Liquid sensing is achieved by using a resonant cylindrical shell. The sensing mechanism is based on the fact that the localized circumferential waves confined around the cylindrical shell interact intensively with the liquid sample inside the shell, with the resonant transmission of the cylindrical shell being strongly dependent on the acoustic properties of the liquid in the shell, especially the density of the liquid. Numerical simulations and experimental measurements show that the transmission dip varies with the concentration of a sodium iodide (NaI) and water mixture in the shell. The advantages of a liquid sensor based on the circumferential modes of a cylindrical shell are numerous. For example, a minimal liquid sample is required, the cylindrical shell is disposable, and the sensor is compatible with other microfluidic components, thereby allowing the liquid sensor to be integrated with lab-on-a-chip devices for various microfluidic sensing applications.

液体感应是通过使用共振圆柱壳实现的。感应机制基于以下事实：局限在圆柱壳周围的局部圆周波与壳内部的液体样品强烈相互作用，圆柱壳的共振传输强烈取决于壳中液体的声学特性，特别是液体的密度。数值模拟和实验测量表明，透射率下降随外壳中碘化钠（NaI）和水混合物的浓度而变化。基于圆柱形壳体的圆周模式的液体传感器的优点很多。例如，需要的液体样品最少，圆柱形外壳是一次性的，并且传感器与其他微流体组件兼容，