Results 91 to 100 of about 2,529,540 (368)
Luminescence Spectra of a Quantum-Dot Cascade Laser [PDF]
, 2000 A quantum cascade laser where the quantum wells in the active regions are replaced by quantum dots with their atom-like discrete energy levels is an interesting system to study novel features in optical spectroscopy. We study structures suitable for diagonal lasing transitions in coupled dots, and vertical lasing transitions in a single dot, in the ...
arxiv +1 more source
Advanced Functional Materials, EarlyView.This study introduces an extracorporeal hemoperfusion system incorporating porous microbeads embedded with autocatalytic ceria nanoparticles (CeNPs) for targeted reactive oxygen species (ROS) scavenging in septic shock. The blood‐compatible hemoperfusion cartridge demonstrated significant improvements in survival, hemodynamic stability, and organ ...
Pilseon Im +10 more
wiley +1 more source
Band Modulation for Silicene and Graphene Quantum Dots: A First-Principles Calculation [PDF]
arXiv, 2018 The band modulation of the silicene and graphene quantum dots is investigated by a first-principles method. This study includes the ordinary silicene and graphene quantum dots and the embedded quantum dots in the hydrogenated silicene and graphene. The shapes and sizes of quantum dots are recognized as important factors for the electronic properties ...
arxiv
Improved performance and stability in quantum dot solar cells through band alignment engineering
Nature Materials, 2014 Solution processing is a promising route for the realization of low-cost, large-area, flexible and lightweight photovoltaic devices with short energy payback time and high specific power.
C. Chuang +3 more
semanticscholar +1 more source
Physics Letters BWe determine the frequency ratios $τ\equiv ω_z/ω_ρ$ for which the Hamiltonian system with a potential \[ V=\frac{1}{r}+\frac{1}{2}\Big({ω_ρ}^2(x^2+y^2)+{ω_z}^2 z^2\Big) \] is completely integrable. We relate this result to the existence of conformal Killing tensors of the associated Eisenhart metric on $\mathbb{R}^{1, 4}$.
Maciej Dunajski +2 more
openaire +3 more sources
Theory of polaron resonance in quantum dots and quantum-dot molecules [PDF]
Journal of Applied Physics, 2007 This work presents the theory of exciton coupling to photons and longitudinal optical (LO) phonons in quantum dots (QDs) and quantum-dot molecules (QDMs). Resonant-round trips of the exciton between the ground (bright) and excited (dark or bright) states, mediated by the LO phonon, alter the decay time and yield the Rabi oscillation.
openaire +4 more sources
Designing quantum dots for solotronics [PDF]
Nature Communications, 2014 AbstractSolotronics, optoelectronics based on solitary dopants, is an emerging field of research and technology reaching the ultimate limit of miniaturization. It aims at exploiting quantum properties of individual ions or defects embedded in a semiconductor matrix. It has already been shown that optical control of a magnetic ion spin is feasible using
E. Janik +13 more
openaire +4 more sources
Advanced Functional Materials, EarlyView.This work presents an overview of the PTC‐VMD system for water‐hydrogen co‐generation. a) Illustration of the hydrogel‐based PTC membrane and the co‐generation of water and hydrogen. b) Structure of the PTC‐VMD system and the functions of each component layer.
Jiawei Sun +7 more
wiley +1 more source
Supercurrent in a Double Quantum Dot [PDF]
Physical Review Letters, 2018 6 pages, 5 figures, Supplemental Material available as ancillary ...
Jens Paaske +8 more
openaire +4 more sources
Advanced Functional Materials, EarlyView.A coordination polymer [Pb(tadt)]n prepared by a microwave‐assisted solvothermal method selectively reduces CO2 into formate under visible light with a high apparent quantum yield of ≈25% at 400 nm. It can function as a pre‐catalyst, along with conductive Ketjen Black, to form an active PbCO3/Pb3(CO3)2(OH)2 mixture that exhibits a high Faradaic ...
Chomponoot Suppaso +8 more
wiley +1 more source