Hole dynamic

The relevance of nonpremixed edge flames to turbulent nonpremixed flames can be described in two aspects. One is the mechanism of turbulent nonpremixed lifted flames and the other, the flame-hole dynamics. For turbulent lifted flames in nonpremixed jets, the liftoff height is linearly dependent on jet velocity. There have... 

Based on the flame-hole dynamics [59], dynamic evolutions of flame holes were simulated to yield the statistical chance to determine the reacting or quenched flame surface under the randomly fluctuating 2D strain-rate field. The flame-hole d5mamics have also been applied to turbulent flame stabilization by considering the realistic turbulence effects by introducing fluctuating 2D strain-rate field [22] and adopting the level-set method [60]. 

J. Kim and J. S. Kim, Modelling of lifted turbulent diffusion flames in a channel mixing layer by the flame hole dynamics. Combust. Theory Model. 10 21-37, 2006. 

Material response in THz frequency region, which corresponds to far- and mid-infrared electromagnetic spectrum, carries important information for the understanding of both electronic and phononic properties of condensed matter. Time-resolved THz spectroscopy has been applied extensively to investigate the sub-picosecond electron-hole dynamics and the coherent lattice dynamics simultaneously. In a typical experimental setup shown in Fig. 3.5, an... 

A representative example for the information extracted from a TRMC experiment is the work of Prins et al. [141] on the electron and hole dynamics on isolated chains of solution-processable poly(thienylenevinylene) (PTV) derivatives in dilute solution. The mobility of both electrons and holes as well as the kinetics of their bimolecular recombination have been monitored by a 34-GHz microwave field. It was found that at room temperature both electrons and holes have high intrachain mobilities of fi = 0.23 0.04 cm A s and = 0.38 0.02 cm / V s V The electrons become trapped at defects or impurities within 4 ps while no trapping was observed for holes. The essential results are (1) that the trap-free mobilities of electrons and holes are comparable and (2) that the intra-chain hole mobility in PTV is about three orders of magnitude larger than the macroscopic hole mobility measured in PTV devices [142]. This proves that the mobilities inferred from ToF and FET experiments are limited by inter-chain hopping, in addition to possible trapping events. It also confirms the notion that there is no reason why electron and hole mobilities should be principally different. The fact... 

Prins P, Candeias LP, van Breemen AJJM, Sweelssen J, Herwig PT, Schoo HFM, Siebbeles LDA (2005) Electron and hole dynamics on isolated chains of a solution-processable poly (thienylenevinylene) derivative in dilute solution. Adv Mater 17 718... 

Dameris M., U.Berger, G.Guenter and A.Ebel, (1991) The ozone hole dynamical consequences as simulated with a three-dimensional model of the middle atmosphere Ann. Geophysicae 9, p. 661 -668,... 

First, we introduce the two basic frameworks of electronic structure theory, molecular orbital (MO) theory and band theory. Electronic structure theory can provide calculation of the total energy of a system. In addition, MO and band theories give one-electron states, which are often used to represent electron (hole) dynamics. 

Colombo D. P. Jr, Roussel K. A., Saej J., Skinner D. E., Cavaleri J. J. and Bowman R. M. (1995), Femtosecond study of the intensity dependence of electron-hole dynamics in Ti02 nanoclusters , Chem. Phys. Lett. 232, 207-214. 

Prather, M., M.M. Garcia, R. Suozzo, and D. Rind, Global impact of the Antarctic ozone hole Dynamical dilution with a three dimensional chemical transport model. J Geophys Res 95, 3449, 1990. 

To follow the evolution of the electronic wavefunction, its spin density is computed, partitioned onto the atoms and can be decomposed in the space of the VB structures of the moat at each step of the simulation. One can then plot the electron dynamics trajectory on the moat diagram (Fig. 1) where the structures represent exclusively the nature of the electronic wavefunction in this case. Because each structure in Fig. 1 is a superposition of two resonance structures where the unpaired electron and the positive charge are interchanged, following the unpaired electron is equivalent to following the positive charge. This is how we monitor the hole dynamics. 

Astrophysics Stellar structure, evolution of galaxies, stellar and black hole dynamics... 

Meng S, Kaxiras E (2010) Electron and hole dynamics in dye-sensitized solar cells influencing factors and systematic trends. Nano Lett 10 1238-1247... 

This can be implemented as an approximation of the partial differential equations describing the motion of the air column. For the sake of simplicity, this example does not include the effect of the air holes dynamically opening and closing this could be done simply by adding the appropriate bond graphs components to the model. 

The Fourier transforms of the screened interaction are very useful entities to understand the physics of electron (hole) dynamics at surfaces. The screened... 

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