Quantification of multiple bioagents with wireless, remote-query magnetoelastic microsensors
Quantification of multiple bioagents with wireless, remote-query magnetoelastic microsensors
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DOI：
10.1109/jsen.2006.874450
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发表时间：
2006-06-01
影响因子：
4.3
通讯作者：
Grimes, Craig A.
中科院分区：
文献类型：
--
作者：
Ong, Keat G.;Zeng, Kefeng;Grimes, Craig A.
本文提出了一种用于同时监测多种生物制剂的微磁弹性传感器阵列。磁弹性传感器，由低成本非晶铁磁带制成；与压电类似且互补。声波传感器，通过共振行为的变化来跟踪感兴趣的参数。磁弹性传感器由交流磁场激励，进而产生磁通量，可以用传感线圈从远处检测到磁通量。因此，这些传感器极具吸引力，不仅因为它们尺寸小、成本低，还因为它们的无源和无线特性。磁弹性传感器已应用于监测压力、温度、液体密度和粘度、流体流速和方向，以及改变质量或弹性的化学/生物响应涂层、各种生物和化学试剂。在本文中，我们报告了用于同时测量大肠杆菌 O157:H7、葡萄球菌肠毒素 B 和蓖麻毒素的六传感器阵列的制造和应用。此外，传感器阵列还监测温度和 pH 值，因此测量结果独立于这两个参数。
This paper presents a micromagnetoelastic sensor array for simultaneously monitoring multiple biological agents. Magnetoelastic sensors, made of low-cost amorphous ferromagnetic ribbons; are analogous and complementary to piezoelectric. acoustic wave sensors, which track parameters of interest via changes in resonance behavior. Magnetoelastic sensors are excited with magnetic ac fields, and, in turn, they generate magnetic fluxes that can be detected with a sensing coil from a distance. As a result, these sensors are highly attractive, not only due to their small size and low cost, but also because of their passive and wireless nature. Magnetoelastic sensors have been applied for monitoring pressure, temperature, liquid density, and viscosity, fluid flow velocity and direction, and with chemical/biological responsive coatings that change mass or elasticity, various biological and chemical agents. In this paper, we report the fabrication and application of a six-sensor array for simultaneous measurement of Escherichia coli O157:H7, staphylococcal enterotoxin B, and ricin. In addition, the sensor array also monitors temperature and pH so the measurements are independent from these two parameters.