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Titolo: Calculation of the effective dielectric function of composites with periodic geometry
Autore: Zhang, CX; Yang, BF; Wu, XH; Lu, TQ; Zheng, YS; Su, WH;
 Indirizzi:
 Jilin Univ, Dept Phys, Grp Solid State Phys, Changchun 130023, Peoples R China Jilin Univ Changchun Peoples R China 130023 chun 130023, Peoples R China Jilin Univ, Ctr Theoret Phys, Changchun 130023, Peoples R China Jilin Univ Changchun Peoples R China 130023 chun 130023, Peoples R China Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China Wuhan Univ Wuhan Peoples R China 430072 s, Wuhan 430072, Peoples R China Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China Acad Sinica Shenyang Peoples R China 110015 yang 110015, Peoples R China Chinese Ctr Adv Sci & Technol, World Lab, Ctr Condensed Matter & Radiat Phys, Beijing 100080, Peoples R China Chinese Ctr Adv Sci & Technol BeijingPeoples R China 100080 les R China
 Titolo Testata:
 PHYSICA B
fascicolo: 12,
volume: 293,
anno: 2000,
pagine: 16  32
 SICI:
 09214526(200012)293:12<16:COTEDF>2.0.ZU;2X
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 NONLINEAR SUSCEPTIBILITY; 2COMPONENT COMPOSITE; TRANSPORTPROPERTIES; CONSTANT; BOUNDS; CONDUCTIVITY; SPHERES; MEDIA;
 Keywords:
 dielectric function; composites; periodic geometry; Fourier expansion;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Physical, Chemical & Earth Sciences
 Citazioni:
 24
 Recensione:
 Indirizzi per estratti:
 Indirizzo: Zhang, CX Jilin Univ, Dept Phys, Grp Solid State Phys, Changchun 130023, Peoples R China Jilin Univ Changchun Peoples R China 130023 3, Peoples R China



 Citazione:
 C.X. Zhang et al., "Calculation of the effective dielectric function of composites with periodic geometry", PHYSICA B, 293(12), 2000, pp. 1632
Abstract
A method for calculating the effective dielectric function of a twocomponent periodic composite is described. Using a simple Fourier expansion technique, we obtain an explicit power series expression of H(t), which is one of the characteristic geometric functions of the twocomponent composite proposed by Bergman. The relation between the series of H(t) and that of another characteristic geometric function of composite F(s) is studied. The dielectric function of composite F, Of two kinds of model systems is calculatedby using both H(t) and F(s) for finitesize reciprocal lattice. The deviations of the numerical results of epsilon (e) from the exact ones, which arecaused by the limited size of the reciprocal lattice used, are investigated. It is found that the: accuracies of the numerical results of F(s) differfrom those of H(t). For simple cubic arrays of nonoverlapping spheres, theresults of epsilon (e), obtained from H(t) are closer to the exact ones, especially when the volume fraction of the inclusions is larger and the dielectric contrast of the composite is higher. For 2D prisms, the averages ofthe results of epsilon (e) obtained from using F(s) and those from H(t) are closer to the exact ones. (C) 2000 Elsevier Science B.V. All rights reserved.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/05/20 alle ore 15:21:24