Simulation-Based Design and Optimization of Rectangular Micro-Cantilever-Based Aerosols Mass Sensor

Simulation-Based Design and Optimization of Rectangular Micro-Cantilever-Based Aerosols Mass Sensor

Blog Article

Micro-Cantilever (MCL) Shelf is a thin film structure that is applied for aerosol particle mass sensing.Several modifications to the rectangular MCL (length-to-width ratio, slots at the anchor, serrations at its side edges) are made to deduce the role and influence of the shape of rectangular MCL-based aerosol mass sensors and reduce gas damping.A finite element fluid-structure interaction model was used to investigate the performance of MCL.

It is found that (I) the mass sensitivity and quality factor decline with the increasing of length-to-width ratio which alters the resonant frequency of the MCL.The optimum conditions, including the length-to-width ratio (σlw = 5) and resonant frequency (f0 = 540.7 kHz) of the MCL, are obtained with the constant surface area (S = 45,000 μm2) in the frequency domain ranging from 0 to 600 kHz.

(II) The slots can enhance the read-out signal and bring a small Q factor drop.(III) The edge serrations on MCL significantly reduce the gas damping.The results provide a reference for the design of aerosol mass sensor, which Other Food Supplements Products makes it possible to develop aerosol mass sensor with high frequency, sensitivity, and quality.