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首页> 外文会议>Microelectronics technology and devices - SBMicro 2011 >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：通过中孔TiO_2涂层的沉积，增加了用于重金属检测的Love Wave延迟线的灵敏度。

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摘要

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：这项工作涉及用于液体介质中重金属检测的高灵敏度生物传感器的设计。研发的生物传感器包括一个声Love波传感器，该传感器具有聚电解质多层（PEM）和大肠杆菌作为生物受体。 PEM代表一种通用的聚合物基体，采用有效的“逐层”方法沉积。细菌固定在PEM上，由于重金属引起的粘弹性的改变，因此被用于检测镉的存在。通过传感器的实时共振频率偏移来测量PEM和细菌沉积以及镉的检测。研究了在Love波导层和PEM之间添加介孔TiO_2层的影响。随后的结果与使用“经典” Love波器件（石英+ SiO_2）获得的结果进行了比较，并强调了声学平台对镉的敏感性增加。

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  • 来源
  • 会议地点 Joao Pessoa(BR);Joao Pessoa(BR)
  • 作者

    L.Blanc; I.Gammoudi; H.Tarbague; C.Boissiere; R.Kalfat; C.Dejous; A. Tetelin; D. Rebiere;

  • 作者单位

    Universite de Bordeaux - Laboratoire IMS - CNRS-UMR 5218, Talence, France;

    Universite de Bordeaux - Laboratoire IMS - CNRS-UMR 5218, Talence, France,Institut National de Recherche et d'Analyse Physico-chimique, BioTechpole, Sidi-Thabet, Tunisia;

    Universite de Bordeaux - Laboratoire IMS - CNRS-UMR 5218, Talence, France;

    LCMCP, College de France - CNRS-UMR 7574, Paris, France;

    Institut National de Recherche et d'Analyse Physico-chimique, BioTechpole, Sidi-Thabet, Tunisia;

    Universite de Bordeaux - Laboratoire IMS - CNRS-UMR 5218, Talence, France;

    Universite de Bordeaux - Laboratoire IMS - CNRS-UMR 5218, Talence, France;

    Universite de Bordeaux - Laboratoire IMS - CNRS-UMR 5218, Talence, France;

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  • 正文语种 eng
  • 中图分类 半导体技术;
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