Object Illusion in Complex Electromagnetic Wave Environments (OBLICUE)

复杂电磁波环境中的物体错觉（OBLICUE）

• 批准号: EP/V048937/1
• 负责人: Sendy Phang
• 金额: $ 25.78万
• 依托单位: University of Nottingham
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FV048937%2F1
• 关键词: Object; Illusion; Complex; Electromagnetic; Wave

The ability to detect the presence and shape of arbitrary objects is of paramount importance in imaging technologies as well as in localisation for the future generation of wireless networks. This capability currently stands on sophisticated digital signal processing algorithms that process and somehow invert the signal backscattered from a target. While most of the research effort has to date focused on improving accuracy and efficiency of these algorithms, a key question that remains is whether we are able to hide an object from imaging/localisation technologies.Inherently, there is a strong need to protect electronic devices from external attacks in the context of electromagnetic compatibility, and data sniffing in the context of wireless communications. One might think that the extensive research in optics and electromagnetics to achieve cloaking of objects is the way forward to hide objects. However, this technology never achieves a perfect concealing of the object and is only designed to operate in free-space. The transformative idea that we put forward here avoids using a cloak and stands on dressing part of the environment boundary with anomalous mirrors. A system of those mirrors create the illusion of object displacement by shaping the electromagnetic wavefront. The reflection mask defining the mirror configurations will be engineered using advanced mathematical methods developed in the fields of quantum and statistical mechanics.

探测任意物体的存在和形状的能力在成像技术以及未来一代无线网络的定位中至关重要。这种能力目前建立在复杂的数字信号处理算法上，该算法处理并以某种方式反转来自目标的反向散射信号。虽然迄今为止大部分的研究工作都集中在提高这些算法的准确性和效率上，但仍然存在一个关键问题，即我们是否能够在成像/定位技术中隐藏物体。从本质上讲，在电磁兼容性的背景下，保护电子设备免受外部攻击，以及在无线通信的背景下保护数据嗅探，是一种强烈的需求。人们可能会认为，在光学和电磁学领域进行广泛的研究，以实现物体的隐形是隐藏物体的前进方向。然而，这项技术从来没有实现一个完美的隐藏对象，只是设计在自由空间操作。我们在这里提出的改造思想避免了使用斗篷，而是站在用反常的镜子修饰部分环境边界上。这种反射镜系统通过塑造电磁波阵面来制造物体位移的错觉。定义镜面结构的反射掩模将使用量子和统计力学领域发展的先进数学方法来设计。

项目成果

Photonic reservoir computing enabled by stimulated Brillouin scattering

通过受激布里渊散射实现光子储层计算

• DOI: 10.48550/arxiv.2302.07698
• 发表时间: 2023
• 作者: Phang S

Electromagnetic Illusion in Smart Environments

• DOI: 10.23919/at-ap-rasc54737.2022.9814300
• 发表时间: 2022-05
• 期刊: 2022 3rd URSI Atlantic and Asia Pacific Radio Science Meeting (AT-AP-RASC)
• 作者: Hamidreza Taghvaee;Mir Lodro;Neekar M Mohammed;S. Terranova;S. Phang;Martin Richter;G. Gradoni

Perfect-Lens Theory Enables Metasurface Reflectors for Subwavelength Focusing

完美透镜理论使超表面反射器能够实现亚波长聚焦

• DOI: 10.1103/physrevapplied.19.014004
• 发表时间: 2023
• 期刊: Physical Review Applied
• 影响因子: 4.6
• 作者: Taghvaee H

Non-spectroscopic sensing enabled by electro-optical reservoir computer

由光电储层计算机实现的非光谱传感

• DOI: 10.48550/arxiv.2202.01763
• 发表时间: 2022
• 作者: Anufriev G

Reconfigurable intelligent surface design in phase-space

相空间可重构智能曲面设计

• DOI: 10.23919/at-ap-rasc54737.2022.9814368
• 发表时间: 2022
• 作者: Mohammed N