Japan Long-Term Visit: Finite Difference Time Domain Analysis of Electromagnetics Interactions with Special Materials and Geometries

该奖项将支持长期的研究访问， Raymond J. Luebbers教授，电气系 工程，宾夕法尼亚州立大学，大学公园， 到日本与教授进行合作研究项目 东北大学电磁学实验室阿达奇三郎 仙台大学。 研究人员将试图 扩展Finite的应用程序和分析功能 时域差分（FDTD）方法应用于问题 在电磁学中。 时域有限差分法涉及划分一个 将计算空间转化为小单元。 材料占用 可以独立地指定每个单元。 模拟 电磁源场传播通过 在小的时间步长中计算空间。 电场和 在每个时间步长计算每个单元中的磁场。 其他量，包括电压、电流、指向 矢量和能量密度可用于每个单元格， 每一步时间。 重点领域将包括 FDTD天线建模能力的发展，评估 保护人员和电子设备的方法的有效性 设备从电磁波，改进方法， 分析分散的电磁材料， 等离子体，并开发改进的建模方法， 预测电磁场的生物效应。 东北大学电磁学研究室 最受认可和最负盛名的电磁炉之一， 日本的研究机构。 阿达奇教授是 国际公认的电磁学领导者 research. 吕伯斯教授一直积极参与 该地区，并作出了贡献的FDTD建模的发展 色散介质。 这些改进的FDTD的应用 方法包括天线，雷达散射，电磁 电介质和磁性材料的性能，电磁， 电磁屏蔽，微波电路，光纤， 生物效应。 因为有学术协议 宾夕法尼亚州立大学与东北大学的交流 大学，据信， 研究人员将继续超越这一终止 正式协议。

This award will support a long-term research visit by Professor Raymond J. Luebbers, Department of Electrical Engineering, Pennsylvania State University, University Park, to Japan for a cooperative research project with Professor Saburo Adachi, Laboratory of Electromagnetics at Tohoku University, at Sendai. The researchers will attempt to extend the applications and analysis capabilities of Finite Difference Time Domain (FDTD) methods as applied to problems in electromagnetics. The FDTD method involves dividing a computational space into small cells. The material occupying each cell may be specified independently. The simulated electromagnetic source field is propagated through the computational space in small time steps. The electric and magnetic fields in each cell are computed at each time step. Other quantities, including voltage, current, Pointing vector, and energy density are available for each cell at each time step. The areas of concentration will include development of an FDTD antenna modeling capability, assessing effectiveness of methods used to shield persons and electronic equipment from electromagnetic waves, improving methods for analyzing dispersive electric and magnetic materials such as plasmas, and developing improved methods for modeling and predicting biological effects of electromagnetic fields. The Laboratory of Electromagnetics at Tohoku University is one of the most highly recognized and prestigious electromag- netics research institutions in Japan. Professor Adachi is internationally recognized as a leader in electromagnetics research. Professor Luebbers has been heavily involved in the area and contributed to the development of FDTD modeling of dispersive media. Applications for these improved FDTD methods include antennas, radar scattering, electromagnetic performance of dielectric and magnetic materials, electromag- netic shielding, microwave circuits, fiber optics, and biological effects. Since there is an agreement of Academic Exchange between the Pennsylvania State University and Tohoku University, it is believed that collaboration between the researchers will continue beyond the termination of this formal agreement.