Metamaterials for subwavelength imaging at microwave, terahertz, infrared and optical frequencies

用于微波、太赫兹、红外和光频率亚波长成像的超材料

• 批准号: EP/E053025/1
• 负责人: Pavel Belov
• 金额: $ 60.57万
• 依托单位: Queen Mary University of London
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2007
• 资助国家: 英国
• 起止时间: 2007 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FE053025%2F1
• 关键词: Metamaterials; subwavelength; imaging; microwave; terahertz

Recently, a paper by Sir John Pendry about the possibility of creating perfect lenses with nearly unrestricted sub-wavelength resolution by the use of the left-handed media (materials with both negative permittivity and permeability) initiated a boom in studies of the artificial media with the exotic and unusual electromagnetic properties. It is likely that this was the birth of a new area of modern physics, which is now named metamaterials. The development of this new branch of research in the multidisciplinary field of material physics, electromagnetics, optics, radio engineering, and electronics concerns artificial electromagnetic multi-functional materials engineered to satisfy the prescribed electromagnetic requirements. Superior properties as compared to what can be found in nature are often underlying in the term 'metamaterials'. Electromagnetic metamaterials will play a key role in providing new functionalities and enhancements to the future electronic devices and components, such as high-speed circuits, multifunctional smart miniature antennas and apertures, high-resolution imaging systems, smart skins, and so forth. After all, these and other systems are built on substrates and superstrates whose electromagnetic response functions define the design and performance of the systems. Metamaterials are, in essence, the materials of the future, since the main purpose for their study is to be able to go beyond where naturally occurring substances and current materials research have taken us. By combining different microscopic elements into large-scale designs, one will be able not only to create materials with fundamentally new properties but also to fabricate others that have properties on demand, as required by new technologies. In particular, new electromagnetic properties will allow one to control microwaves, millimetre waves, and optical light in revolutionary ways. This is the context in which the present proposal is framed. It covers the topic of sub-wavelength imaging using metamaterials which can find multitudinous applications in many areas of information technology and life science such as: better imaging systems; higher capacity optical data storage systems; more compact integrated optical telecom solutions. In the project the innovative opportunities to construct left-handed media and to achieve sub-wavelength imaging without left-handed media are proposed.

最近，John Pendry爵士的一篇关于使用左手介质(具有负介电常数和磁导率的材料)创建具有几乎不受限制的亚波长分辨率的完美透镜的可能性的论文，引发了对具有奇异和不寻常电磁特性的人工介质的研究热潮。这很可能是现代物理学一个新领域的诞生，现在被命名为超材料。这一新的研究分支涉及材料物理、电磁学、光学、无线电工程和电子学等多学科领域，涉及为满足规定的电磁要求而设计的人造电磁多功能材料。与自然界中所能找到的东西相比，具有更好的性能通常是术语“超材料”的基础。电磁超材料将在为未来的电子设备和部件提供新的功能和增强方面发挥关键作用，如高速电路、多功能智能微型天线和光圈、高分辨率成像系统、智能皮肤等。毕竟，这些系统和其他系统都是建立在衬底和上层之上的，它们的电磁响应功能决定了系统的设计和性能。从本质上讲，超材料是未来的材料，因为他们研究的主要目的是能够超越自然存在的物质和当前的材料研究带给我们的东西。通过将不同的微观元素结合到大规模设计中，人们不仅能够创造出具有根本新特性的材料，而且还能够根据新技术的要求制造出具有特性的其他材料。特别是，新的电磁特性将使人们能够以革命性的方式控制微波、毫米波和光学光。这就是制定本提案的背景。它涵盖了使用超材料进行亚波长成像的主题，它可以在信息技术和生命科学的许多领域找到大量应用，例如：更好的成像系统；更高容量的光学数据存储系统；更紧凑的集成光学电信解决方案。在该项目中，提出了构建左手介质和实现无左手介质的亚波长成像的创新机会。

项目成果

Optimal parameters of metallic nanorods arrays for subwavelength imaging

亚波长成像金属纳米棒阵列的优化参数

• DOI: 10.1117/12.860630
• 发表时间: 2010
• 作者: Belov P

Enhancement of evanescent spatial harmonics inside media with extreme optical anisotropy.

• DOI: 10.1364/ol.34.000527
• 发表时间: 2008-05
• 期刊: Optics letters
• 影响因子: 3.6
• 作者: P. Belov;Yan Zhao;Y. Hao;C. Parini