Monolayer-Graphene-Based Tunable Absorber in the Near-Infrared

Cao, Shuhua; Wang, Qi; Gao, Xufeng; Zhang, Shijie; Hong, Richang; Zhang, Dawei

doi:10.3390/mi12111320

Cited by 6 publications

(4 citation statements)

References 25 publications

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“…Since monolayer graphene was first mechanically exfoliated from graphite in 2004 [1], its excellent physical, chemical, and mechanical properties have attracted extensive attention [2][3][4][5][6][7]. At the same time, the graphene-like two-dimensional (2D) transition metal dichalcogenides (TMDCs) have attracted widespread attention due to their single-layer characteristics and their excellent mechanical properties similar to those of graphene [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Static Bending and Forced Vibrations of Single-Layer MoS2 with Thermal Stress

Chen,

Huang,

Zhang

2024

Materials

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Single-layer molybdenum disulfide (MoS2) has been a research focus in recent years owing to its extensive potential applications. However, how to model the mechanical properties of MoS2 is an open question. In this study, we investigate the nonlinear static bending and forced vibrations of MoS2, subjected to boundary axial and thermal stresses using modified plate theory with independent in-plane and out-of-plane stiffnesses. First, two nonlinear ordinary differential equations are obtained using the Galerkin method to represent the nonlinear vibrations of the first two symmetrical modes. Second, we analyze nonlinear static bending by neglecting the inertial and damping terms of the two equations. Finally, we explore nonlinear forced vibrations using the method of multiple scales for the first- and third-order modes, and their 1:3 internal resonance. The main results are as follows: (1) The thermal stress and the axial compressive stress reduce the MoS2 stiffness significantly. (2) The bifurcation points of the load at the low-frequency primary resonance are much smaller than those at high frequency under single-mode vibrations. (3) Temperature has a more remarkable influence on the higher-order mode than the lower-order mode under the 1:3 internal resonance.

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Section: Introductionmentioning

confidence: 99%

Nonlinear Static Bending and Forced Vibrations of Single-Layer MoS2 with Thermal Stress

Chen,

Huang,

Zhang

2024

Materials

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“…Many studies have explored the coupling of graphene to plasmonic structures, mostly in the infrared region. It has been demonstrated that graphene can be used to modulate the plasmonic response by modifying the dielectric properties. − This can be achieved by both electrical gating and chemical doping. When the graphene layer overlaps with the electric field hot spot, it can have remarkable effects on the modulation of the plasmonic spectra, even in the visible wavelength range. ,,, …”

Section: Introductionmentioning

confidence: 99%

Spectral Tuning of a Nanoparticle-on-Mirror System by Graphene Doping and Gap Control with Nitric Acid

Lawless

McCormack

Pepper

et al. 2023

ACS Appl. Mater. Interfaces

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Nanoparticle-on-mirror systems are a stable, robust, and reproducible method of squeezing light into sub-nanometer volumes. Graphene is a particularly interesting material to use as a spacer in such systems as it is the thinnest possible 2D material and can be doped both chemically and electrically to modulate the plasmonic modes. We investigate a simple nanoparticle-on-mirror system, consisting of a Au nanosphere on top of an Au mirror, separated by a monolayer of graphene. With this system, we demonstrate, with both experiments and numerical simulations, how the doping of the graphene and the control of the gap size can be controlled to tune the plasmonic response of the coupled nanosphere using nitric acid. The coupling of the Au nanosphere and Au thin film reveals multipolar modes which can be tuned by adjusting the gap size or doping an intermediate graphene monolayer. At high doping levels, the interaction between the charge-transfer plasmon and gap plasmon leads to splitting of the plasmon energies. The study provides evidence for the unification of theories proposed by previous works investigating similar systems.

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“…However, it is not typically utilized as a laser absorber. Given graphene's zero-band-gap structure, where the conduction band and valence band intersect, and the presence of a large number of conjugate systems (consisting of numerous benzene ring structures) in the graphene molecular structure, graphene can exhibit remarkably broad spectral absorption bands [17,18]. Graphene demonstrates pronounced nonlinear and strong light absorption when subjected to intense illumination [19].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of High-Performance Composite Coatings Compatible with Near-Infrared Low Reflectivity and Low Infrared Emissivity

Zhuang,

Zhang,

Zhang

2023

Coatings

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Polyurethane (PU)/Al-graphene composite coating with low infrared emissivity, a low near-infrared reflectivity of 1.06 μm, and satisfactory mechanical properties was prepared by using Al powder and graphene as composite pigments and PU as a binder, respectively. The study investigated the impact of the mass ratio of graphene to Al powder, as well as the total addition of functional fillers (Al powder and graphene), on infrared emissivity and near-infrared reflectivity, and the mechanical properties of the coating were studied. The results show that a large number of conjugated systems in the molecular structure of graphene can produce strong absorption of near-infrared radiation, allowing for the coating to exhibit low reflectivity at 1.06 μm in near-infrared radiation. The flake Al powder, with good electrical conductivity, can create a strong reflection in the 8–14 μm far-infrared radiation range, resulting in low emissivity and providing the coating with good infrared and laser-compatible stealth performance. By adjusting the mass ratio of graphene to Al powder, the infrared emissivity at 8–14 μm can be tuned from 0.371 to 0.644, and the reflectivity at 1.06 μm can be adjusted from 22.9% to 61.6%. Additionally, the coatings demonstrate satisfactory mechanical properties, with adhesion strength, flexibility, and impact strength reaching grade 1, 2 mm, and 50 kg · cm, respectively, for coatings with different mass ratios of graphene to Al powder. The PU/Al-graphene composite coating can be regarded as a new type of infrared and laser compatible stealth coating with good functional and mechanical properties.

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Monolayer-Graphene-Based Tunable Absorber in the Near-Infrared

Cited by 6 publications

References 25 publications

Nonlinear Static Bending and Forced Vibrations of Single-Layer MoS2 with Thermal Stress

Nonlinear Static Bending and Forced Vibrations of Single-Layer MoS2 with Thermal Stress

Spectral Tuning of a Nanoparticle-on-Mirror System by Graphene Doping and Gap Control with Nitric Acid

Preparation and Characterization of High-Performance Composite Coatings Compatible with Near-Infrared Low Reflectivity and Low Infrared Emissivity

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