Constructing Repairable Meta-Structures of Ultra-Broad-Band Electromagnetic Absorption from Three-Dimensional Printed Patterned Shells

2017 ◽  
Vol 9 (49) ◽  
pp. 43179-43187 ◽  
Author(s):  
Wei-Li Song ◽  
Zhili Zhou ◽  
Li-Chen Wang ◽  
Xiao-Dong Cheng ◽  
Mingji Chen ◽  
...  
Keyword(s):  
Broad Band ◽  
Three Dimensional ◽  
Electromagnetic Absorption

A self-assembly method for the fabrication of a three-dimensional (3D) polypyrrole (PPy)/poly(3,4-ethylenedioxythiophene) (PEDOT) hybrid composite with excellent absorption performance against electromagnetic pollution

2016 ◽  
Vol 4 (1) ◽  
pp. 82-88 ◽  
Author(s):  
Fan Wu ◽  
Mengxiao Sun ◽  
Wanchun Jiang ◽  
Kun Zhang ◽  
Aming Xie ◽  
...  
Keyword(s):  
Self Assembly ◽  
Hybrid Composite ◽  
Three Dimensional ◽  
Synthesis And Characterization ◽  
Assembly Method ◽  
Electromagnetic Absorption ◽  
Absorption Performance ◽  
Electromagnetic Pollution

Here we report the synthesis and characterization of a 3D-PPy/PEDOT composite, and examine its electromagnetic absorption (AE) performance.

scholarly journals Three-dimensional (3D) α-Fe2O3/polypyrrole (PPy) nanocomposite for effective electromagnetic absorption

AIP Advances ◽  
2016 ◽  
Vol 6 (6) ◽  
pp. 065021 ◽  
Author(s):  
Wanchun Jiang ◽  
Mengxiao Sun ◽  
Kun Zhang ◽  
Fan Wu ◽  
Aming Xie ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Electromagnetic Absorption

Using organic solvent absorption as a self-assembly method to synthesize three-dimensional (3D) reduced graphene oxide (RGO)/poly(3,4-ethylenedioxythiophene) (PEDOT) architecture and its electromagnetic absorption properties

RSC Advances ◽  
2014 ◽  
Vol 4 (91) ◽  
pp. 49780-49782 ◽  
Author(s):  
Fan Wu ◽  
Yuan Wang ◽  
Mingyang Wang
Keyword(s):  
Organic Solvent ◽  
Self Assembly ◽  
Three Dimensional ◽  
Absorption Properties ◽  
Self Assembling ◽  
Assembly Method ◽  
Electromagnetic Absorption ◽  
Solvent Absorption ◽  
Reduced Graphene ◽  
Promising Application

A novel self-assembling 3D-RGO/PEDOT architecture has been synthesized through organic solvent absorption and gentle heating. It gives a promising application in electromagnetic absorption.

Self-assembled ultralight three-dimensional polypyrrole aerogel for effective electromagnetic absorption

2015 ◽  
Vol 106 (22) ◽  
pp. 222902 ◽  
Author(s):  
Aming Xie ◽  
Fan Wu ◽  
Mengxiao Sun ◽  
Xiaoqing Dai ◽  
Zhuanghu Xu ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Electromagnetic Absorption ◽  
Self Assembled

A broad-band three-dimensional isotropic left-handed metamaterial

2009 ◽  
Vol 42 (15) ◽  
pp. 155413 ◽  
Author(s):  
Jia Fu Wang ◽  
Shao Bo Qu ◽  
Zhuo Xu ◽  
Zhen Tang Fu ◽  
Hua Ma ◽  
...  
Keyword(s):  
Broad Band ◽  
Three Dimensional ◽  
Left Handed

A sheath-core shaped ZrO2-SiC/SiO2 fiber felt with continuously distributed SiC for broad-band electromagnetic absorption

2021 ◽  
Vol 419 ◽  
pp. 129414
Author(s):  
Xin Li ◽  
Minghang Li ◽  
Xiaoke Lu ◽  
Wenjie Zhu ◽  
Hailong Xu ◽  
...  
Keyword(s):  
Broad Band ◽  
Electromagnetic Absorption

scholarly journals Dependence of Enstrophy Transport and Mixed Mass on Dimensionality and Initial Conditions in the Richtmyer–Meshkov Instability Induced Flows1

2020 ◽  
Vol 142 (12) ◽  
Author(s):  
Ye Zhou ◽  
Michael Groom ◽  
Ben Thornber
Keyword(s):  
Inertial Confinement Fusion ◽  
Initial Conditions ◽  
Broad Band ◽  
Initial Perturbation ◽  
Density Ratio ◽  
Three Dimensional ◽  
Two Dimensions ◽  
Three Dimensions ◽  
Late Time ◽  
Production Term

Abstract This paper presents a comparative study of the enstrophy budget and mixed mass between two- and three-dimensional flows induced by Richtmyer–Meshkov instability (RMI). Specifically, the individual contributions to the enstrophy budget due to the production from baroclinicity and from vortex stretching (which vanishes in two-dimensional (2D) flow) are delineated. This is enabled by a set of two- and three-dimensional computations at Atwood 0.5 having both narrow- and broad-band perturbations. A further three-dimensional (3D) computation is conducted at Atwood 0.9 using an identical narrowband perturbation to the Atwood 0.5 case to examine the sensitivity to density ratio. The mixed mass is also considered with the goal to obtain insight on how faithfully a simplified calculation performed in two dimensions can capture the mixed mass for an inertial confinement fusion (ICF) or other practical application. It is shown that the late time power law decay of variable density enstrophy is substantially different in two and three dimensions for the narrowband initial perturbation. The baroclinic production term is negligible in three dimensions (aside from the initial shock interaction), as vortex stretching is larger by two orders of magnitude. The lack of vortex stretching considerably reduces the decay rate in both narrowband and broadband perturbations in two dimensions. In terms of mixed mass, the lack of vortex stretching reduces the mixed mass in two dimensions compared to three in all cases. In the broadband cases, the spectral bandwidth in the 2D case is wider; hence, there is a longer time period of sustained linear growth which reduces the normalized mixed mass further.

scholarly journals The Ultra-low Frequency and Broad Band Gaps Characteristics of Multilayer Composite Cylindrical Three-dimensional pentamode metamaterials

2021 ◽  
Author(s):  
Chengxin Cai ◽  
Xue Wang ◽  
Qifu Wang ◽  
Mingxing Li ◽  
Guangchen He ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Broad Band ◽  
Three Dimensional ◽  
Engineering Application ◽  
Low Frequency ◽  
Single Mode ◽  
Band Gaps ◽  
Multilayer Composite ◽  
Lattice Constants ◽  
Mode Area

Abstract For three-dimensional pentamode metamaterials, it is of great significance to realize underwater ultra-low frequency acoustic wave control. Therefore, two types multilayer composite cylindrical three-dimensional pentamode metamaterials with ultra-low frequency and broad band gaps are proposed in this paper. By using pentamode metamaterials with lattice constants on the order of centimeters, the phononic band gaps below 60 Hz and the single-mode area below 30Hz can be obtained. Compared with asymmetrical double-cone locally resonant pentamode metamaterials, the lower edge frequency, relative bandwidth and figure of merit of the first phononic band gap can be reduced by up to 61.4%, 10.3% and 40.6%, respectively. It will provide reference and guidance for the engineering application of pentamode metamaterials in controlling the ultra-low frequency broadband acoustic waves, vibration and noise reduction.

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