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Quantification of Staphylococcus aureus using surface acoustic wave sensors

机译:使用表面声波传感器定量金黄色葡萄球菌

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Quartz crystal microbalance (QCM), surface acoustic wave (SAW)-Rayleigh and ZnO based SAW-Love sensors were fabricated and their sensitivity was comparatively analyzed for the quantification of Staphylococcus aureus ( S. aureus ). The SAW based sensors showed response magnitudes up to three times greater than that of the QCM sensor for the same mass loading of S. aureus . The ZnO nanoparticle-based SAW-Love sensor has a maximum mass loading sensitivity of 328.75 Hz ng ~(?1) . The SAW-Love sensor achieved a lower limit of detection of 2 × 10 ~(3) CFU mL ~(?1) compared to the QCM counterpart (2 × 10 ~(5) to 2 × 10 ~(6) CFU mL ~(?1) ) under the same conditions. The SAW-Love sensor could be used as a disposable chip in micro or ultra-trace accurate diagnosis methods.
机译:制作了基于石英晶体的微天平(QCM),表面声波(SAW)-Rayleigh和基于ZnO的SAW-Love传感器,并对它们的灵敏度进行了比较分析,以定量金黄色葡萄球菌(S. aureus)。对于相同质量的金黄色葡萄球菌,基于SAW的传感器的响应幅度是QCM传感器的三倍。基于ZnO纳米粒子的SAW-Love传感器的最大质量负载灵敏度为328.75 Hz ng〜(?1)。与QCM对应物(2×10〜(5)至2×10〜(6)CFU mL〜相比,SAW-Love传感器的检测下限为2×10〜(3)CFU mL〜(?1)。 (?1))在相同条件下。 SAW-Love传感器可以用作微或超痕量精确诊断方法中的一次性芯片。

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