Hongyuan Liu

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— Electrodes are fundamental to the reliable operation of a new generation of portable bio-analytical instruments based around microsystems technology. The importance of eliminating false positives and false negatives for these instruments is driving work around embedded test, condition monitoring and both diagnostics and prognostics. This paper proposes(More)
This paper presents a solution for detecting degradation in electrodes that interface to fluidic or biological systems that forms the basis of numerous actuation and sensing mechanisms in the bio-fluidics field. In this solution, a mid-frequency oscillation test strategy is proposed and evaluated experimentally on an array of electrodes. This technique is(More)
In this paper, case study on outlet cracking is first conducted for the Goupitan and Xiaowan arch dams. A nonlinear FEM method is then implemented to study effects of the outlets on integral stability of the Xiluodu arch dam under two loading conditions, i.e., normal loading and overloading conditions. On the basis of the case study and the numerical(More)
A DfT strategy for MEMS-based DNA sensors is investigated in this paper. Based on a fault-free and defect model developed for a single sensing element and the VHDL-AMS simulation results, it is implied that an oscillation-based interface might be a potential solution for both testing and read out of this DNA sensor array system. A possible physical(More)
There is significant interest in the use of electrodes for sensing or actuation in bio-fluidic microsystems. Within these systems high levels of reliability are crucial and complimented by requirements for extremely low levels of false positive and false negatives. This paper extends previous work on impedance and oscillation based condition monitoring of(More)
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