Investigation of terahertz waves propagating through far infrared/CO2 laser stealth-compatible coating based on one-dimensional photonic crystal

Wang, Qichao; Wang, Jiachun; Zhao, Dapeng; Zhang, Jikui; Li, Zhigang; Chen, Zongsheng; Zeng, Jie; Liu, Miao; Shi, Junbo

doi:10.1016/j.infrared.2016.10.006

Cited by 20 publications

(7 citation statements)

References 25 publications

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“…Terahertz waves are electromagnetic radiation in the frequency band of 0.1 THz to 10 THz, which is located between the microwave and infrared bands in the electromagnetic spectrum. As a newly developed frequency window, terahertz waves enjoy broad application prospects in the fields of physics, chemistry, communications, radar, medicine, and security due to their unique electromagnetic properties [1][2][3][4][5]. The spectrum of materials in the terahertz band contains a wealth of physical and chemical information.…”

Section: Introductionmentioning

confidence: 99%

Vibration and Terahertz Wave Absorption Characteristics of Graphene Material

Wang

Qiu

Han

et al. 2023

J. Phys.: Conf. Ser.

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In this study, theoretical calculation of the molecular vibration frequency of graphene materials in the range of 0.1~10 THz was carried out using density functional theory, and the vibration mode of graphene molecules was analyzed. THz time domain spectrometer was employed to test the absorption spectra of graphene materials in the 0.2~3.5 THz frequency band, and the assignments of the absorption characteristic peaks of graphene were identified respectively. The results show that the graphene material produces resonance absorption of terahertz waves due to the interaction of intramolecular C-C at frequencies around 1.92 THz and 2.11 THz, and the calculated results are highly consistent with the experimental results.

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Section: Introductionmentioning

confidence: 99%

Vibration and Terahertz Wave Absorption Characteristics of Graphene Material

Wang

Qiu

Han

et al. 2023

J. Phys.: Conf. Ser.

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“…In addition, more and more electromagnetic wave absorption and high reflection in the infrared atmospheric window (3-5 μm, 8-14 μm) band. [6,7] There are many ways to reduce IR absorption, including the use of coated materials, [8][9][10][11] phase change materials, [12] photonic crystals, [6,13,14] metamaterials, [15][16][17] frequency selective hypersurfaces, [18,19] etc.…”

Section: Introductionmentioning

confidence: 99%

“…[ 5 ] According to the law of thermal radiation, it is known that the emissivity in the infrared band is equal to the infrared absorption rate, so to achieve infrared stealth at a certain temperature, which is equivalent to a device or equipment that cannot be detected by an infrared detector, requires targeted generation of low absorption and high reflection in the infrared atmospheric window (3–5 µm, 8–14 µm) band. [ 6,7 ] There are many ways to reduce IR absorption, including the use of coated materials, [ 8–11 ] phase change materials, [ 12 ] photonic crystals, [ 6,13,14 ] metamaterials, [ 15–17 ] frequency selective hypersurfaces, [ 18,19 ] etc.…”

Section: Introductionmentioning

confidence: 99%

Flexible Wearable Ti₃C₂T_x Composite Carbon Fabric Textile with Infrared Stealth and Electromagnetic Interference Shielding Effect

Chen,

Jiang,

Huang

et al. 2023

Advanced Optical Materials

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Ti3C2Tx materials have been developed to have application space in many fields, but there are not many works that can be compatible with infrared (IR) stealth and electromagnetic interference (EMI) shielding at the same time. To realize the multiband high EMI shielding of Ti3C2Tx materials, and to achieve stealth effect in the IR band, in this work, a composite textile is prepared by combining the Ti3C2Tx material with a carbon cloth and sputtering a very thin gold film on the surface. This composite textile can realize high EMI shielding compatible with IR stealth, in which the EMI shielding efficiency for microwave Xa‐band (8GHza‐12.4GHz) is up to 71.8 dB, for microwave Kaa‐band (26.5GHza‐40GHz) is up to 75.02 dB, and for terahertza‐band is about 30 dB. IR emissivity is as low as 0.1, and the lowest emissivity under a certain temperature reaches 0.07, which can withstand a high temperature of 500 °C. In addition, this composite textile has flexible and bendable wear. The thickness of the whole textile is about 400 µm, of which the Ti3C2Tx material thickness is only about 10 µm, the thinnest reaches 2 µm. Such a textile can be used in both people's livelihood and military applications, which has far‐reaching significance.

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“…The application of ZnSe in stealth materials has attracted much attention due to its excellent nonlinear optical performance in the infrared region. − Meanwhile, the great absorption properties of Co in the infrared region provide a choice to incorporate transition metals . The change of the microstructure in one material will affect its optical properties such as absorption, reflection, and transmission.…”

Section: Introductionmentioning

confidence: 99%

Invisibility Cloak Technology of Anti-Infrared Detection Materials Prepared Using CoGaZnSe Multilayer Nanofilms

Pan

Huang²,

Sun

et al. 2021

ACS Appl. Mater. Interfaces

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The development of infrared stealth clothing technology and materials has been widely studied. However, the research of near-infrared stealth clothing still faces some challenges including complex preparation processes, narrow spectral ranges, and poor antidetection efficiency. To solve these questions, a CoGaZnSe multilayer film used for anti-near-infrared detection is designed and prepared by pulse laser deposition (PLD) at different pressures from 2 to 12 Pa. Microstructures of the film can transform from amorphous to crystal at different Ar atmospheres demonstrated by X-ray diffraction, Raman spectroscopy, and theoretical calculations. The films with different transmittances from 10 to 95% are combined with multilayer films for reducing the infrared reflection, which results in the lowest energy loss per unit thickness of 1.01 × 10 −11 dB/cm. The light propagation in the multilayer is calculated by finite-difference time domain, revealing the regular sinusoidal propagation and absorption in multilayers. The multilayer films are coated on the surface of common clothing materials and tested using an infrared detector in the range of 400−6000 nm. The results prove that the quantum efficiency of infrared detection can be effectively reduced by CoGaZnSe multilayer films, especially for wool (83% in the range of 400−1800 nm and 86% in the range of 2000−6000 nm). Finally, a physical model is established to discover the mechanism of the antireflection and infrared effect and a theory of anti-infrared radiation. This research provides a new idea and method supporting the stealth technology and materials, which improves the efficiency of antiinfrared detection and makes it feasible to be applied in military, detection, and stealth technology.

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Investigation of terahertz waves propagating through far infrared/CO2 laser stealth-compatible coating based on one-dimensional photonic crystal

Cited by 20 publications

References 25 publications

Vibration and Terahertz Wave Absorption Characteristics of Graphene Material

Vibration and Terahertz Wave Absorption Characteristics of Graphene Material

Flexible Wearable Ti₃C₂T_x Composite Carbon Fabric Textile with Infrared Stealth and Electromagnetic Interference Shielding Effect

Invisibility Cloak Technology of Anti-Infrared Detection Materials Prepared Using CoGaZnSe Multilayer Nanofilms

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Investigation of terahertz waves propagating through far infrared/CO2 laser stealth-compatible coating based on one-dimensional photonic crystal

Cited by 20 publications

References 25 publications

Vibration and Terahertz Wave Absorption Characteristics of Graphene Material

Vibration and Terahertz Wave Absorption Characteristics of Graphene Material

Flexible Wearable Ti3C2Tx Composite Carbon Fabric Textile with Infrared Stealth and Electromagnetic Interference Shielding Effect

Invisibility Cloak Technology of Anti-Infrared Detection Materials Prepared Using CoGaZnSe Multilayer Nanofilms

Contact Info

Product

Resources

About

Flexible Wearable Ti₃C₂T_x Composite Carbon Fabric Textile with Infrared Stealth and Electromagnetic Interference Shielding Effect