ELECTROMAGNETIC MESOSCOPIC MODEL IN CONTINUOUS MEDIA

点击翻译按钮获取中文摘要

From 1995 to 1998, we studied on mesoscopic phenomena from view point of experimental and numerical aspect and considered its engineering application. Results are summarized as follows,(1) FLR (finite Larmor radius) - MHD (magnetohydrodynamics) model and gyro-fluid model are applied to understand the mechanism of the Landau damping and resonance between electromagnetic waves and particles in mesoscopic plasmas. In addition, super particle models are used to simulate an ion-electron two - stream instability with a parallel computer and MHD models are applied to study on a stability for tokamak plasmas with the negative shear.(2) We solved the Landau - Lifshitz - Gilbert equation for micromagnetics and presented hysteresis models in electromagnetic computation. And also, we studied on spin - polarized STM and exchange force microscopy, and analyzed 3 - D magnetic shield problems by using new BEM method.(3) Phenomena exhibited by ballistic 2 - D electron gas in magnetic fields were simulated as motion of electron waves in quantum wires. Concept of quantum - mechanical computers was discussed from view point of quantum information, computation, and multiparticle states.(4) Mesoscopic constitutive modes in type - II superconductors were developed and studies numerically, so that they were used in design and analysis of space equipments and electro - magneto devices.(5) Propose of finite element beam propagation method for nonlinear optical waveguides, development of optical memories system, application of acoustic - optic interaction systems, and experiments on a change in optical spectrum by spatial coherence have been done.