Modelling Solid-State Sources of GHz-THz Electromagnetic Radiation

发展新型固态GHz-THz电磁辐射源是当前的研究热点，具有潜在的通信和医学应用前景。最近的研究表明，由于石墨烯的高电子迁移率和器件结构的可配置性，基于石墨烯的材料特别有前途。为了开发新的器件，重要的是要了解这些高频源之间的耦合，不仅是彼此之间的耦合，而且是与它们所处环境的耦合。乔治·格林电磁研究所和数学科学学院已经开发了在任意环境中由复杂源产生的场的传播的新模型。这些方法是非常通用的，包括全波计算工具，以及使用精确边界积分方程组的形式。学生将使用这些工具的选择来研究固态高频源的辐射模式，并优化它们在空间和时间上的可配置性。近场对远场辐射的影响将通过观察与光源的耦合来研究，在石墨烯的情况下，则是等离子体激发。该项目将让学生参与一个大型的跨学科合作，将电子和电磁工程与诺丁汉数学科学和物理的理论和实验研究人员以及拉夫堡大学的物理学家联系起来。

The development of new solid-state sources of GHz-THz electromagnetic radiation is of current interest with potential applications in communications and medicine. It hasrecently been shown that graphene-based materials are particularly promising due to the high electron mobility and configurability of the device structures. To develop newdevices, it is important to understand the coupling of such high frequency sources not only with each other but also with their environment. The George Green Institute forElectromagnetics Research and the School of Mathematical Sciences have developed new models for the propagation of fields generated by complex sources in arbitraryenvironments. These methods are very general, and include full wave computation tools, as well as formalisms using exact boundary integral equations. The student will use aselection of these tools to study the radiation pattern of solid-state high frequency sources, and optimise their configurability in space and time. Near-field effects on thefar-field radiation will be studied by looking at coupling to the source, and, in the case of graphene, plasmonic excitation. The project will involve the student working in a large cross-disciplinary collaboration that links Electronic and Electromagnetic Engineering with theoretical and experimental researchers from Mathematical Sciences and Physics at Nottingham and Physicists at Loughborough University.