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首页> 外文会议>Symposium on Microelectronics Technology and Devices >Increased Sensitivity of Love Wave Delay-Lines for Heavy Metal Detection through the Deposition of a Mesoporous TiO_2 Coating
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Increased Sensitivity of Love Wave Delay-Lines for Heavy Metal Detection through the Deposition of a Mesoporous TiO_2 Coating

机译：通过沉积介孔TiO_2涂层增加了爱力波延迟线的敏感性。通过沉积介绍TiO_2涂层

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This work deals with the design of a highly sensitive biosensor for heavy metal detection in liquid medium. The developed biosensor consists in an acoustic Love wave sensor with polyelectrolyte multilayers (PEM) and E. coli bacteria as bioreceptors. The PEM represent a versatile polymeric matrix, deposited with an efficient "layer-by-layer" method. Bacteria are immobilized on the PEM, and are used to detect the presence of cadmium because of the modification of their viscoelastic properties induced by heavy metals. The PEM and bacteria deposition, as well as the detection of cadmium are measured through the real-time resonant frequency shifts of the sensor. The impact of the addition of a mesoporous TiO_2 layer between the Love wave guiding layer and the PEM has been studied. The subsequent results are compared to those obtained with a "classic" Love wave device (Quartz + SiO_2) and highlight an increased sensitivity of the acoustic platform towards cadmium.
机译：这项工作涉及在液体介质中的重金属检测的高敏感生物传感器的设计。开发的生物传感器在具有聚电解质多层（PEM）和E.Coli细菌的声学爱力波传感器中组成。 PEM代表一种具有有效的“层逐层”方法的通用聚合物基质。细菌被固定在PEM上，并且用于检测镉的存在，因为它们的重金属诱导的粘弹性性能的改变。通过传感器的实时谐振频移测量PEM和细菌沉积，以及镉的检测。研究了在爱波引导层和PEM之间添加了中孔TiO_2层的影响。将随后的结果与用“经典”爱波装置（石英+ SiO_2）获得的结果进行比较，并突出显示对镉的声学平台的灵敏度。

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