Adaptive Asymptotical Synchronization for Stochastic Complex Networks with Time-Delay and Markovian Switching

Copyright © 2014 Xueling Jiang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.The problem of adaptive asymptotical synchronization is discussed for the stochastic complex dynamical networks with time-delay and Markovian switching. By applying the stochastic analysis approach and the M-matrix method for stochastic complex networks, several sufficient conditions to ensure adaptive asymptotical synchronization for stochastic complex networks are derived. Through the adaptive feedback control techniques, some suitable parameters update laws are obtained. Simulation result is provided to substantiate the effectiveness and characteristics of the proposed approach

Adaptive Asymptotical Synchronization for Stochastic Complex Networks with Time-Delay and Markovian Switching

The problem of adaptive asymptotical synchronization is discussed for the stochastic complex dynamical networks with time-delay and Markovian switching. By applying the stochastic analysis approach and the M-matrix method for stochastic complex networks, several sufficient conditions to ensure adaptive asymptotical synchronization for stochastic complex networks are derived. Through the adaptive feedback control techniques, some suitable parameters update laws are obtained. Simulation result is provided to substantiate the effectiveness and characteristics of the proposed approach

On uncertainty relations in noncommutative phase space

AbstractThe uncertainty relations are discussed on a noncommutative plane when noncommutativity of momentum spaces is considered. It is possible to construct normalizable states by simultaneously saturating two coordinate-momentum uncertainty relations. However, under the natural condition θη ≪ 4ħ2 one can not construct a normalizable state by simultaneously saturating any other pairs out of four basic nontrivial uncertainty relations.</jats:p

Enhanced fluorescence of CsPbBr₃/ZnO heterojunction enabled by titanium nitride nanoparticles

Abstract We prepared CsPbBr3/ZnO heterojunctions by self-assembling colloidal CsPbBr3 quantum dots (QDs) on the surface of the ZnO film. The fluorescence of CsPbBr3/ZnO heterojunctions was modulated by titanium nitride nanoparticles (TiN NPs) to obtain highly photoluminescent CsPbBr3/TiN/ ZnO heterojunctions. The results showed that when the TiN thickness was 51 nm, the fluorescence of the CsPbBr3/TiN/ZnO heterojunction was enhanced by 3.2 times compared to that of the CsPbBr3/ZnO heterojunction. TiN NPs combined most of the photo-generated electrons with the holes on the surface of the TiN/CsPbBr3 heterojunction, which increased the electron transfer rate and reduced non-radiative recombination. This method of enhancing heterojunction fluorescence could provide a new pathway for photovoltaic, light-emitting diode (LED), photodetector, light sensor, and image sensor applications.</jats:p

DKP oscillator in noncommutative phase space

The exact solutions of the Duffin–Kemmer–Petiau (DKP) oscillator for spin-0 particles have been studied in noncommutative phase space. The results show that due to the noncommutative effect, the energy spectrum of the DKP oscillator for spin-0 particles is no longer degenerate. In addition, we obtain the nonrelativistic limit of the energy spectrum. </jats:p

Enhanced photoluminescence of a CsPbBr3/Al2O3 film heterojunction enabled by coupling of gold nanoparticles

We studied an enhanced photoluminescence (PL) effect of CsPbBr _3 /Al _2 O _3 heterojunction by using gold nanoparticls (NPs). The CsPbBr _3 /Al _2 O _3 heterojunction and CsPbBr _3 /Au/Al _2 O _3 heterojunction were respectively prepared on porous Al _2 O _3 film by using a colloidal self-assembly method. The defect fluorescence of CsPbBr _3 /Al _2 O _3 heterojunction was enhanced up to 40 times due to the transfer of photo-generated carriers from the CsPbBr _3 quantum dots (QDs) to the porous Al _2 O _3 film. To suppress the defect fluorescence of heterojunction, the CsPbBr _3 /Au/Al _2 O _3 heterojunction was prepared by loading the gold NPs between the CsPbBr _3 QDs film and the porous Al _2 O _3 film. The results showed that the gold NPs facilitated the transfer of the photo-generated carriers from the CsPbBr _3 QDs to the surface of porous Al _2 O _3 film. Compared with the porous Al _2 O _3 film and CsPbBr _3 /Al _2 O _3 heterojunction, the peak fluorescence of CsPbBr _3 /Au/Al _2 O _3 heterojunction was enhanced to 6.4 times and 2.8 times, respectively. This method of enhanced fluorescence of QD heterojunction provides a new pathway in the applications of photovoltaic, photodetector, LED, image sensor, photocatalysis