Results 41 to 50 of about 141,288 (236)

A tecnologia do motor elétrico para o ensino de Eletromagnetismo numa abordagem problematizadora

open access: yesRevista Brasileira de Ensino de Ciência e Tecnologia, 2014
Neste trabalho discutimos o desenvolvimento de aulas dialógicas e problematizadas por meio de um objeto tecnológico com o objetivo de investigar suas contribuições para o ensino de Eletromagnetismo. Para tanto desenvolvemos a estratégia dos três momentos
Cristina Fátima de Jesus Silva Pires   +2 more
doaj   +1 more source

Photoluminescence enhancement by deterministically site-controlled, vertically stacked SiGe quantum dots

open access: yesScientific Reports, 2021
The Si/SiGe heterosystem would be ideally suited for the realization of complementary metal-oxide-semiconductor (CMOS)-compatible integrated light sources, but the indirect band gap, exacerbated by a type-II band offset, makes it challenging to achieve ...
Jeffrey Schuster   +7 more
doaj   +1 more source

QD-Based FRET Probes at a Glance

open access: yes, 2015
The unique optoelectronic properties of quantum dots (QDs) give them significant advantages over traditional organic dyes, not only as fluorescent labels for bioimaging, but also as emissive sensing probes.
Armen Shamirian   +6 more
core   +1 more source

Embedding PbS Quantum Dots (QDs) in Pb-Halide Perovskite Matrices: QD Surface Chemistry and Antisolvent Effects on QD Dispersion and Confinement Properties

open access: yes, 2020
Hybrid materials of metal chalcogenide colloidal quantum dots (QDs) embedded in metal halide perovskites (MHPs) have led to composites with synergistic properties.
E. A. Gaulding   +8 more
semanticscholar   +1 more source

Perovskite quantum dot lasers

open access: yesInfoMat, 2020
Owing to the excellent properties of perovskite quantum dots (QDs), such as an easy synthesis process, high photoluminescence quantum yields, high defect tolerance, and tunable bandgap with different elements, laser actions have been widely conducted ...
Jie Chen   +6 more
doaj   +1 more source

Gas Sensitivity of In0.3Ga0.7As Surface QDs Coupled to Multilayer Buried QDs [PDF]

open access: yesPhotonic Sensors, 2020
Abstract A detailed analysis of the electrical response of In 0.3 Ga 0.7 As surface quantum dots (SQDs) coupled to 5-layer buried quantum dots (BQDs) is carried out as a function of ethanol and acetone concentration while temperature ...
Liwei Zhang   +7 more
openaire   +3 more sources

QD-AMVA: Evaluating Systems with Queue-Dependent Service Requirements - Data

open access: yes, 2015
<p>The data part of this release support the results <br /> presented in the paper <br /> "QD-AMVA: Evaluating Systems with Queue-Dependent Service<br /> Requirements", by G. Casale, J. F. Perez, and W.
Wang, Weikun (5241934)   +5 more
core   +1 more source

Growth and function of equine endothelial colony forming cells labeled with semiconductor quantum dots

open access: yesBMC Veterinary Research, 2018
Background Endothelial progenitor cells (EPCs) contribute to neovascularization and vascular repair in vivo and are attractive for clinical use in ischemic disease.
Randolph L. Winter   +5 more
doaj   +1 more source

Modelling charge transport and electro-optical characteristics of quantum dot light-emitting diodes

open access: yesnpj Computational Materials, 2021
s Quantum dot light-emitting diodes (QD-LEDs) are considered as competitive candidate for next-generation displays or lightings. Recent advances in the synthesis of core/shell quantum dots (QDs) and tailoring procedures for achieving their high quantum ...
Sung-Min Jung   +16 more
doaj   +1 more source

qd-Type Methods for Quasiseparable Matrices [PDF]

open access: yesSIAM Journal on Matrix Analysis and Applications, 2011
In the last few years many numerical techniques for computing eigenvalues of structured rank matrices have been proposed. Most of them are based on QR iterations since, in the symmetric case, the rank structure is preserved and high accuracy is guaranteed.
Roberto Bevilacqua   +2 more
openaire   +3 more sources

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