采用准静电模型仿真了两相异质材料的等效介电常数和局域场分布,结果表明,对于介质一介质型异质材料,三维模型等效介电常数仿真值与Bruggeman公式相符,并位于Hashin-Shtrikman上下界之间;异质材料内两相介电常数差异越大,其内局域场越强.对于由导电相和介质相构成的异质材料,仿真结果表明,异质材料内的电场分布受导电相填充比、形状和电导率等因素的影响;导电相导电性越好,其局域场增强现象越明显.
Effective permittivity and inner electric field distribution of the two-phase heterogeneous medium are simulated based on quasi-static models.It shows that for the dielectric-dielectric mixture,the simulation results of the three-dimensional model are in good agreement with the Bruggeman formula and fall always between Hashin-Shtrikman limits.The larger the permittivity contrasts between the two dielectric phases,the greater the local electric field intensity.For the conductor-dielectric mixture,simulation results show that local electric field enhancement phenomenon is governed by a combination of factors such as volume ratio,shape and electric conductivity of the inclusion,and the larger the electrical conductivity,the stronger the local electric filed intensity.
参考文献
| [1] | 谢处方;饶克勤.电磁场与电磁波[M].北京:高等教育出版社,2006 |
| [2] | Debye P .Einige resultate einer kinetischen theorie der isolatoren[J].Physics Z,1912,3:97. |
| [3] | 南策文.非均质材料物理--显微结构-性能关联[M].北京:科学出版社,2005 |
| [4] | 黄铭 .微波与颗粒物质相互作用的机理及应用研究[D].昆明:昆明理工大学,2006. |
| [5] | Huang M;Peng JH;Yang JJ;Wang JQ .A new equation for the description of dielectric losses under microwave irradiation[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,2006(10):2255-2258. |
| [6] | 肖哲,黄铭,巫跃凤,彭金辉.三维RC网络仿真异质材料的通用介质响应[J].物理学报,2008(02):957-961. |
| [7] | Huang M;Yang J J;Xiao Z.Modelling the dielectric response in heterogeneous materials using 3D RC networks[J].Modern Physics Letters B,2009 |
| [8] | Jin-hui PENG,Jing-jing YANG,Ming HUANG,Jun SUN,Zhong-yuan WU.Simulation and analysis of the effective permittivity for two-phase composite medium[J].中国高等学校学术文摘·材料科学,2009(01):38-43. |
| [9] | Yang J J;Huang M;Wu Z Y.Microwave absorbing properties and electric field distribution of conductor-dielectric compound[A].云南昆明,2008:673. |
| [10] | 杨晶晶,黄铭,何伟刚,宗容,彭金辉.金属-介质壳核结构复合材料吸波特性的仿真和分析[J].材料导报,2009(12):71-74. |
| [11] | Huang, M;Yang, JJ;Sun, J;Shi, JH;Peng, JH .Modelling and Analysis of Omega-shaped Double Negative Material-assisted Microwave Sensor[J].Journal of Infrared, Millimeter and Terahertz Waves,2009(11):1131-1138. |
| [12] | Sun J;Huang M;Yang J J.A novel microwave sensor based on rectangular waveguide filled with a DNG material[A].云南昆明,2008:658. |
| [13] | 杨晶晶,黄铭,吴中元,宗容,彭金辉.亚波长银粒子/孔的光谐振特性[J].光学学报,2009(05):1379-1383. |
| [14] | Yang J J;Huang M;Yu J et al.Study of the optical transmission enhancement properties in a one-dimensioual Ag film with different single slit groove structures[J].Optoelectronics Letters,2008,4(06):464. |
| [15] | 金钦汉.微波化学的发展与展望[A].湖北,2005 |
| [16] | David A .Microwave chemistry:Out of the kitchen[J].Nature,2003,421:571. |
| [17] | Horikoshia S;Serponeb N .Photochemistry with microwaves catalysts and environmental applications[J].Journal of Photochemistry and Photobiology C:Photochemistry Reviews,2009,10:96. |
| [18] | Lekse J W;Stagger T J;Aitken J A .Microwave metallurgy:synthesis of intermetallie compounds via microwave irradiation[J].Chemistry of Materials,2007,19:3601. |
| [19] | Cheng YH;Chen XL;Wu K;Wu SN;Chen Y;Meng YM .Modeling and simulation for effective permittivity of two-phase disordered composites[J].Journal of Applied Physics,2008(3):34111-1-34111-8-0. |
| [20] | Karkkainen KK.;Nikoskinen KI.;Sihvola AH. .Effective permittivity of mixtures: Numerical validation by the FDTD method[J].IEEE Transactions on Geoscience and Remote Sensing,2000(3):1303-1308. |
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