基于3D打印及纺织面料基体的人工电磁材料研究

发布时间：2018-07-09 11:53

本文选题：人工电磁材料 + 3D打印　；参考：《武汉纺织大学》2017年硕士论文

【摘要】：人工电磁材料(超材料)作为一种新型材料自二十世纪末期开始被研究人员重点关注,该材料利用人工设计的特殊周期结构显现出一些奇异的电磁特性,这些特性主要有逆契仑可夫效应、逆多普勒效应和逆斯涅耳折射现象。并且,这些奇异特性使人们对人工电磁材料的未来发展愿景有了很大期待。在无线电波中有一个有限频带那就是微波,频率值为300MHz至300GHz之间,波长位于1mm至1m之间。微波本身属于电磁波的一类,因此波粒二象性也是它的特性之一。微波的性质一般表现出来的现象是吸收、反射和穿透。微波能够穿越的器皿有瓷器、塑料和玻璃。而能够将微波反射出来的材料通常是金属类。3D打印是“第三次工业革命”的核心技术,是快速成型技术的一种。而纺织面料以其经济性、多样性和易弯曲的特点也被广泛应用。本文基于人工电磁材料、3D打印技术和纺织面料的各自优点,对由3D打印骨架及纺织面料基体的人工电磁材料进行了研究。本文主要的内容为:1)综合叙述国内外人工电磁材料的研究进展,阐述了人工电磁材料的原理和应用。2)详细论述了人工电磁材料的设计及制备方法。3)基于3D打印技术,设计制备了一种“镂空正方体”人工电磁材料结构,在不同的波段能实现透射增强和产生强电磁谐振;设计了一种三维微波非对称传输超材料结构,研究了其在微波段的电磁传输特性,研究表明电磁波在该材料中传输时能实现“左-右旋”极化旋转。4)基于纺织面料及吸波原理设计了一种超材料吸波器,该结构在7.63GHz处,对电磁波的吸收率达到98.70%,并对其结构进行了优化。
[Abstract]:As a new type of material, artificial electromagnetic material (metamaterial) has been paid more and more attention by researchers since the end of the 20th century. These characteristics mainly include inverse Cherenkov effect, inverse Doppler effect and inverse Snell refraction phenomenon. Moreover, these strange characteristics make people have great expectations for the future development of artificial electromagnetic materials. There is a limited frequency band in the radio wave, which is microwave. The frequency is between 300MHz and 300GHz, and the wavelength is between 1mm and 1m. Microwave is a kind of electromagnetic wave, so the wave-particle duality is one of its characteristics. The properties of microwave generally show the phenomenon of absorption, reflection and penetration. The vessels through which microwaves can travel are porcelain, plastic and glass. The material that can reflect microwave is usually metal. 3D printing is the core technology of the "third Industrial Revolution" and a kind of rapid prototyping technology. Textile fabrics are widely used because of their economy, diversity and easy bending. Based on the advantages of 3D printing technology and textile fabrics, the artificial electromagnetic materials based on 3D printing framework and textile fabric matrix are studied in this paper. The main contents of this paper are: (1) the research progress of artificial electromagnetic materials at home and abroad is described, and the principle and application of artificial electromagnetic materials are expounded. (2) the design and preparation of artificial electromagnetic materials are discussed in detail. 3) based on 3D printing technology, the design and preparation of artificial electromagnetic materials are discussed in detail. A kind of artificial electromagnetic material structure of "hollowed-out cube" is designed and fabricated, which can realize transmission enhancement and strong electromagnetic resonance in different wave bands, and a three-dimensional microwave asymmetric transmission supermaterial structure is designed. The characteristics of electromagnetic transmission in the microwave band are studied. The results show that the electromagnetic wave can be rotated "left-right" when it is transmitted in the material. Based on the principle of textile fabric and absorbing wave, a kind of supermaterial absorber is designed. The structure is at 7.63 GHz. The absorptivity of electromagnetic wave is 98.70 and its structure is optimized.
【学位授予单位】：武汉纺织大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB34

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