ELECTROPHONON RESONANCE IN COMPOSITIONAL SEMICONDUCTOR SUPERLATTICES

... Doctor of Philosophy Optical time resolved spin dynamics in III-V semiconductor quantum wells Matthew Anthony Brand This thesis presents time- resolved measurements of the spin evolution of transient ... relaxation in InGaAs/InP was due the native interface asymmetry present in the structure or if spin relaxation is generally fast in InGaAs wells (see chapter...

Ngày tải lên: 06/04/2013, 10:57

... of the interaction between GAPDH and PGK chimeric proteins linked to cerulean [16] or citrine [17], a FRET pair, in living cells FRET imaging of interaction between GAPDH and PGK Results and Discussion ... distances between the Nterminal amino acids of subunits O and P, subunits O and Q and subunits O and R are shown (B–D) FLIM analysis of the interaction be...

Ngày tải lên: 16/02/2014, 09:20

Ngày tải lên: 11/04/2014, 00:18

... thickness is increased Therefore, there is much stronger scattering in Bi2Te3 / Sb2Te3 SLs compared to the bulk Bi2Te3 films Similar enhanced scattering of optical phonons in Bi2Te3 / Sb2Te3 SLs ... conductivity in the Bi2Te3 / Sb2Te3 SL are 0.48 W/mK in SL1/1, 0.23 W/mK in the SL2/2, and 0.25 W/mK in the SL1/5 films.8 Therefore, it appears that acoustic phonon...

Ngày tải lên: 06/05/2014, 08:53

... the potential of this oxide superlattice approach IV CONCLUSIONS Cross- plane transport in LSMO/LMO superlattices has been presented as a potential route to a p- type thermoelectric material Epitaxial ... see http://jap.aip.org/about/rights _and_ permissions 063714-6 Jha et al J Appl Phys 112, 063714 (2012) FIG (a) Measured in -plane resistivity and (b) extracted cross- pla...

Ngày tải lên: 06/05/2014, 08:53

... thermal transport properties of p- type La0.67Sr0.33MnO3/ LaMnO3 perovskite oxide metal/ semiconductor superlattices, ” J Appl Phys 112, 063714 (2012) C Aruta, M Angeloni, G Balestrino, N G Boggio, P ... al on cross- plane transport of high resistivity p- type LSMO/ LMO superlattices The high resistivity helped mitigate the effects of electrical and thermal parasitic...

Ngày tải lên: 06/05/2014, 08:53

... in Sb2Te3 The phonon lifetime reduction in superlattice suggests phonon- interface interactions This could form the basis for phonon- blocking and electron-transmitting characteristics of the superlattices. 8 ... and the overall initial amplitude are telling of interesting physical phenomena that warrant further investigations The phonon scattering rate—the inverse of...

Ngày tải lên: 06/05/2014, 08:54

... in Sb2Te3 The phonon lifetime reduction in superlattice suggests phonon- interface interactions This could form the basis for phonon- blocking and electron-transmitting characteristics of the superlattices. 8 ... and the overall initial amplitude are telling of interesting physical phenomena that warrant further investigations The phonon scattering rate—the inverse of...

Ngày tải lên: 06/05/2014, 08:58

... quasi-classical transport theory based on Boltzmann’s equation with the collision integral taken within the relaxation time approximation, the conductivity for vertical transport in SL minibands at ... considered at the top of the Coulomb potential at the barrier Horizontal dashed lines indicate the bottom of the first miniband and the top of the second m...

Ngày tải lên: 21/06/2014, 05:20

... the machine as shown in Figure 2.2 [4] This wave links the stator winding, causing each coil of the stator winding to see an alternating flux This is the mechanism for inducing an alternating voltage ... MACHINE STRUCTURE The flux linkage equations for the synchronous machine are defined in terms of the self and mutual inductances of the windings Figure 2.1 shows an end view of the genera...

Ngày tải lên: 14/08/2014, 15:21

... anisotropic transport along the polymer chain and in π-stacking direction could be modeled as hopping in a cross lattice in αR space with αR defined as the interchain coupling strength This transport ... existing hopping transport models to compare the charge transport behavior in 2D and 3D In Chapter 3, we develop an “universal“ twodimensional charge transport model...

Ngày tải lên: 10/09/2015, 09:05

... II-VI semiconductors 38 2.3 TPA in strong confinement quantum dots 39 2.3.1 General information of TPA transition in quantum dots 40 2.3.2 TPA transition in quantum dots considering band mixing ... Chapter TWO -PHOTON EXCITATION AND RELAXATION IN CdSe QUANTUM DOTS 70 4.1 Introduction 70 4.2 Synthesis and characterization of CdSe quantum dots 74 4.3 TPA coe...

Ngày tải lên: 14/09/2015, 08:38

... experiments embodied in this thesis entitled, MULTI- PHOTON ABSORPTION INDUCED PHOTOLUMINESCENCE IN DOPED SEMICONDUCTOR QUANTUM DOTS AND HETERO- NANOSTRUCTURES , submitted for the degree of Joint Doctor ... is to certify that the work incorporated in the thesis entitled, MULTI- PHOTON ABSORPTION INDUCED PHOTOLUMINESCENCE IN DOPED SEMICONDUCTOR QUANTUM...

Ngày tải lên: 17/09/2015, 17:17