The Simulation Design of Microwave Absorption Performance for the Multi-Layered Carbon-Based Nanocomposites Using Intelligent Optimization Algorithm

Abstract

The optimal design objectives of the microwave absorbing (MA) materials are high absorption, wide bandwidth, light weight and thin thickness. However, it is difficult for single-layer MA materials to meet all of these requirements. Constructing multi-layer structure absorbing coating is an important means to improve performance of MA materials. The carbon-based nanocomposites are excellent MA materials. In this paper, genetic algorithm (GA) and artificial bee colony algorithm (ABC) are used to optimize the design of multi-layer materials. We selected ten kinds of materials to construct the multi-layer absorbing material and optimize the performance. Two algorithms were applied to optimize the two-layer MA material with a total thickness of 3 mm, and it was found that the optimal bandwidth was 8.12 GHz and reflectivity was −53.4 dB. When three layers of MA material with the same thickness are optimized, the ultra-wide bandwidth was 10.6 GHz and ultra-high reflectivity was −84.86 dB. The bandwidth and reflectivity of the optimized material are better than the single-layer material without optimization. Comparing the GA and the ABC algorithm, the ABC algorithm can obtain the optimal solution in the shortest time and highest efficiency. At present, no such results have been reported.

Functional Nanomaterials from Waste and Low‐Value Natural Products: A Technological Approach Level

“…[138,139] This set of processes often requires the application of more complex equipment, as compared to the thermochemical methods. [140,141] To date, many types of plasma systems have been designed such as, e.g., DC discharge-based platforms, [142][143][144] microwave systems, [145][146][147] inductively coupled plasma (ICP), [148][149][150] and capacitively coupled plasma (CCP) [151,152] systems, radio-frequency (RF) and magnetrons, [153][154][155][156] and many others. [157][158][159][160] Figure 9.…”

Construction of multilayer carbon magnetic heterostructures on the surface of carbon fibers to improve the absorption performance

“…To increase the EMW absorption capacity of absorbing materials, additional polarization relaxation techniques are essential. At present, multilayer absorbing structures have been confirmed to have stronger absorbing performance than single layers 13–16 . For instance, Xu 17 synthesized organic–inorganic nano‐CoFe 2 O 4 /PANI/shell composites through the chemical oxidation polymerization of aniline.…”

“…At present, multilayer absorbing structures have been confirmed to have stronger absorbing performance than single layers. [13][14][15][16] For instance, Xu 17 synthesized organicinorganic nano-CoFe 2 O 4 /PANI/shell composites through the chemical oxidation polymerization of aniline. The findings suggest that the single-layer CoFe 2 O 4 /PANI composite shows a minimum RL of À23.6 dB at a frequency of 13.1 GHz while maintaining a thickness of 2.5 mm.…”

Structure Design, Surface Modification, and Application of CNT Microwave‐Absorbing Composites

“…[51][52][53][54][55][56][57] Stealth aircraft are able to maintain high maneuverability by being armed and continuously flying at high speeds and altitudes without being detected by enemy sensors. [58] Stealth is one of the most crucial elements in tactical planning. [59][60][61] Typical characteristics of an ideal microwave-absorbing material should be strong EM absorption, broad absorption bands, thin thickness, lightness, and stable chemical properties.…”

“…[59][60][61] Typical characteristics of an ideal microwave-absorbing material should be strong EM absorption, broad absorption bands, thin thickness, lightness, and stable chemical properties. [34,58,[62][63][64][65][66][67][68][69][70][71][72][73][74][75][76] There must be two conditions for the high performance of the absorbing material: 1) To reduce the direct reflection of the EMW on the material surface and increase the transmission strength, it is necessary to fully account for the EM impedance matching properties in the design of the material. [77,78] 2) Once the EMW enters the material, the loss properties of the material have to be taken into account in order to achieve maximum attenuation and loss.…”