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Microcantilever based sensors are very promising devices for biochemical applications. They usually operate in two modes. In the first one a microcantilever static bending induced by the surface stress is observed, while in the second mode, resonant frequency shift caused by mass loading is measured. In the paper, the real-time noise analysis (RTNA) technique is presented. It is based on ARMA process...
The micro-vibration monitoring and control of vibration-sensitive precision facilities are important and the accurate measurement of micro-vibrations is necessary. The piezoelectric sensors such as piezoelectric shell structure have better electrical-mechanical coupling properties and less effect of bulk and weight. This paper studies the response characteristics of an interceptive spherical piezoelectric...
This paper reports a robust sensing method using nonlinear micromechanical resonators for applications such as resonant mass and thermal radiation sensors. Resonators show stochastic response by applying noise, in which resonators show two vibration states, i.e. large vibration amplitude state and small vibration amplitude state. Single resonator acts as a bistable element, and from responses of the...
The stochastic response, stability and reliability of quasi-linear systems subject to multi-time-delayed feedback control and wide-band random excitation are studied by using the stochastic averaging method for quasi Hamiltonian systems. It is verified that the time delay affect the response, the asymptotic stability and the first-passage time greatly, but the deterioration can be almost eliminated...
Variations in the interconnect geometry of nanoscale ICs translate to variations in their performance. The resulting diminished accuracy in the estimates of performance at the design stage can lead to a significant reduction in the parametric yield. Thus, determining an accurate statistical description (e.g., moments, distribution, etc.) of the interconnect's response is critical for designers. In...
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