Dielectric Response of Graded Spherical Composites
LI Zhi1, WEI En-Bo2, ZHANG Han-De3, TIAN Ji-Wei1
1Physical Oceanography Laboratory, Ocean University of China, Qingdao 266003
2Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071
3Detachment of aerial monitoring for Ocean, State Oceanic Administration, Qingdao 266003
Dielectric Response of Graded Spherical Composites
LI Zhi1;WEI En-Bo2;ZHANG Han-De3;TIAN Ji-Wei1
1Physical Oceanography Laboratory, Ocean University of China, Qingdao 266003
2Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071
3Detachment of aerial monitoring for Ocean, State Oceanic Administration, Qingdao 266003
Abstract： We investigate the effective dielectric responses of graded spherical composites under an external uniform electric field by taking the dielectric function of spherical inclusion, εi=crk eβr, where r is the inner distance of a point inside the particle from the centre of the spherical particle in the coordination. In the dilute limit, our exact result is used to test the validity of differential effective dipole approximation (DEDA) for estimating the effective response of graded spherical composites and it is shown that the DEDA is in excellent agreement with the exact result.
2005, Vol. 22 
