3D Flake‐Like Bi<sub>2</sub>Te<sub>3</sub> with Outstanding Lightweight Electromagnetic Wave Absorption Feature

Chen, Jiabin; Liang, Xiaohui; Quan, Bin; Yang, Zhihong; Du, Youwei; Ji, Guangbin

doi:10.1002/ppsc.201700468

Cited by 25 publications

(8 citation statements)

References 37 publications

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“…In addition, favorable impedance matching plays a significant role in efficient microwave absorption. The impedance matching property can be described as follows: Where Z in , Z 0 , μ r , and ε r represent the input impedance value of the absorber, impedance value of free space, complex permeability, and complex permittivity, respectively. The value of Z should be close to 1 (zero reflection between air and the surface of the microwave absorber) to obtain optimum impedance matching .…”

Section: Results and Discussionmentioning

confidence: 99%

Multifunctional Bulk Hybrid Foam for Infrared Stealth, Thermal Insulation, and Microwave Absorption

Tan

Chen

et al. 2020

ACS Appl. Mater. Interfaces

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235

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Taking serious microwave pollution issues and the complex application environment into consideration, it is quite urgent to integrate several functions into one material. Electromagnetic (EM) absorbing materials with multiple functions are highly attractive to next-generation wireless techniques and portable electronic devices. Herein, melamine foam provides a decent platform for the uniform growth of Co-based metal− organic frameworks (MOFs), which bring the as-obtained hybrid foam with threedimensional porous network structure and combination of dielectric along with magnetic attenuation abilities as advanced materials in multifunctional fields. Remarkably, the relevant microwave absorption (MA) performance of the hybrid foam can reach an extremely high reflection loss value of −59.82 dB. Furthermore, the hybrid foam exhibits excellent infrared stealth and optimiztic heat insulation function, demonstrating the potential in plenty of practical applications. These results may arouse interests and inspirations of the elaborately design and facilely synthesis of highperformance foamlike microwave absorbers with multiple functions.

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Section: Results and Discussionmentioning

confidence: 99%

Multifunctional Bulk Hybrid Foam for Infrared Stealth, Thermal Insulation, and Microwave Absorption

Tan

Chen

et al. 2020

ACS Appl. Mater. Interfaces

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235

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“…The Bridgeman technique was used to grow single crystals of Bi 2−x Sn x Te 3 (0 x 0.0075) and Bi 2 Se 3 [29,[31][32][33] from polycrystalline materials. The starting polycrystalline materials, which were synthesized in quartz ampoules from elements with 5N purity, had the stoichiometric formulas.…”

Section: Methodsmentioning

confidence: 99%

Evolution to an anisotropic band structure caused by Sn doping in Bi_1.995Sn_0.005Te₃ single crystals

Salawu

Sasaki

Kulbachinskii

et al. 2020

J. Phys.: Condens. Matter

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Magnetotransport studies have established the existence of exotic electronic properties in materials of technological and fundamental interest. However, measurements of the Shubnikov–de Haas oscillations, intended to reveal information about Fermi surfaces (FSs), have mostly been carried out in magnetic fields perpendicular to the applied currents. Here, using magnetic fields not only perpendicular but also parallel to the applied currents in a given contact configuration, we investigated the anisotropic magnetotransport and the anisotropic FS properties of Bi2−x Sn x Te3 (0 ⩽ x ⩽ 0.0075) and Bi2Se3. While the magnetotransport properties of Bi2Te3 and Bi2Se3 were nearly isotropic, Bi1.995Sn0.005Te3 exhibited quite anisotropic features. These observations are attributed to the nonparabolicity of the associated bands, which evolved to more anisotropic band structures with Sn concentration. This sensitivity of the band anisotropy was rather unexpected because only a small number of dopants are known to increase disorder levels in the degenerate region. Our approach, using two different magnetic field directions in the measurements of the Shubnikov–de Haas oscillations, is a simple and easily adoptable method for shedding more light on the FSs of functional materials.

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“…[11][12][13] The second-generation material of BiSb alloy is widely reported as three-dimensional (3D) topological insulator, [14][15][16] and the third generation is based on compounds such as Bi 2 Te 3 . [17][18][19][20][21][22] There are many researches on Bi 2 Te 3 materials, including the fabrication processing and preparation, [23,24] thermoelectric responses, [25][26][27] microwave absorption characteristics, [28,29] energy band properties, [17,30,31] and plasmonics in visible/UV range. [32,33] Some advances on applications of this kind of topological insulator plasmons in the optics and optoelectronics, such as modulation, [34] light harvesting, [35] optical sensing, [36] and photoluminescence [37] have also been studied.…”

Section: Introductionmentioning

confidence: 99%

Near‐Field Plasmons Imaging and Energy Analysis on Bi₂Te₃ Film

Yan

Qiao

et al. 2022

Annalen der Physik

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Topological materials have great potential in lossless electronic transportation. Bi 2 Te 3 as three-dimensional (3D) topological insulator is predicted to exhibit many amazing electromagnetic characteristics, which are widely studied all over the world. However, current research available on Bi 2 Te 3 materials is not adequate, and a comprehensive understanding of its properties is necessary. In this work, near-field plasmon imaging based on Bi 2 Te 3 nanostructures and the kinetic energy spectra of emitted electrons from Bi 2 Te 3 film by using photoemission electron microscope instruments is studied. Under UV laser excitation of 273 nm, the electrons can be excited from the trap states in bandgap, which provides a feasible idea for observing the trap energy levels of Bi 2 Te 3 materials. Moreover, the imaging applications of nanostructures in Bi 2 Te 3 film based on their polarization-dependence and wavelength-dependence properties are also demonstrated, providing a more degrees of freedom for imaging, and can realize multidimensional and multi-multiplexing imaging technology of topological materials. This work provides a novel method to enrich the Bi 2 Te 3 film properties from the view of near-field plasmon imaging and kinetic energy distribution, paving the way for realizing practical applications of topological materials.

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3D Flake‐Like Bi₂Te₃ with Outstanding Lightweight Electromagnetic Wave Absorption Feature

Cited by 25 publications

References 37 publications

Multifunctional Bulk Hybrid Foam for Infrared Stealth, Thermal Insulation, and Microwave Absorption

Multifunctional Bulk Hybrid Foam for Infrared Stealth, Thermal Insulation, and Microwave Absorption

Evolution to an anisotropic band structure caused by Sn doping in Bi_1.995Sn_0.005Te₃ single crystals

Near‐Field Plasmons Imaging and Energy Analysis on Bi₂Te₃ Film

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3D Flake‐Like Bi2Te3 with Outstanding Lightweight Electromagnetic Wave Absorption Feature

Cited by 25 publications

References 37 publications

Multifunctional Bulk Hybrid Foam for Infrared Stealth, Thermal Insulation, and Microwave Absorption

Multifunctional Bulk Hybrid Foam for Infrared Stealth, Thermal Insulation, and Microwave Absorption

Evolution to an anisotropic band structure caused by Sn doping in Bi1.995Sn0.005Te3 single crystals

Near‐Field Plasmons Imaging and Energy Analysis on Bi2Te3 Film

Contact Info

Product

Resources

About

3D Flake‐Like Bi₂Te₃ with Outstanding Lightweight Electromagnetic Wave Absorption Feature

Evolution to an anisotropic band structure caused by Sn doping in Bi_1.995Sn_0.005Te₃ single crystals

Near‐Field Plasmons Imaging and Energy Analysis on Bi₂Te₃ Film