The mass sensor based on a microcantilever is considered. The mass loading on a sensor-microcantilever is computed by aligning a position of the sensor microcantilever with a reference one. The control function contains information about the loading mass. The problem is reduced to a time varying parameter identification in microcantilever sensors that is addressed via higher order sliding mode ...

Parametric resonance based mass sensing leads to increased sensitivity over other resonant methods. In this work, we present a frequency-tuning approach to measure mass change in an ultra-sensitive mass sensor. This scheme drives the oscillator using an electrical signal with fixed frequency and tunes the parametric resonance frequency to match the driving frequency by feeding back a dc offset ...

Sensor The thermal sensor is designed for quick response, long-term stability, and high reliability. The sensor tube in an Aera mass flow product has a very small diameter and mass to ensure the fastest response to any change in gas flow conditions. Bypass Also known as the flow splitter, the bypass maintains a constant ratio of gas flow through the sensor and main flow path, dividing the gas s...

We experimentally investigate the performance of a nonlinear parametrically driven mass sensor in the presence of detection noise. Mass detection is achieved by measuring the amount of methanol vapor adsorption on the sensor. To demonstrate the advantage of parametric sensing in counteracting the influence of detection noise, we operate the sensor in both the parametric and harmonic resonance m...

We demonstrate the operation of an Electro Wetting on Dielectrics (EWOD) hybrid lab-on-a-chip system by utilizing a Quartz Crystal Microbalance (QCM) resonator as mass-sensitive sensor. We have tested the formation of a phosphorlipid monolayer out of an aqueous buffer suspension onto the integrated sensor. The altered mass load resulted in a shift of the resonance frequencies. Subsequently, the...