A transparent and flexible metasurface with both low infrared emission and broadband microwave absorption

Ma, Yao; Shi, Lihua; Wang, Jianbao; Zhu, Lei; Ran, Yuzhou; Liu, Yicheng; Li, Jie

doi:10.1007/s10854-020-04967-3

Cited by 23 publications

(7 citation statements)

References 24 publications

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“…Besides, stringent processing requirements are inevitable to match the irregular structure of the targets. Another promising alternative configuration refers to the composite with fillers of polar oxides [13], metamaterials [14], carbon [15], conjugate polymers [16], photonic crystal [17], and phase-change materials [18]. As a matter of fact, they are normally macroscopically discontinuous and necessitate external binders or film shapes to achieve structural shaping, whereas the high emissivity additives tend to offset their intrinsic superiority [19].…”

Section: Introductionmentioning

confidence: 99%

Low Infrared Emissivity and Strong Stealth of Ti-Based MXenes

et al. 2022

Research

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Advanced scenario-adaptable infrared (IR) stealth materials are crucial for creating localized closed thermal environments. Low emissivity over the broadest possible band is expected, as is superior mechanical deformability. Herein, we report a series of Ti-based MXenes with naturally low emissivity as ideal IR shielding materials. Over a wavelength ranging from 2.5 to 25 μm, Ti3C2TX film delivers an average emissivity of 0.057 with the lowest point of 0.042. Such a low emissivity coupled with outstanding structural shaping capability is beyond the current grasp. The reflection-dominated mechanism is dissected. Also, some intriguing scenarios of IR stealth for wearable electronic devices and skin thermal control are demonstrated. This finding lights an encouraging path toward next-generation IR shielding by the expanding MXene family.

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Section: Introductionmentioning

confidence: 99%

Low Infrared Emissivity and Strong Stealth of Ti-Based MXenes

et al. 2022

Research

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“…Landy proposed a perfect metamaterial absorber composed of a periodic array of structural cells [1]. Metamaterial absorbers have attracted wide attention, and have been widely used in electromagnetics imaging [2][3][4][5], polarizers [6,7], stealth [8][9][10], and radio frequency [11][12][13]. With the increase in * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 10(b) is the measurement environment of the microwave anechoic chamber, in which the absorbing model is set in the middle of the sample measuring platform. Two horn antennas, in three frequency bands(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(20)(21)(22)(23)(24)(25)(26)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40), are installed on the test interface and connected to the Agilent vector network analyzer (Agilent…”

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confidence: 99%

An ionic liquid-based ultra-broadband absorber with temperature stability, polarization insensitivity, and wide incident angle

zhang¹,

Yang²,

Zhang³

et al. 2023

J. Phys. D: Appl. Phys.

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In this paper, an ultra-broadband absorber based on ionic liquids is proposed. It is an absorber that is a fully enclosed resin container, and the resin is filled with an ionic liquids([EMIM][N(CN)2]) with a circular cross-section. The simulation results show that the single-ring absorber can achieve more than 90% absorption in the microwave range of 12.25-50GHz, and the relative bandwidth reaches 121.29%. Based on the theories of equivalent medium and impedance matching, the mechanism of broadband absorption was explored by analyzing the electromagnetic field distribution and power loss density of the absorber. In addition, the absorber exhibits good thermal stability in the range of 20-100 °C, and has the characteristics of polarization insensitivity and wide incident angle. The proposed metamaterial absorber can be fabricated at a low cost, is environment friendly, and may find potential applications in the fields of electromagnetic energy harvesting and stealth technology.

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“…Flexible metasurfaces have been designed to manipulate the performance of terahertz and optical metamaterials by bending, stretching, and rolling flexible substrates. − Examples range from thin conductive strips on flexible high permittivity pad to indium tin oxide (ITO)-coated poly(ethylene terephthalate) (PET) films on poly(vinyl chloride) (PVC) substrates . Metasurfaces based on EM modulation can be made self-reconfigurable, patterned for surface-enhanced Raman spectroscopy, and provide biomolecular sensing at the interface between chiral and hyperbolic metamaterials .…”

Section: Introductionmentioning

confidence: 99%

“…25−27 Examples range from thin conductive strips on flexible high permittivity pad 28 to indium tin oxide (ITO)-coated poly-(ethylene terephthalate) (PET) films on poly(vinyl chloride) (PVC) substrates. 29 Metasurfaces based on EM modulation can be made self-reconfigurable, 30 patterned for surfaceenhanced Raman spectroscopy, 31 and provide biomolecular sensing at the interface between chiral and hyperbolic metamaterials. 32 One of the advantages of flexible metasurfaces is the miniaturization of the "hard" metamaterial cells because of the shape adaptability offered by ultrathin architected metallic substrates.…”

Section: Introductionmentioning

confidence: 99%

Biobased and Programmable Electroadhesive Metasurfaces

Duigou

Guo

et al. 2022

ACS Appl. Mater. Interfaces

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Electroadhesion has shown the potential to deliver versatile handling devices because of its simplicity of actuation and rapid response. Current electroadhesion systems have, however, significant difficulties in adapting to external objects with complex shapes. Here, a novel concept of metasurface is proposed by combining the use of natural fibers (flax) and shape memory epoxy polymers in a hygromorphic and thermally actuated composite (HyTemC). The biobased material composite can be used to manipulate adhesive surfaces with high precision and controlled environmental actuation. The HyTemC concept is preprogrammed to store controllable moisture and autonomous desorption when exposed to the operational environment, and can reach predesigned bending curvatures up to 31.9 m–1 for concave and 29.6 m–1 for convex shapes. The actuated adhesive surface shapes are generated via the architected metasurface structure, incorporating an electroadhesive component integrated with the programmable biobased materials. This biobased metasurface stimulated by the external environment provides a large taxonomy of shapesfrom flat, circular, single/double concave, and wavy, to piecewise, polynomial, trigonometric, and airfoil configurations. The objects handled by the biobased metasurface can be fragile because of the high conformal matching between contacting surfaces and the absence of compressive adhesion. These natural fiber-based and environmentally friendly electroadhesive metasurfaces can significantly improve the design of programmable object handling technologies, and also provide a sustainable route to lower the carbon and emission footprint of smart structures and robotics.

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A transparent and flexible metasurface with both low infrared emission and broadband microwave absorption

Cited by 23 publications

References 24 publications

Low Infrared Emissivity and Strong Stealth of Ti-Based MXenes

Low Infrared Emissivity and Strong Stealth of Ti-Based MXenes

An ionic liquid-based ultra-broadband absorber with temperature stability, polarization insensitivity, and wide incident angle

Biobased and Programmable Electroadhesive Metasurfaces

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