Colloidal self-assembly based all-metal metasurface absorbers to achieve broadband, polarization-independent light absorption at UV–Vis frequencies

Zhang, Haibin; Feng, Xingdong; Luo, Yanhong; Li, Yuan; Song, Min-Wei; Zhang, Yuanyuan; Jiang, Shendou; Cheng, Yuntao; Liu, Hong

doi:10.1016/j.apsusc.2022.152624

Cited by 14 publications

(5 citation statements)

References 47 publications

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“…Figure a shows a reduced E-field intensity at the gap regions between the adjacent nanobranches of Au NCs, whereas an enhanced E-field intensity appeared at the upper surface and the SiO 2 spacer of MA. We deduce that, although the LSPR mode and the partial GSPR mode could be activated under the extremely small interparticle separation, high surface reflection of the incident light directly led to the limited GSPR mode occurring between the individual nanobranches, , causing a possible barren absorption behavior for the designed MA.…”

Section: Resultsmentioning

confidence: 94%

“…Figure shows the schematic geometry of the typical MA realized in this work. Specifically, the MA from the bottom to the top is consisted of a silicon substrate coated with an optically thick Au film followed by a nanoscale-thick dielectric SiO 2 spacer, and interestingly, at the top, the chemically synthesized colloidal Au NCs are arranged with a suitable surface coverage acting as the plasmonic absorptive layer. ,− In particular, the Au NCs present hierarchical architectures, which are composed of many “V”-shaped branches reaching in different directions. As such, the incident light may be effectively trapped and absorbed due to the multiple interference and reflection between these Au NCs.…”

Section: Introductionmentioning

confidence: 99%

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Metasurface Absorbers with Film-Coupled Au Nanoclusters to Achieve Broadband and Polarization-Independent Absorption of UV–Vis Light

Zhang,

Feng,

Yuan

et al. 2023

ACS Appl. Mater. Interfaces

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Metasurface absorbers (MAs) have attracted widespread interest in the recent study of subwavelength artificial optical metasurfaces, although most reported MAs suffer from the actualities of costly and time-consuming fabrications, narrow working bandwidth, polarization-dependent responses, etc., somewhat limiting their practical applications. Herein, we introduce a facile and low-cost method to fabricate MAs with excellent absorption performances via the self-assembly of synthesized Au nanoclusters (NCs) on a Au film spaced by a nanoscale-thick dielectric SiO2. Interestingly, the proposed MAs with well-designed Au film-coupled Au NCs (i.e., an appropriate surface coverage of Au NCs and the compatible thickness of the SiO2 spacer) exhibited a measured average absorbance above 90% within a broad UV–vis wavelength band (200–800 nm). In addition, owing to the MAs’ topological symmetry, their UV–vis absorption behaviors presented polarization insensitivity with the incident light angles ranging from 20 to 50°. It has been demonstrated that the excited different surface plasmon resonance modes between Au NCs and the adjacent Au film were vital; in addition, the light-trapping effects from “V”-shaped structures of Au NCs were favorable for the designed MAs with enhanced light absorption. We believe that such MAs and the potential self-assembly fabrication strategy may facilitate scalable optical applications such as photothermalvoltaics, ultraviolet protection, optical storage, and sensing.

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Section: Resultsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Metasurface Absorbers with Film-Coupled Au Nanoclusters to Achieve Broadband and Polarization-Independent Absorption of UV–Vis Light

Zhang,

Feng,

Yuan

et al. 2023

ACS Appl. Mater. Interfaces

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“…In addition, Au nanostructure is known as an excellent LSPR material, owing to the strong absorption toward the photon energy and the outstanding electrochemical properties. [43][44][45][46][47] Recently, LSPR technology has been considered to improve the efficiency of electrocatalytic process by using solar energy. [48][49][50] Due to the existence of Au-NWs, the electrocatalytic activity of Co 3 O 4 -NS/Au-NWs nanohybrids for NO 3 RR could be enhanced by plasmon.…”

Section: Lspr-promoted Behavior Toward No 3 Rrmentioning

confidence: 99%

Au Nanowires Decorated Ultrathin Co₃O₄ Nanosheets toward Light‐Enhanced Nitrate Electroreduction

Zhang

Hong

Wang

et al. 2023

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Nitrate is a reasonable alternative instead of nitrogen for ammonia production due to the low bond energy, large water‐solubility, and high chemical polarity for good absorption. Nitrate electroreduction reaction (NO3RR) is an effective and green strategy for both nitrate treatment and ammonia production. As an electrochemical reaction, the NO3RR requires an efficient electrocatalyst for achieving high activity and selectivity. Inspired by the enhancement effect of heterostructure on electrocatalysis, Au nanowires decorated ultrathin Co3O4 nanosheets (Co3O4‐NS/Au‐NWs) nanohybrids are proposed for improving the efficiency of nitrate‐to‐ammonia electroreduction. Theoretical calculation reveals that Au heteroatoms can effectively adjust the electron structure of Co active centers and reduce the energy barrier of the determining step (*NO → *NOH) during NO3RR. As the result, the Co3O4‐NS/Au‐NWs nanohybrids achieve an outstanding catalytic performance with high yield rate (2.661 mg h−1 mgcat−1) toward nitrate‐to‐ammonia. Importantly, the Co3O4‐NS/Au‐NWs nanohybrids show an obviously plasmon‐promoted activity for NO3RR due to the localized surface plasmon resonance (LSPR) property of Au‐NWs, which can achieve an enhanced NH3 yield rate of 4.045 mg h−1 mgcat−1. This study reveals the structure–activity relationship of heterostructure and LSPR‐promotion effect toward NO3RR, which provide an efficient nitrate‐to‐ammonia reduction with high efficiency.

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“…In other words, the enhanced absorption and detection only occur at a relatively narrow wavelength band. Only for the purpose of broadband absorption without integration into the PPD architecture, various schemes are also demonstrated including the composite meta-units with different dimensions or geometries that are arranged in vertical [25,26] or parallel [25,27,28] direction, the integration of all-dielectric or all-metal metasurface [29][30][31], the integration of multiple plasmonic resonance or multipole resonance [32][33][34][35][36] and the multipolar interference [37,38]. However, most of those schemes are intrinsically incompatible with PPD structures or too complex for compact device integration.…”

Section: Introductionmentioning

confidence: 99%

Mid-infrared pyroelectric detector with metasurface electrode for broadband enhanced absorption

Zou

Chen

Sun

et al. 2023

J. Phys. D: Appl. Phys.

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Pyroelectric photodetector (PPD) has continuously been an attractive candidate due to its noncryogenic and easy-to-fabricate specific. For the detectivity or resolution of pyroelectric detector is closely related with the absorptivity to incident radiation, we propose a scheme of metasurface-based pyroelectric detector (MPPD) by constructing its top electrode with an absorptive metasurface composed of nanogrid-patch units. The resonance modes of Fabry-Perot cavity, magnetic dipole and electric dipole are collectively leveraged for the mid-infrared MPPD with optimal broadband absorption plus three absorptive peaks at 3.13 μm , 3.94 μm and 4.8 μm . The mechanisms and field distributions of those resonance peaks are intensively explored and verified for configuration of the metasurface top electrode with optimized geometries. Finally, our scheme achieves an average absorptivity of 94.2% in the mid-infrared range of 3-5 μm , with its thermal response enhanced by 2.6 times that results in the significantly improved pyroelectric current for the detector.

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Colloidal self-assembly based all-metal metasurface absorbers to achieve broadband, polarization-independent light absorption at UV–Vis frequencies

Cited by 14 publications

References 47 publications

Metasurface Absorbers with Film-Coupled Au Nanoclusters to Achieve Broadband and Polarization-Independent Absorption of UV–Vis Light

Metasurface Absorbers with Film-Coupled Au Nanoclusters to Achieve Broadband and Polarization-Independent Absorption of UV–Vis Light

Au Nanowires Decorated Ultrathin Co₃O₄ Nanosheets toward Light‐Enhanced Nitrate Electroreduction

Mid-infrared pyroelectric detector with metasurface electrode for broadband enhanced absorption

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Colloidal self-assembly based all-metal metasurface absorbers to achieve broadband, polarization-independent light absorption at UV–Vis frequencies

Cited by 14 publications

References 47 publications

Metasurface Absorbers with Film-Coupled Au Nanoclusters to Achieve Broadband and Polarization-Independent Absorption of UV–Vis Light

Metasurface Absorbers with Film-Coupled Au Nanoclusters to Achieve Broadband and Polarization-Independent Absorption of UV–Vis Light

Au Nanowires Decorated Ultrathin Co3O4 Nanosheets toward Light‐Enhanced Nitrate Electroreduction

Mid-infrared pyroelectric detector with metasurface electrode for broadband enhanced absorption

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Product

Resources

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Au Nanowires Decorated Ultrathin Co₃O₄ Nanosheets toward Light‐Enhanced Nitrate Electroreduction