On thickness-shear vibration and frequency shift of a quartz crystal resonator carrying an array of micro-beams adhered with tip nano-particles
On thickness-shear vibration and frequency shift of a quartz crystal resonator carrying an array of micro-beams adhered with tip nano-particles
复制标题
带有尖端纳米粒子粘附微梁阵列的石英晶体谐振器的厚度剪切振动和频移
DOI：
10.1080/15376494.2019.1702236
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发表时间：
--
影响因子：
2.8
通讯作者：
Zhou Jiang
中科院分区：
文献类型：
--
作者：
Xie Xuan;Zheng Baojing;Huang Wenjie;Zhou Jiang
为了研究不同尺寸和质量密度的纳米颗粒对QCR梁传感器频率的影响，建立了石英晶体谐振器载纳米颗粒微梁阵列的耦合动力学模型。纳米粒子的出现增加了微梁的惯性，降低了系统的频率，除非发生共振，频率会发生跳变。QCR微束传感器对纳米粒子的频率响应是非线性的，比传统的裸QCR传感器更加灵敏和复杂。通过选择合适的微梁长度使QCR梁接近共振状态，可以显著提高复合传感器的频移和质量灵敏度，但它们也会随着纳米颗粒的尺寸和质量密度而变化。研究结果对QCR微束传感器的颗粒检测和表征具有一定的指导意义。
We established the coupled dynamic model of a quartz crystal resonator carrying an array of micro-beams with tip nano-particles to study the frequency shift of QCR-beams sensors induced by nano-particles with different size and mass density. The appearance of nano-particles increases the inertia of the micro-beams and lower the system frequency unless the resonance occurs and the frequency will jump. The frequency response of QCR-microbeams sensors to nano-particles is nonlinear and much more sensitive and complicate than conventional bare QCR. By choosing appropriate micro-beams length allows the QCR-beams to approach the resonance state, the frequency shift and mass sensitivity of the composite sensor can be significantly improved, but they also change with the size and mass density of the nano-particles. The outcomes are helpful in the particle detection and characterizing using the QCR-microbeams sensor.