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的这项研究旨在开发能够在复杂传感器网络中进行无线询问的无源（无电池）磁传感器。该器件基于压电基板中表面声波 (SAW) 的传播速度，该速度由于覆盖的磁膜对外部磁场的电阻而变化。 智力优点 为了实现该提案的目标，PI 计划设计和制造基于压电基板上的声电效应波 (SAW) 的传感器。这是在 SAW 基板上集成磁阻 (MR) 薄膜的第一个示例，传感器信号表现为脉冲延迟而不是幅度变化，从而提供更好的辨别能力。该活动将通过与天线和反射器的进一步集成来探索选择性可编程识别（ID）型设备功能。该项目将有助于建立无源和现场可编程 SAW 设备的可能性，因为尚未报道用于热写入的射频信号能量。广泛影响：该项目为无源无线设备的潜在应用开辟了新的场所，包括电流传感、位置传感、结构健康监测以及生物化学功能化的环境监测。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，因此传感器可以在偏远和难以到达的位置使用。拟议的研究将在 1 名研究生和 1 名本科生的协助下进行。 PI 积极参与本科生的高级项目，并通过引入多样性和教授新课程。