SGER: Field Programmable Magnetic Surface Acoustic Wave (SAW) Devices for Hybrid Sensor Networks

SGER：用于混合传感器网络的现场可编程磁表面声波 (SAW) 器件

• 批准号: 0632523
• 负责人: Pallavi Dhagat
• 金额: --
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0632523&HistoricalAwards=false
• 关键词: SGER; Field; Programmable; Magnetic; Surface

ECS-0632523P. Dhagat, Oregon State UniversityThe research aims to develop passive (battery-less) magnetic sensors amenable to wireless interrogation in complex sensor networks. The devices are based on the propagation velocity of surface acoustic waves (SAWs) in a piezoelectric substrate changing due to the resistance of an overlying magnetic film responding to external magnetic fields.Intellectual Merit To accomplish the goals of this proposal the PI plans to design and fabricate sensors based on acousto-electric effect waves (SAW) on a piezoelectric substrate. It is the first example of an integration of a magnetoresistive (MR) film on SAW substrates and the sensor signal manifest as a pulse delay instead of an amplitude change providing better discrimination. The activity will explore selectively programmable identification (ID) type device feature by further integration with antenna and reflectors. This project would help to establish the possibilities of passive and field programmable SAW devices since RF signal energy for thermal writing has not been reported yet. Broad Impact: This project opens a new venue for potential applications of passive, wireless devices including current sensing, position sensing, structural health monitoring and, if bio-chemically functionalized, environment monitoring. Further, as they require no battery and their data can be retrieved by a wireless query the sensors may be used in remote and inaccessible locations. The proposed research will be conducted with the assistance of 1 graduate and 1 undergraduate student. The PI is intensely involved in undergraduate students senior projects and by bringing diversity and teaching new courses.

ECS-0632523P。俄勒冈州立大学达加特研究旨在开发可被动的（无电池）磁性传感器，可在复杂传感器网络中进行无线询问。 The devices are based on the propagation velocity of surface acoustic waves (SAWs) in a piezoelectric substrate changing due to the resistance of an overlying magnetic film responding to external magnetic fields.Intellectual Merit To accomplish the goals of this proposal the PI plans to design and fabricate sensors based on acousto-electric effect waves (SAW) on a piezoelectric substrate.这是在锯底物上集成磁化膜（MR）膜的第一个例子，传感器信号表现为脉冲延迟，而不是振幅变化，从而提供了更好的区分。该活动将通过与天线和反射器进一步集成，探索有选择性的可编程标识（ID）类型设备功能。该项目将有助于确定被动和野外可编程锯设备的可能性，因为尚未报道用于热写作的RF信号能量。广泛的影响：该项目为被动，无线设备的潜在应用开设了一个新的场所，包括当前感测，位置感应，结构性健康监测以及如果生物化学功能化，环境监测。此外，由于它们不需要电池，并且可以通过无线查询检索数据，因此传感器可以在远程和无法接近的位置中使用。拟议的研究将在1名毕业生和1名本科生的协助下进行。 PI强烈参与了本科生高级项目，并带来多样性和教授新课程。