Multi-layer composite structure covered polytetrafluoroethylene for visible-infrared-radar spectral Compatibility

Dong, Qin; Cheng, Yongzhi; Wang, Xian; Wang, Fang; Li, Bowen; Gong, Rongzhou

doi:10.1088/1361-6463/aa95a9

Cited by 25 publications

(11 citation statements)

References 21 publications

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“…1D PC has been widely studied and applied in the field of infrared stealth, and Ge/ZnS multilayer emitter has been proved to be a useful wavelength‐selective emitter. [ 14,30 ] Therefore, Ge/ZnS wavelength‐selective emitter is selected in this work. The structure of Ge/ZnS wavelength‐selective emitter is optimized by an optimization program.…”

Section: Design and Theorymentioning

confidence: 99%

“…In addition, doped metal oxide semiconductor particle materials with low infrared emittance can also be used as additives. [9][10][11] With the development of metamaterial technology, there are many studies on controlling the surface emittance via metamaterials, [12] such as photonic crystals, [13,14] artificially designed frequency selective absorbers, [15,16] metamaterial absorbers, [17][18][19] etc. The control of the surface temperature is often ignored in the research of controlling the surface emittance.…”

Section: Introductionmentioning

confidence: 99%

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Design of a Hybrid Structure for Controlling Infrared Characteristic Based on Photonic Crystals with Active Thermal Management

Song

Xie

2022

Physica Status Solidi (a)

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Control technology for infrared characteristic has been a hot topic for decades. Herein, a hybrid structure for controlling infrared characteristic combining a wavelength‐selective emitter, microchannel heat exchanger, and thermal barrier coatings (TBC) is proposed to tune the surface infrared signature. First, the optimization algorithm is used to optimize the design to realize the spectral selective emission of the surface. The optimized 1D photonic crystal (PC) has high emittance in the 5–8 μm nonatmospheric window (ε 5−8 = 0.723) for radiative cooling and low emittance in the 3–5 and 8–14 μm atmospheric window (ε 3−5 = 0.480 and ε 8−14 = 0.067) for infrared camouflage. Further control of surface temperature is achieved by combining the nanofluid‐cooled microchannel heat exchanger and TBCs. When the Reynolds number is 1000 and the wall heating temperature is 1473.15 K, the IR signal intensity can be reduced by 35.3 dB. This scheme may provide a new idea for infrared characteristic signal control.

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Section: Design and Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of a Hybrid Structure for Controlling Infrared Characteristic Based on Photonic Crystals with Active Thermal Management

Song

Xie

2022

Physica Status Solidi (a)

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“…The control of thermal radiation can only be achieved by changing the temperature of the object, which has great limitations in practical applications. In fact, the ability to control EM absorption and thermal radiation is important in many applications, including infrared detection [1,2], radiative cooling [3][4][5], solar steam engines [6,7], spectral sensors [8], thermal management [9,10] and thermal camouflage [11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Tunable Infrared Detection, Radiative Cooling and Infrared-Laser Compatible Camouflage Based on a Multifunctional Nanostructure with Phase-Change Material

Luo

Zhang

et al. 2022

Nanomaterials

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The nanostructure composed of nanomaterials and subwavelength units offers flexible design freedom and outstanding advantages over conventional devices. In this paper, a multifunctional nanostructure with phase-change material (PCM) is proposed to achieve tunable infrared detection, radiation cooling and infrared (IR)-laser compatible camouflage. The structure is very simple and is modified from the classic metal–dielectric–metal (MIM) multilayer film structure. We innovatively composed the top layer of metals with slits, and introduced a non-volatile PCM Ge2Sb2Te5 (GST) for selective absorption/radiation regulation. According to the simulation results, wide-angle and polarization-insensitive dual-band infrared detection is realized in the four-layer structure. The transformation from infrared detection to infrared stealth is realized in the five-layer structure, and laser stealth is realized in the atmospheric window by electromagnetic absorption. Moreover, better radiation cooling is realized in the non-atmospheric window. The proposed device can achieve more than a 50% laser absorption rate at 10.6 μm while ensuring an average infrared emissivity below 20%. Compared with previous works, our proposed multifunctional nanostructures can realize multiple applications with a compact structure only by changing the temperature. Such ultra-thin, integratable and multifunctional nanostructures have great application prospects extending to various fields such as electromagnetic shielding, optical communication and sensing.

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“…As a result, these structures cannot be amenable to the demand of being compatible with microwave camouflage. One-dimensional photonic crystals (PCs) exhibit low thermal emission based on the photonic band gap, which consists of the periodic alternation of dielectric films, and therefore can meet the demand of microwave transmission . Moreover, the visible reflection spectra can be regulated by adjusting the top nanolayer thickness, which can exhibit various colors for visible camouflage. , However, the visible appearance of colorful PCs is too bright to realize low visibility in some dark environments.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Ge/ZnS Films for Multispectral Camouflage with Low Visibility and Low Thermal Emission

Deng

Qin

et al. 2022

ACS Appl. Nano Mater.

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Multispectral camouflage technology against advanced detection has attracted rising attention in recent years. However, compatible camouflage with low visibility and low thermal emission in a dark background still remains challenging (such as satellites, high-altitude planes, etc.). In this work, a low visibility and low thermal emission nanostructured film with electromagnetic band gap for multispectral camouflage is proposed. The structure demonstrates a Ge/ZnS multilayer for suppressing thermal emission, which is mounted with nanolayered dielectric antireflection stacks to absorb visible light. Also, the all-dielectric configuration ensures microwave transmission for being compatible with microwave camouflage. The fabricated structure shows low reflectance (3.95%) for 300–1100 nm visible-near-IR light, low emissivity for 3–5 μm (0.043) and 8–14 μm (0.093) atmospheric window ranges, and high transmittance (98.86%) for 8–18 GHz microwave range. Moreover, the film exhibits low lightness and suppressed thermal radiation signatures with incident angles up to 60°. The proposed nanostructured Ge/ZnS film paves the way for multispectral camouflage and other applications such as solar–thermal conversion, radiation control, and optical sensing based on electromagnetic wave manipulation.

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Multi-layer composite structure covered polytetrafluoroethylene for visible-infrared-radar spectral Compatibility

Cited by 25 publications

References 21 publications

Design of a Hybrid Structure for Controlling Infrared Characteristic Based on Photonic Crystals with Active Thermal Management

Design of a Hybrid Structure for Controlling Infrared Characteristic Based on Photonic Crystals with Active Thermal Management

Tunable Infrared Detection, Radiative Cooling and Infrared-Laser Compatible Camouflage Based on a Multifunctional Nanostructure with Phase-Change Material

Nanostructured Ge/ZnS Films for Multispectral Camouflage with Low Visibility and Low Thermal Emission

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