%0 Journal Article
%T Effective AC response of nonlinear metal/dielectric granular composites<br>金属/电介质颗粒复合介质的非线性交流响应
%A Wu Ya-Min
%A Chen Guo-Qing
%A <br>吴亚敏
%A 陈国庆
%J 物理学报
%D 2006
%I 
%X T-matrix approach is generalized to study the AC response of nonlinear metal/dielectric granular composites. We have derived general expressions for effective AC response at the fundamental frequency co and the third harmonic 3 co and the fifth harmonic 5 co. When the components possess real dielectric response, our theoretical work reduces to the one with perturbative method. We take one step forward to perform numerical calculations on the metal/dielectric composites, and the results show that the effective third-order and fifth-order nonlinear susceptibility for fundamental and third-harmonic and fifth-harmonic frequencies can achieve large enhancement near the surface plasmon resonant frequency. Moreover, the resonant frequency exhibits a redshift with increasing volume fraction of the nonlinear component. In addition, the effect of dimensionality on the effective nonlinear responses is studied.
%K T-matrix approach
%K composite media
%K nonlinear AC response<br>T矩阵方法
%K 复合介质
%K 非线性交流响应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=966E03A47DD88E00&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=F3090AE9B60B7ED1&sid=91EF98956C9EC2EF&eid=468E14A711451368&journal_id=1000-3290&journal_name=物理学报&referenced_num=1&reference_num=19