SBIR Phase I: Electromagnetic Pulse Sensors Based on Magnetic Nanowire Arrays

SBIR 第一阶段：基于磁性纳米线阵列的电磁脉冲传感器

• 批准号: 1013468
• 负责人: Hao Zhu
• 金额: $ 15万
• 依托单位: Spectrum Magnetics, LLC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-07-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1013468&HistoricalAwards=false
• 关键词: SBIR; Phase; Electromagnetic; Pulse; Sensors

This Small Business Innovation Research (SBIR) Phase I project aims to develop novel field detectors and memory devices capable of detecting magnetic field of an electromagnetic pulse (EMP). The sensor is made of magnetic nanowire arrays consisting of magnetic nanowires embedded in an insulating matrix, and is able to memorize the incoming rf magnetic field pulse as short as 100ps andsurvive in an extreme EMP environment with fields as large as 2MV/m. Due to the passive operation mode, it can record rf field without electrical power. The recorded signal can then be read out during the power-on stage. The material system also shows other interesting phenomena such as tunableferromagnetic resonant (FMR) frequency. The objective of this research is to demonstrate the concept of using magnetic nanowire arrays to detect EMP. Specifically, issues including the stability of field detector in a microwave field and the response time will be addressed.The broader impact/commercial potential of this project arises from the rich phenomena exhibited by the magnetic nanowire array, each leading to a class of applications. The ?memory effect? leads to EMP sensors and potential applications in radio frequency identification (RFID) applications. Thetunable FMR feature can be used to construct tunable rf circulators/isolators and electromagnetic interference (EMI) shielding. The high magnetic permeability in GHz range can be used as antenna substrates on which miniaturized antenna can be fabricated.

该小型企业创新研究（SBIR）第一阶段项目旨在开发能够检测电磁脉冲（EMP）磁场的新型场检测器和存储设备。该传感器由磁性纳米线阵列组成，磁性纳米线嵌入绝缘基体中，能够记忆短至100 ps的射频磁场脉冲，并能在2 MV/m的极端电磁脉冲环境中生存。由于采用被动工作模式，它可以在没有电源的情况下记录射频场。然后可以在通电阶段读出记录的信号。该材料系统还显示出其他有趣的现象，如可调铁磁共振（FMR）频率.本研究的目的是展示使用磁性纳米线阵列检测电磁脉冲的概念。具体而言，包括场探测器在微波场中的稳定性和响应时间的问题将得到解决。该项目的更广泛的影响/商业潜力来自磁性纳米线阵列所表现出的丰富现象，每个现象都导致一类应用。的？记忆效应？导致电磁脉冲传感器和潜在的应用在射频识别（RFID）的应用。可调谐FMR特性可用于构建可调谐射频环行器/隔离器和电磁干扰（EMI）屏蔽。在GHz范围内的高磁导率可以用作天线基板，在其上可以制造小型化天线。