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Quantum dots

Estados ligados y resonancias en quantum dots de una partícula y campo externo

Estados ligados y resonancias en quantum dots de una partícula y campo externo

... En este cap´ıtulo desarrollaremos el problema de una part´ıcula cargada en un campo magn´etico constante. La raz´on por la cual es importante tratar este tema est´a basada en que el tema principal del trabajo consiste en ...

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Type II InAs/GaAsSb quantum dots: Highly tunable exciton geometry and topology

Type II InAs/GaAsSb quantum dots: Highly tunable exciton geometry and topology

... Semiconductor quantum dots (QDs) play a key role in ultrafast signal processing devices such as electro-optical modulators, switches, and delay ...and quantum wells (QWs), in par- ticular, have made ...

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Semi-classical model of a pair of coupled quantum dots

Semi-classical model of a pair of coupled quantum dots

... coupled quantum dots, where the coupling is because of the Foerster ...coupled quantum dots interacting with its own classical electric ...

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Dynamic behavior of collective and reduced Quantum dots system

Dynamic behavior of collective and reduced Quantum dots system

... of quantum mechanics topics most relevant and necessary in order to our later work in this dissertation, especially regarding the Jaynes-Cummings model (JCM), quantum entanglement and principles of ...

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Nanocompósitos obtenidos de la síntesis in situ de quantum dots de CdSe en películas compuestas de quitosano y polímeros conductores

Nanocompósitos obtenidos de la síntesis in situ de quantum dots de CdSe en películas compuestas de quitosano y polímeros conductores

... HIPÓTESIS Películas obtenidas de mezclas de quitosano y polímeros conductores podrán ser empleados como una matriz polimérica para la síntesis in-situ y distribución de quantum dots de C[r] ...

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Estudio del potencial de bioconjugados Quantum Dots para el marcaje específico de dianas involucradas en Esclerosis Lateral Amiotrófica

Estudio del potencial de bioconjugados Quantum Dots para el marcaje específico de dianas involucradas en Esclerosis Lateral Amiotrófica

... utiliza Quantum Dots (QDs), nanopartículas con características fotoluminiscentes únicas y ventajosas sobre los fluoróforos tradicionales y con gran potencial como herramienta puntera en el campo de la ...

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Excitons in coupled quantum dots: hydrostatic pressure and electric field effects

Excitons in coupled quantum dots: hydrostatic pressure and electric field effects

... coupled quantum dots (CQDs) have drawn a lot of interest recently due to the promising applications in spintronics where individual spins can be controlled to produce massive information storage devices [3, ...

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Dielectric and plasmonic waveguides based on quantum dots embedded in polymers

Dielectric and plasmonic waveguides based on quantum dots embedded in polymers

... In this work a review about the dispersion of colloidal quantum dots in polymers as method to implement active waveguides is presented. For this purpose several kinds of nanostructures (CdS, CdTe, CdSe and ...

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Nonlinear thermoelectric response of quantum dots: Renormalized dual fermions out of equilibrium

Nonlinear thermoelectric response of quantum dots: Renormalized dual fermions out of equilibrium

... correlated quantum dots has been studied in some detail throughout the last ...Kondo-correlated quantum dots and extend the underlying method, a renormalized superperturbation theory on the ...

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EFFECT OF SYNTHESIS VARIABLES ON THE FLUORESCENCE OF CDSE QUANTUM DOTS   POLYSTYRENE LATEXES

EFFECT OF SYNTHESIS VARIABLES ON THE FLUORESCENCE OF CDSE QUANTUM DOTS POLYSTYRENE LATEXES

... selenide quantum dots (CdSe QDs) are semiconductor nanocrystals from II-VI ...zero-dimensional quantum confinement and their size (1-10nm), they own extensive absorption spectra with narrow and ...

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Confinement of Dirac electrons in graphene magnetic quantum dots

Confinement of Dirac electrons in graphene magnetic quantum dots

... The motion of the massless Dirac electrons on the graphene surface is sensitive to perpendicular magnetic fields. In this letter, we want to discuss the confining properties of perpendicular fields with axial symmetry ...

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In situ preparation of CdTe quantum dots capped with a β cyclodextrin epichlorohydrin polymer: Polymer influence on the nanocrystal’s optical properties

In situ preparation of CdTe quantum dots capped with a β cyclodextrin epichlorohydrin polymer: Polymer influence on the nanocrystal’s optical properties

... Abstract: β-Cyclodextrin (βCD), the less water soluble of the cyclodextrins, has been used as a capping agent in the preparation of semiconductor nanocrystals or quantum dots (QDs). Nevertheless, no reports ...

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Conductance scaling in Kondo correlated quantum dots: Role of level asymmetry and charging energy

Conductance scaling in Kondo correlated quantum dots: Role of level asymmetry and charging energy

... correlated quantum dots provides a sensitive probe of the physics ...a quantum dot described by the single-level Anderson impurity ...molecular quantum dots exhibiting the Kondo ...

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HIT intermediate-band solar cells with self-assembled colloidal quantum dots and metal nanoparticles

HIT intermediate-band solar cells with self-assembled colloidal quantum dots and metal nanoparticles

... Photovoltaic test devices based on the HIT structure have been fabricated that incorporate PbS colloidal quantum dots in the intrinsic a-Si:H region of the front contact and/or Au col[r] ...

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In situ evidence of the redox state dependence of photoluminescence in graphene quantum dots

In situ evidence of the redox state dependence of photoluminescence in graphene quantum dots

... These techniques provide information about the dependence of the optical properties of these materials on the applied potential, the effect of electrochemical charge injection and removal to/from the nanomaterial and ...

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Biological phosphorylated molecules participate in the biomimetic and biological synthesis of cadmium sulphide quantum dots by promoting H2S release from cellular thiols

Biological phosphorylated molecules participate in the biomimetic and biological synthesis of cadmium sulphide quantum dots by promoting H2S release from cellular thiols

... Biological phosphorylated molecules participate in the biomimetic and biological synthesis of cadmium sulphide quantum dots by promoting H2S release from cellular thiols RSC Advances PAPER O pe n A cc[.] ...

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Phosphate favors the biosynthesis of CdS quantum dots in Acidithiobacillus thiooxidans ATCC 19703 by improving metal uptake and tolerance

Phosphate favors the biosynthesis of CdS quantum dots in Acidithiobacillus thiooxidans ATCC 19703 by improving metal uptake and tolerance

... Recently, we reported the production of Cadmium sulfide (CdS) fluorescent semiconductor nanoparticles (quantum dots, QDs) by acidophilic bacteria of the Acidithiobacillus genus. Here, we report that the ...

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Dominant channels of exciton spin relaxation in photoexcited self assembled (In,Ga)As quantum dots

Dominant channels of exciton spin relaxation in photoexcited self assembled (In,Ga)As quantum dots

... (Received 15 October 2010; revised manuscript received 2 March 2011; published 22 April 2011) We present a comprehensive theoretical investigation of spin relaxation processes of excitons in photoexcited self-assembled ...

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Self-assembled MgxZn1−xO quantum dots (0 ≤ x ≤ 1) on different substrates using spray pyrolysis methodology

Self-assembled MgxZn1−xO quantum dots (0 ≤ x ≤ 1) on different substrates using spray pyrolysis methodology

... 4 Quantum con- finement effects modify the profile of density of states in quantum dots so that the transfer integral at the band-edge enhances much higher than in bulk or quantum wells, ...

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Electrons, holes, and excitons in GaAs polytype quantum dots

Electrons, holes, and excitons in GaAs polytype quantum dots

... phase quantum dots are developed and used to assess ongoing experimental activity on the role of such factors as quan- tum confinement, spontaneous polarization, valence band mixing and exciton Coulomb ...

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