Báo cáo hóa học: " Femtosecond Carrier Dynamics in In2O3 Nanocrystals " pptx

... relaxation dynamics of photo-generated carriers in In 2 O 3 nanocrystals. Intensity measurements reveal that Auger recombination plays a crucial role in the carrier dynamics for the carrier densities investigated ... in the Auger dynamics. In conclusion we have investigated ultrafast carrier dynamics in In 2 O 3 NCs using pump-probe differential absorption white light...

Ngày tải lên: 22/06/2014, 01:20

... InN (1 1 0) InN (1 0 1) InN (0 0 2) InN Aluminium Aluminium Intensity (a.u.) θθ−−22θθ (deg) Aluminium (1 0 0) InN Fig. 2 XRD spectrum of the InN NWs grown at 600 °Con Au/Si(111) lower line ... constants extracted when probing higher energy states are also increasing with increasing fluence. To further investigate the dynamics near the transition point between state filling and free carr...

Ngày tải lên: 22/06/2014, 01:20

... interferometer, using conventional fringe-shift technique as discussed in details in Ref. [12]. The investigation was performed at liquid nitrogen temperature by mounting the samples in temper- ature-regulated ... metallic agglomerates was involved in the processes and was responsible for the observed effects. Conclusions Cu-doping effects in CdI 2 nanocrystals were studied experi...

Ngày tải lên: 22/06/2014, 01:20

... interest in under- standing interacting 1D systems, intertube interactions are of substantial technological importance because SWNTs naturally form bundles in typical syntheses [24] and bun- dling ... interactions). This coupling quenches the radiative recombination opening nonradiative relaxation paths by transferring the energy to the lattice via phonons emission. In addition to monit...

Ngày tải lên: 22/06/2014, 01:20

... that the fixed points 0, ± √ α 2  are not attracting, since every solution starting on the line x  0 is 2-periodic. Remark 4.8. It is interesting to notice that, in the three cases in which there ... fixed points, stable but not asymptotically stable fixed points, nonattracting unstable fixed points, and attracting unstable fixed points. The paper is organized, besides this introduction, i...

Ngày tải lên: 21/06/2014, 05:20

... crucial role in the fast relaxation dynamics of carriers inhibiting the non-radiative Auger recombination even at excitation fluence that generates 20 carriers/NCs. Experimental Procedure In this work, ... non-linear interactions. Conclusions We have investigated femtosecond carrier dynamics in oxidized 2.8 nm Si-NCs using transient degenerate and non-degenerate absorption measur...

Ngày tải lên: 22/06/2014, 01:20

... (5.87) for every ε and γ satisfying (5.8)or(5.9). Letting ε → 1 −0weobtain lim ε→1−0 s γ (ε) =0. (5.88) SOME ELEMENTARY INEQUALITIES IN GAS DYNAMICS EQUATION V. A. KLYACHIN, A. V. KOCHETOV, AND V. ... V − γ (ε)andV + γ (ε). We say that a set G ⊂ R n is linearly connected if any pair of points x, y ∈ G can be joined on D by an arc. 18 Some elementary inequalities in gas dynamics equati...

Ngày tải lên: 22/06/2014, 21:20

... gain in sum rate decreases with ρ, resulting in decreasing Λ ∗ . 6. CONCLUSION In this paper, we focus on distributed information retrieval in wireless sensor networks. Energy efficiency is introduced as ... En- gineering, Cornell University. In 2004, she joined the Department of Electrical and Computer Engineering, UC Davis, where she is currently an Assistant Professor. Her research...

Ngày tải lên: 23/06/2014, 00:20

... voting over income distributions as in Grandmont [8]. Conditions (2) and (3) insure that every tax is increasing with the revenues in such a way that it does not change the post-tax income ranking. ... (Marhuenda and Ortu˜no-Ortin [6]), considering solution concepts less demanding than the core (De Donder and Hindriks [10]). In a majority game in coalitional form of voting over income...

Ngày tải lên: 18/06/2014, 15:20