Multiphoton absorption and multiphoton excited photoluminescence in transition metal doped znsezns quantum dots

... nonlinear optical investigations of the multiphoton absorption (MPA) and multiphoton excited charge carrier dynamics in ZnSe/ZnS and transitionmetal -doped ZnSe/ZnS core/shell semiconductor quantum ... understanding of how the quantum confinement changes the spin-forbidden transitions in QDs The experiment setups and principles of Z-scan, pump-probe, and multiphotonexcited PL will be detailed in ... find the proper surfactants for certain kinds of transition- metal doping, and the second can only be 14 Chapter Introduction applied under high concentration doping Synthesizing Cu- and Mn-doped...

MULTI PHOTON ABSORPTION INDUCED PHOTOLUMINESCENCE IN DOPED SEMICONDUCTOR QUANTUM DOTS AND HETERO NANOSTRUCTURES

... 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 DOTS AND HETERO- NANOSTRUCTURES submitted by ... by doping and by forming hetero- nanostructures Specifically, this thesis presents the nonlinear optical investigations of the multi- photon absorption induced photoluminescence in Mn2+ -doped ZnS...

Báo cáo hóa học: " Whispering gallery modes in photoluminescence and Raman spectra of a spherical microcavity with CdTe quantum dots: anti-Stokes emission and interference effects" ppt

... splitting (b) Result of fast Fourier analysis adjacent TE and TM modes) again in agreement with measured modes separation (Fig 3a) Periodicities of 0.44 and 0.33 nm, obtained from the Fourier analysis, ... and Raman spectra from a monolayer of CdTe quantum dots were observed due to strong coupling with the spherical microcavity Simultaneous Stokes and anti-Stokes emission were realized by low intensity ... excitation below the band gap Recently, a microcavity- based Raman laser with an ultrahigh-Q silica microsphere was demonstrated based on WGM Raman Stokes scattering [4] In this paper we show that...

Aggregation enhanced two photon excited photoluminescence of noble metal nanoparticles and their chemical and biological applications

... optical properties of noble metal nanoparticles and two- photon photoluminescence, the aggregation of noble 32 metal nanoparticles induced enhanced two- photon photoluminescence and their applications ... photoluminescence of noble metal nanoparticles Firstly, two- photon excited photoluminescence and two- photon induced singlet oxygen generation of Au nanospheres and two ratios of Au nanorods before and after aggregation ... microfabrication,129 two- photon excited imaging,130 two- photon excited photoluminescence, 131, 132 and two- photon related chemical and biological applications. 133, 134 These interesting and potentially useful applications...

4d transition metal doped lini0 5mn1 5o4 cathodes for high power lithium batteries

... PE -LiNi0. 5Mn1. 5O4, (b) PE -LiNi0. 4Ru0. 05Mn1. 5O4, (c) RF -LiNi0. 5Mn1. 5O4, (d) RF -LiNi0. 4Ru0. 05Mn1. 5O4, (e) PA -LiNi0. 5Mn1. 5O4 and (f) PA -LiNi0. 4Ru0. 05Mn1. 5O4 109 Fig 6.2 XRD results of (a) PE -LiNi0. 5Mn1. 5O4, ... PE -LiNi0. 5Mn1. 5O4, PE -LiNi0. 4Ru0. 05Mn1. 5O4, (b) RF -LiNi0. 5Mn1. 5O4, RF -LiNi0. 4Ru0. 05Mn1. 5O4, and (c) PA -LiNi0. 5Mn1. 5O4 and PA -LiNi0. 4Ru0. 05Mn1. 5O4 111 Fig 6.3 SEM morphology of PA -LiNi0. 5-2zRuzMn1 .5O4 ... (a) LiNi0. 5Mn1. 5O4, (b) LiNi0. 4Rh0. 05Mn1. 5O4 and (c) LiNi0. 425Rh0. 05Mn1. 5O4 86 Fig 4.3 Charge/discharge profiles of (a) LiNi0. 5Mn1. 5O4, (b) LiNi0. 4Rh0. 05Mn1. 5O4 and (c) LiNi0. 425Rh0. 05Mn1. 5O4...

Incentives of Retirement Transition for Elderly Workers: An Analysis of Actual and Simulated Replacement Rates in Ireland ppt

... Incentives of Retirement Transition for Elderly Workers: An Analysis of Actual and Simulated Replacement Rates in Ireland Jinjing Li Maastricht University Cathal O’Donoghue Rural Economy and ... 5865 July 2011 ABSTRACT Incentives of Retirement Transition for Elderly Workers: An Analysis of Actual and Simulated Replacement Rates in Ireland Retirement behaviours and elderly poverty issues ... also struggling with increasing fiscal pressures This paper analyses the retirement pattern and the replacement rate observed in Ireland using the Living in Ireland panel dataset Since traditional...

From Cancer Patient to Cancer Survivor - Lost in Transition: An American Society of Clinical Oncology and Institute of Medicine Symposium pot

... From Cancer Patient to Cancer Survivor lost in transition AN AMERICAN SOCIETY OF CLINICAL ONCOLOGY AND INSTITUTE OF MEDICINE SYMPOSIUM Maria Hewitt and Patricia A Ganz Editors THE NATIONAL ... years to come Maria Hewitt and Patricia A Ganz Plenary Session INTRODUCTIONS TO THE SYMPOSIUM AND FOR REPRESENTATIVES OF THE AMERICAN SOCIETY OF CLINICAL ONCOLOGY AND THE INSTITUTE OF MEDICINE ... Appendix A FROM CANCER PATIENT TO CANCER SURVIVOR old survivorship movement and the founder of the NCCS He is the Murdock Head and Professor of Medicine and Health Policy and Professor of Pediatrics...

Báo cáo Y học: Changes in ultrastructure and the occurrence of permeability transition in mitochondria during rat liver regeneration ppt

... (Bio-Rad Laboratories Inc., Milan, Italy) The amount of cytochrome c in cytosol and mitochondria during rat liver regeneration was determined by SDS polyacrylamide gel electrophoresis analysis, as ... that the decrease in ATP synthesis rate observed in mitochondria isolated during the prereplicative phase of liver regeneration [12] is probably a result of the decrease in the surface area of the ... control and liver at 24 and 96 h after PH (Fig 4B) Ca2+ content in mitochondria during liver regeneration after PH The occurrence of mitochondrial permeability transition is due to an increase in mitochondrial...

Báo cáo hóa học: " Size-dependent visible absorption and fast photoluminescence decay dynamics from freestanding strained silicon nanocrystals" ppt

... doi:10.1186/1556-276X-6-320 Cite this article as: Dhara and Giri: Size-dependent visible absorption and fast photoluminescence decay dynamics from freestanding strained silicon nanocrystals Nanoscale Research ... for the distinct visible absorption and an intense visible PL at 580-585 nm from the freestanding Si NCs While the absorption/ photoexcitation of carriers is certainly a band-to-band transition ... synthesized anisotropically strained freestanding Si NCs with sizes approximately 5-42 nm that are freestanding and studied the optical absorption and PL emission from these NCs as a function...

Báo cáo hóa học: " Effect of annealing treatments on photoluminescence and charge storage mechanism in silicon-rich SiNx:H films" docx

... al.: Effect of annealing treatments on photoluminescence and charge storage mechanism in silicon-rich SiNx: H films Nanoscale Research Letters 2011 6:178 Submit your manuscript to a journal and ... S4 containing 33 at.% of silicon excess and annealed within the temperature range of 500-1100°C for 30 in N2 ambient, (c) evolution of Si-N stretching band position of samples S1, S2, S3, and ... that one dangling bond is sufficient to quench the luminescence of a Si-np [42] In this respect, the passivation of silicon- and nitrogendangling bonds acting as non-radiative recombination Figure...

Báo cáo hóa học: " Effects of Shape and Strain Distribution of Quantum Dots on Optical Transition in the Quantum Dot Infrared " doc

... valence band in the position The compressing and stretching condition of bottom in the pyramid QD is the same as the lens-shaped QD The difference of QD shape makes the strain distribution rather ... calculation, the QDIP system is made up of InAs/GaAs So, the second term has the same impact on the strain distribution In the following, we will have a look at the relationship of the strain distribution ... expansion in the variations of the bond length and the angles between the bond and its nearest neighbor bonds Under the rubric of shortrange contributions and by following the general notations in...

Báo cáo hóa học: " Electron States and Light Absorption in Strongly Oblate and Strongly Prolate Ellipsoidal Quantum Dots in Presence of Electrical and Magnetic Fields" pot

... creation of new selection rules during the process of the light absorption Therefore electronic states and direct inter-band light absorption are considered below for strongly oblate ellipsoidal quantum ... characteristics inside semiconductor SQ systems In particular in paper [15] the quantum effect of the magnetic ﬁeld inside the of the strongly prolate QD is investigated The effect of electrical ﬁeld ... Case: Electronic States Inside the Strongly Oblate Ellipsoidal Quantum Dot in the Presence of Unidirectional Electric and Magnetic Fields Let us to consider an impenetrable SOEQD located in unidirectional...

báo cáo khoa học: "Regulation of cell cycle transition and induction of apoptosis in HL-60 leukemia cells by lipoic acid: role in cancer prevention and therapy" ppt

... Regulation of G1/ S transition and induction of apoptosis in HL-60 leukemia cells by fenretinide (4HPR) Int J Cancer 1998, 78:53-61 Darzynkiewicz Z, Bedner E, Smolewski P: Flow cytometry in analysis of ... distribution and the expression of various cell cycle regulatory proteins in HL-60 cells Figure Effects of LA on cell cycle phase distribution and the expression of various cell cycle regulatory proteins ... vs 63.1% and 74% in 2.5 and mM LA treated cells) To further explore the cell cycle arrest by LA in HL-60 cells, specific cell cycle regulatory proteins required for G1, G1/S and S phase transition...

báo cáo khoa học: " Cold- and light-induced changes in the transcriptome of wheat leading to phase transition from vegetative to reproductive growth" pot

... broad overview of the behaviour of the wheat transcriptome to winter conditions and this has provided many interesting clues to the interaction of the several pathways involved in phase transition ... conditions, these photoreceptors contribute to the initiation of flowering through the stabilisation of the CO protein [37] Of the principal photoreceptors, only three, TaCRY2, TaPHYA and TaPHYC, ... relationship to each other in circadian cycling In crown tissue, transcript of TaLHY increased in abundance and then declined; conversely, that of TaTOC1 declined and later increased The profile for...

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