Reconfigurable Intelligent Surfaces (RIS) have emerged as a disruptive technology with the potential to revolutionize wireless communication systems. In this paper, we present RIShield, a novel application of RIS technology specifically designed for radiation-sensitive environments. The aim of RIShield is to enable electromagnetic blackouts, preventing radiation leakage from target areas. We propose a comprehensive framework for RIShield deployment, considering the unique challenges and requirements of radiation-sensitive environments. By strategically positioning RIS panels, we create an intelligent shielding mechanism that selectively absorbs and reflects electromagnetic waves, effectively blocking radiation transmission. To achieve optimal performance, we model the corresponding channel and design a dynamic control that adjusts the RIS configuration based on real-time radiation monitoring. By leveraging the principles of reconfiguration and intelligent control, RIShield ensures adaptive and efficient protection while minimizing signal degradation. Through full-wave and ray-tracing simulations, we demonstrate the effectiveness of RIShield in achieving significant electromagnetic attenuation. Our results highlight the potential of RIS technology to address critical concerns in radiation-sensitive environments, paving the way for safer and more secure operations in industries such as healthcare, nuclear facilities, and defense.

翻译：可重构智能表面（RIS）作为一项颠覆性技术，有望彻底革新无线通信系统。本文提出RIShield——一种专为辐射敏感环境设计的新型RIS应用方案，旨在实现电磁屏蔽，阻止目标区域的辐射泄漏。我们构建了RIShield部署的综合框架，充分考虑了辐射敏感环境的特殊挑战与需求。通过策略性布置RIS面板，我们创建了智能屏蔽机制，可选择性吸收和反射电磁波，有效阻断辐射传输。为实现最优性能，我们建立了相应的信道模型，并设计了基于实时辐射监测动态调整RIS配置的调控方法。借助重构与智能控制原理，RIShield在最小化信号衰减的同时实现了自适应高效防护。通过全波仿真与射线追踪仿真，我们验证了RIShield在实现显著电磁衰减方面的有效性。研究结果彰显了RIS技术在解决辐射敏感环境关键问题上的潜力，为医疗、核设施与国防等行业的更安全运行铺平了道路。