A Methodology for Remote Microwave Sterilization Applicable to the Coronavirus and Other Pathogens Using Retrodirective Antenna Arrays.
A Methodology for Remote Microwave Sterilization Applicable to the Coronavirus and Other Pathogens Using Retrodirective Antenna Arrays.
复制标题
DOI：
10.1109/jerm.2021.3077110
复制
发表时间：
2022-03
影响因子：
--
通讯作者：
Desmulliez MPY
中科院分区：
文献类型：
--
作者：
Kossenas K;Podilchak SK;Comite D;Re PDH;Goussetis G;Pavuluri SK;Griffiths SJ;Chadwick RJ;Guo C;Bruns N;Tait-Burkard C;Haas JG;Desmulliez MPY
本文描述了一种适用于新型冠状病毒严重急性呼吸综合征冠状病毒2（SARS-CoV-2）的创新远程表面灭菌方法。该过程基于在灭菌（OUS）下的表面或物体上施加液体膜。信标信号用于使用圆极化场自引导从设计的反向天线阵列（RDA）向OUS发射的功率;然后，通过升高并维持所需温度一定时间来完成灭菌。结果表明，该过程需要5分钟或更少的角度覆盖范围超过60度，同时遵守相关的安全协议。本文还模拟了入射到美国以外地区的功率，提供了与全波模拟一致的结果。利用工作在2.5GHz的2 × 1微带贴片阵列研制了一个实用的RDA系统，并通过对一个典型目标表面的定位进行了测试。测量，开发的外差RDA传输的功率采样，报告为各种距离和角度，在近场的系统中操作。为了进一步验证该方法，还开发了通过微波加热研究病毒灭活的附加实验。使用开放腔微波炉对比色皿中的冠状病毒（菌株229 E）和鸡蛋白色蛋白进行了测量。这表明，通过远程微波诱导的热将水性膜的温度升高至70 ℃可以使蛋白质变性并使病毒失活。该方法的可能应用包括救护车，医疗设备和物联网（IoT）设备的消毒。
This paper describes an innovative remote surface sterilization approach applicable to the new coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The process is based on the application of a liquid film on the surface or object under sterilization (OUS). A beacon signal is used to self-steer the transmitted power from the designed retrodirective antenna array (RDA) towards the OUS using circularly polarized fields; then, the sterilization is completed by raising and maintaining the required temperature for a certain time. Results suggest that the process takes 5 minutes or less for an angular coverage range over 60 degrees whilst abiding by the relevant safety protocols. This paper also models the power incident onto the OUS, providing consistent results with full-wave simulations. A practical RDA system is developed using a 2 × 1 microstrip patch array operating at 2.5 GHz and tested through the positioning of a representative target surface. Measurements, developed by sampling the power transmitted by the heterodyne RDA, are reported for various distances and angles, operating in the near-field of the system. To further validate the methodology, an additional experiment investigating virus deactivation through microwave heating was also developed. Measurements have been performed with an open cavity microwave oven on the Coronavirus (strain 229E) and egg white protein in a cuvette. This demonstrates that the temperature increases of aqueous films up to 70 C by remote microwave-induced heat can denature proteins and deactivate viruses. Possible applications of the method include sterilization of ambulances, medical equipment, and internet of things (IoT) devices.