Nonlinear alternating current responses of graded materials
| dc.creator | Huang, J. P. | |
| dc.creator | Gao, L. | |
| dc.creator | Yu, K. W. | |
| dc.creator | Gu, G. Q. | |
| dc.date | 2003-10-24 | |
| dc.date.accessioned | 2026-07-25T22:52:50Z | |
| dc.description | When a composite of nonlinear particles suspended in a host medium is subjected to a sinusoidal electric field, the electrical response in the composite will generally consist of alternating current (AC) fields at frequencies of higher-order harmonics. The situation becomes more interesting when the suspended particles are graded, with a spatial variation in the dielectric properties. The local electric field inside the graded particles can be calculated by the differential effective dipole approximation, which agrees very well with a first-principles approach. In this work, a nonlinear differential effective dipole approximation and a perturbation expansion method have been employed to investigate the effect of gradation on the nonlinear AC responses of these composites. The results showed that the fundamental and third-harmonic AC responses are sensitive to the dielectric-constant and/or nonlinear-susceptibility gradation profiles within the particles. Thus, by measuring the AC responses of the graded composites, it is possible to perform a real-time monitoring of the fabrication process of the gradation profiles within the graded particles. | |
| dc.description | 18 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0310593 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0310593 | |
| dc.identifier | Phys. Rev. E 69, 036605 (2004) | |
| dc.identifier | doi:10.1103/PhysRevE.69.036605 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/93391 | |
| dc.subject | Soft Condensed Matter | |
| dc.subject | Materials Science | |
| dc.title | Nonlinear alternating current responses of graded materials | |
| dc.type | text |