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Sn-, Ni-, Fe- and Al-doped ZnO and pure ZnO are prepared by coprecipitation method, and characterized by scanning electron microscope (SEM), energy diffraction spectra (EDS) and X-ray diffraction (XRD). Their formaldehyde gas sensing properties are evaluated and the results show that 2.2mol% Sn dopant can increase the response of ZnO by more than 2 folds, while other dopants increase little response...
We consider the problem of information consensus in networked multiagent systems in the presence of switching topology and time delay. The stability analysis is performed based on algebraic graph theory and matrix theory. We overview existing convergence results, and propose some new ones for both continuous and discrete time consensus protocols.
This paper studies a linear feedback synchronization scheme for the chaotic Lorenz-Stenflo systems. Some sufficient algebraic criteria for global chaos synchronization of the master and slave Lorenz-Stenflo systems via linear state error feedback control are rigorously proven by means of Lyapunov stability theory. The obtained criteria are further optimized to improve their sharpness. The numerical...
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