Optical properties and excitation dynamics in 3d and 2d systems

Optical properties and excitation dynamics in 3d and 2d systems

Optical properties and excitation dynamics in 3d and 2d systems

... OPTICAL PROPERTIES AND EXCITATION DYNAMICS IN 3D AND 2D SYSTEMS CHEN JIANQIANG (M.Sc, NATIONAL UNIVERSITY OF SINGAPORE, SINGAPORE) A THESIS SUBMITTED FOR THE ... J You, G C Xing, T C Sum, S Dhar, Y P Feng, Ariando, Q.-H Xu and T Venkatesan, ―Defect dynamics and spectral observation of twinning in single crystalline LaAlO3 under subbandgap excitation, ‖ ... images...

Ngày tải lên: 10/09/2015, 09:30

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Báo cáo hóa học: " Synthesis, Optical Properties, and Photocatalytic Activity of One-Dimensional CdS@ZnS Core-Shell Nanocomposites" pdf

Báo cáo hóa học: " Synthesis, Optical Properties, and Photocatalytic Activity of One-Dimensional CdS@ZnS Core-Shell Nanocomposites" pdf

... observation Optical Properties and Photocatalytic Activity of 1D CdS@ZnS Core-Shell Nanocomposites The optical properties of 1D CdS@ZnS core-shell nanocomposites were measured using UV-vis absorption and ... spectrophotometer and WGY-10 spectrofluorimeter Photocatalytic Decomposition of MB and 4CP To evaluate the photocatalytic activity of the synthesized...

Ngày tải lên: 22/06/2014, 01:20

7 338 0
Crystal structure, optical properties and biological imaging of two curcumin derivatives

Crystal structure, optical properties and biological imaging of two curcumin derivatives

... Synthesis, optical properties and biological imaging of the rare earth complexes with curcumin and pyridine J Mater Chem 2012;22:22774e80 [25] Demas JN, Crosby GA The measurement of photoluminescence ... and SHELXS-97 Göttingen: University of Göttingen; 1997 [21] Zhou HP, Li DM, Zhang JZ, Zhu YM, Wu JY, Hu ZJ, et al Crystal structures, optical properties and theo...

Ngày tải lên: 01/07/2014, 13:22

6 546 0
Functional lanthanide doped upconversion nanocrystals optical properties and mechanism study

Functional lanthanide doped upconversion nanocrystals optical properties and mechanism study

... the fine-tuning of optical properties and functionalization of upconversion nanocrystals is presented in the next section Chapter 1.5 Optical properties tuning of upconversion nanocrystals 1.5.1 ... Overview of lanthanide- doped materials 1.2 Introduction of lanthanide- doped nanocrystals .1 1.3 Concept of upconvesion process .3 1.4 Lanthanide- doped upconversion...

Ngày tải lên: 10/09/2015, 09:04

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Management of fiber physical effects in high speed optical communication and sensor systems

Management of fiber physical effects in high speed optical communication and sensor systems

... MANAGEMENT OF FIBER PHYSICAL EFFECTS IN HIGH- SPEED OPTICAL COMMUNICATION AND SENSOR SYSTEMS YANG JING (B Eng., Xi’an Jiaotong University, China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF ... in both optical transmission and sensor systems In this chapter, the physical effects of optical fibers are introduced in section 1.1 The limitation...

Ngày tải lên: 11/09/2015, 10:01

168 364 0
Optical time resolved spin dynamics in III-V semiconductor  quantum wells

Optical time resolved spin dynamics in III-V semiconductor quantum wells

... 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

157 313 0
Báo cáo hóa học: " Side-by-Side In(OH)3 and In2O3 Nanotubes: Synthesis and Optical Properties" pot

Báo cáo hóa học: " Side-by-Side In(OH)3 and In2O3 Nanotubes: Synthesis and Optical Properties" pot

... transformation from In(OH)3 to In2O3 successfully Their composition and single-crystalline structures were confirmed using XRD, TEM, and SAED The optical determinations imply that the UV–Visible and PL behaviors ... and TEM Results and Discussion Figure 1a presents the XRD pattern of the In(OH)3 precursor All of the detectable reflection peaks match well 123 Fig XRD patterns o...

Ngày tải lên: 22/06/2014, 00:20

6 304 0
Báo cáo hóa học: " Influence of GaAs Substrate Orientation on InAs Quantum Dots: Surface Morphology, Critical Thickness, and Optical Properties" docx

Báo cáo hóa học: " Influence of GaAs Substrate Orientation on InAs Quantum Dots: Surface Morphology, Critical Thickness, and Optical Properties" docx

... QW and normal WL of InAs QDs These observations show that the formation and the optical properties of the quantum structures strongly depend on the substrate orientation The InAs QDs formation ... affecting the kinetics of adsorption, migration, desorption, reconstruction, and strain relaxation In fact, the in-QD strain relaxation is influenced by the substrate ori...

Ngày tải lên: 22/06/2014, 19:20

5 284 0
báo cáo khoa học: " Hydrophobic silver nanoparticles trapped in lipid bilayers: Size distribution, bilayer phase behavior, and optical properties" pot

báo cáo khoa học: " Hydrophobic silver nanoparticles trapped in lipid bilayers: Size distribution, bilayer phase behavior, and optical properties" pot

... result in changes in lipid bilayer phase behavior, which is related to the degree of lipid ordering and bilayer viscosity Hence, depending on their size and surface chemistry, embedded nanoparticles ... presence of nanoparticles can lead to changes in lipid packing and may disrupt lipid- lipid interactions amongst the headgroups and/ or acyl tails [5,6] Disru...

Ngày tải lên: 11/08/2014, 00:22

10 181 0
the speed of visual processing of complex objects in the human brain. sensitivity to image properties, the influence of aging, optical factors and individual differences.

the speed of visual processing of complex objects in the human brain. sensitivity to image properties, the influence of aging, optical factors and individual differences.

... THE SPEED OF VISUAL PROCESSING OF COMPLEX OBJECTS IN THE HUMAN BRAIN Sensitivity to image properties, the influence of aging, optical factors and individual differences ... the ERP responses Further, there are factors than can influence the processing speed of complex objects in the brain, such as aging Accumulating experimen...

Ngày tải lên: 22/12/2014, 20:09

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Defect mediated novel structural, optical, electrical and magnetic properties in ti1 xtaxo2 thin films

Defect mediated novel structural, optical, electrical and magnetic properties in ti1 xtaxo2 thin films

... resistivity for anatase Ti1- xTaxO2 (x = – 0.08) thin films and rutile Ti1- xTaxO2 (x = 0.08) thin film; (b) Variation of carrier density and Hall mobility for anatase Ti1- xTaxO2 thin films as a function ... transport, optical and magnetic properties appear to be quite distinct 1.2 Defects and Dopings in Semiconductors 1.2.1 Intrinsic and Extrinsic Defects...

Ngày tải lên: 09/09/2015, 18:49

185 484 0
Tài liệu Báo cáo Y học: A Raman optical activity study of rheomorphism in caseins, synucleins and tau New insight into the structure and behaviour of natively unfolded proteins pot

Tài liệu Báo cáo Y học: A Raman optical activity study of rheomorphism in caseins, synucleins and tau New insight into the structure and behaviour of natively unfolded proteins pot

... conformational ¯exibility We not consider the rheomorphic state of a Caseins, synucleins and tau as rheomorphic proteins The ROA data clearly show the caseins, synucleins and tau to have similar ... caseins, synucleins and tau (Eur J Biochem 269) 155 CONCLUSIONS This study has shown that the casein milk proteins, the brain proteins synuclein and...

Ngày tải lên: 21/02/2014, 15:20

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Báo cáo " The magnetic properties and charge-ordering state in La1-xCaxMnO3 (x = 0.46; 0.50) compounds " doc

Báo cáo " The magnetic properties and charge-ordering state in La1-xCaxMnO3 (x = 0.46; 0.50) compounds " doc

... From these curves with various temperature intervals, the magnetic The magnetic properties and charge-ordering state in 29 entropy change, ∆Smag, can be approximately calculated using isothermal ... external magnetic field by four-point probe technique The magnetocaloric effect measurement was performed in a pulse field Results and Discussion The XPD patterns of th...

Ngày tải lên: 05/03/2014, 14:20

5 318 1
CD4 lymphocyte dynamics in Tanzanian pulmonary tuberculosis patients with and without HIV co-infection ppt

CD4 lymphocyte dynamics in Tanzanian pulmonary tuberculosis patients with and without HIV co-infection ppt

... TB patients with and without HIV co-infection HIV uninfected PTB patients had significantly lower CD4 levels than healthy controls at baseline and did not reach the same levels of circulating CD4 ... doi:10.1186/1471-2334-12-66 Cite this article as: Andersen et al.: CD4 lymphocyte dynamics in Tanzanian pulmonary tuberculosis patients with and without...

Ngày tải lên: 06/03/2014, 04:20

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