Colorization of passive radiative cooling coatings using plasmonic effects

Pirouzfam, Niloufar; Mengüç, M. Pınar; Şendur, Kürşat

doi:10.1016/j.solmat.2023.112225

Cited by 11 publications

(6 citation statements)

References 34 publications

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“…Recently, a variety of new types of plasmon nanoantennas such as nanocube, nanorod, nanostar, bowtie nanoantenna and honeycomb nanoantenna with resonance wavelength in the range from visible to near-infrared spectroscopy have been designed to improve electromagnetic field [22][23][24][25], which can widely extend the applicability in surface science, photothermal conversion, optoelectronic device and biosensing [26][27][28][29][30][31]. In the above plasmonic structure, the novel bowtie nanoantenna, composed of two metallic triangular plates, in particular is one of the most promising candidates for surface-enhanced photoluminescence spectroscopy since it can simultaneously enhance and confine electric field at sharp tips and tiny gaps.…”

Section: Introductionmentioning

confidence: 99%

Surface-enhanced photoluminescence and Raman spectroscopy of single molecule confined in coupled Au bowtie nanoantenna

Pei,

Peng,

Zhang

et al. 2024

Nanotechnology

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Optical nanoantennas possess broad applications in the fields of photodetection, environmental science, biosensing and nonlinear optics, owing to their remarkable ability to enhance and confine the optical field at the nanoscale. In this article, we present a theoretical investigation of surface-enhanced photoluminescence spectroscopy for single molecules confined within novel Au bowtie nanoantenna, covering a wavelength range from the visible to near-infrared spectral regions. We employ the finite element method to quantitatively study the optical enhancement properties of the plasmonic field, quantum yield, Raman scattering and fluorescence. Additionally, we systematically examine the contribution of nonlocal dielectric response in the gap mode to the quantum yield, aiming to gain a better understanding of the fluorescence enhancement mechanism. Our results demonstrate that altering the configuration of the nanoantenna has a significant impact on plasmonic sensitivity. The nonlocal dielectric response plays a crucial role in reducing the quantum yield and corresponding fluorescence intensity when the gap distance is less than 3 nm. However, a substantial excitation field can effectively overcome fluorescence quenching and enhance the fluorescence intensity. By optimizing nanoantenna configuration, the maximum enhancement of surface-enhanced Raman can be turned to 9 and 10 magnitude orders in the visible and near-infrared regions, and 3 and 4 magnitude orders for fluorescence enhancement, respectively. The maximum spatial resolutions of 0.8 nm and 1.5 nm for Raman and fluorescence are also achieved, respectively. Our calculated results not only provide theoretical guidance for the design and application of new nanoantennas, but also contribute to expanding the range of surface-enhanced Raman and fluorescence technology from the visible to the near-infrared region.

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Section: Introductionmentioning

confidence: 99%

Surface-enhanced photoluminescence and Raman spectroscopy of single molecule confined in coupled Au bowtie nanoantenna

Pei,

Peng,

Zhang

et al. 2024

Nanotechnology

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“…In contrast to localized surface plasmons resonances, TPs are polarization independent and can be excited with high quality factor at normal incidence angle, without the need for phase-matching techniques like a grating or prism coupling. , Beside this advantageous operative feature, the relative simplicity of the planar structure necessary to achieve the TP resonance lends itself to both facile fabrication (i.e., spin casting or sol–gel deposition , ) and large-scale fabrication procedures. So far, TPs have been utilized for many purposes, including lasing, modification of light-matter interaction, − radiative coolers, thermal emitters, and optical sensors, ,− among others. However, this comes with a disadvantage, as the electric field distribution of the TP mode is located predominantly at the DBR/metal interface, thus being almost inaccessible to external stimuli.…”

Section: Introductionmentioning

confidence: 99%

Tamm Plasmon Resonance as Optical Fingerprint of Silver/Bacteria Interaction

Normani

Bertolotti

Bisio

et al. 2023

ACS Appl. Mater. Interfaces

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The incorporation of responsive elements into photonic crystals is an effective strategy for fabricating active optical components to be used as sensors, actuators, and modulators. In particular, the combination of simple multilayered dielectric mirrors with optically responsive plasmonic materials has proven to be successful. Recently, Tamm plasmon (TP) modes have emerged as powerful tools for these purposes. These modes arise at the interface between a distributed Bragg reflector (DBR) and a plasmonic layer and can be excited at a normal incidence angle. Although the TP field is located usually at the DBR/metal interface, recent studies have demonstrated that nanoscale corrugation of the metal layer permits access to the TP mode from outside, thus opening exciting perspectives for many real-life applications. In this study, we show that the TP resonance obtained by capping a DBR with a nanostructured layer of silver is responsive to Escherichia coli. Our data indicate that the modification of the TP mode originates from the well-known capability of silver to interact with bacteria, within a process in which the release of Ag+ ions leaves an excess of negative charge in the metal lattice. Finally, we exploited this effect to devise a case study in which we optically differentiated between the presence of proliferative and nonproliferative bacteria using the TP resonance as a read-out. These findings make these devices promising all-optical probes for bacterial metabolic activity, including their response to external stressors.

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“…Passive radiative cooling is a widespread phenomenon that relies on the balance of radiative heat flow to release excess heat to the surroundings via the atmospheric long-wave infrared transmission window (8-13 μm). To find an effective design for passive radiative cooling, various structures are proposed in the literature such as a multilayer design [4], plasmonic structure [5], [6] and metamaterial [7]. Metamaterials due to their optical properties can be selectively designed by adjusting structural parameters.…”

Section: Introductionmentioning

confidence: 99%

A bowtie antenna plasmonic metamaterial emitter for high-performance radiative cooling

Pirouzfam

Şendur

2023

Metamaterials XIV

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Passive radiative cooling has garnered significant attention in recent years due to its potential in addressing the energy consumption of conventional cooling systems. Plasmonic and metamaterial structures have been found to be effective broadband absorbers due to their selective emissive spectra, thin thickness, design flexibility, and the ability to excite plasmonic or photonic resonances. This study explores the use of bowtie shape plasmonic metamaterials for the development of novel, structurally simple radiative cooling devices. We show that by designing and optimizing a periodic high index-low index alternating layers (SiO2-TiO2), broadband reflection in visible and near-infrared spectrums is achievable. While to achieve broadband absorption in the transparency window (8-13 um), metamaterial is utilized.

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Colorization of passive radiative cooling coatings using plasmonic effects

Cited by 11 publications

References 34 publications

Surface-enhanced photoluminescence and Raman spectroscopy of single molecule confined in coupled Au bowtie nanoantenna

Surface-enhanced photoluminescence and Raman spectroscopy of single molecule confined in coupled Au bowtie nanoantenna

Tamm Plasmon Resonance as Optical Fingerprint of Silver/Bacteria Interaction

A bowtie antenna plasmonic metamaterial emitter for high-performance radiative cooling

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