminescence is typically 10−20%, which limits practical applications. We fabricate carbon dot-gold nanoparticle photonic crystals (CD-GNP PCs) and demonstrate enhanced photoluminescence intensity from the carbon dots using the photonic and plasmonic double-resonant effects. A severalfold enhancement was obtained compared to the neat CD. The method developed in this study provides a universal scheme to enhance light-emitting materials, which is promising for the development of ultrahigh molecular sensing and bioimaging techniques.

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Plasmonic coloration of silver nanodome arrays for a smartphone-based plasmonic biosensor

Abstract: Plasmonic coloration from silver nanodome arrays is successfully implemented in a smartphone-based biosensor enabling sensitive and quantitative detection of biomolecules.

Cited by 23 publications

References 51 publications

Nanophotonic Structural Colors

Nanophotonic Structural Colors

Effect of Arrangement of Ag Nanodomes on Performance of Plasmonic Sensor

Photoluminescence from Carbon Dot-Gold Nanoparticle Composites Enhanced by Photonic and Plasmonic Double-Resonant Effects

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