Xu Zhangliang, Yuan Yong J
Laboratory of Biosensing and MicroMechatronics, School of Materials Science and Engineering, Southwest Jiaotong University Chengdu Sichuan 610031 China
School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology Chongqing 401331 China.
RSC Adv. 2019 Mar 14;9(15):8411-8414. doi: 10.1039/c8ra09790a. eCollection 2019 Mar 12.
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 (). The SAW based sensors showed response magnitudes up to three times greater than that of the QCM sensor for the same mass loading of . The ZnO nanoparticle-based SAW-Love sensor has a maximum mass loading sensitivity of 328.75 Hz ng. The SAW-Love sensor achieved a lower limit of detection of 2 × 10 CFU mL compared to the QCM counterpart (2 × 10 to 2 × 10 CFU mL) under the same conditions. The SAW-Love sensor could be used as a disposable chip in micro or ultra-trace accurate diagnosis methods.
制备了石英晶体微天平（QCM）、表面声波（SAW）-瑞利传感器和基于ZnO的SAW-洛夫传感器，并对它们在定量（）方面的灵敏度进行了比较分析。对于相同的（）质量负载，基于SAW的传感器显示出的响应幅度比QCM传感器高出三倍。基于ZnO纳米颗粒的SAW-洛夫传感器的最大质量负载灵敏度为328.75 Hz ng。在相同条件下，与QCM传感器（2×10至2×10 CFU/mL）相比，SAW-洛夫传感器实现了2×10 CFU/mL的更低检测限。SAW-洛夫传感器可作为微型或超痕量精确诊断方法中的一次性芯片使用。
