Results 71 to 80 of about 2,144,094 (388)

Tunable Indistinguishable Photons From Remote Quantum Dots

open access: yes, 2009
Single semiconductor quantum dots have been widely studied within devices that can apply an electric field. In the most common system, the low energy offset between the InGaAs quantum dot and the surrounding GaAs material limits the magnitude of field ...
A Bennett   +32 more
core   +1 more source

Hydrogel‐Based Photothermal‐Catalytic Membrane for Efficient Cogeneration of Freshwater and Hydrogen in Membrane Distillation System

open access: yesAdvanced 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

Simple Synthesis Method and Characterizations of Aggregation-Free Cysteamine Capped PbS Quantum Dot

open access: yesApplied Sciences, 2019
Quantum dots have diverse chemical properties with different ligands attached on the surface. The cysteamine has been used as a ligand for various quantum dots because it has high solubility in water, and it facilitates binding of quantum dot and gold ...
Daekyung Kang   +4 more
doaj   +1 more source

Nonlinear Optical Properties of CdSe and CdTe Core-Shell Quantum Dots and Their Applications

open access: yesFrontiers in Physics, 2021
The strong nonlinear optical behavior of low-dimensional materials, such as quantum dots and core-shell quantum dots, has been a topic of intense research in recent years.
Um e Kalsoom   +3 more
doaj   +1 more source

Energy levels of few electron quantum dots imaged and characterized by atomic force microscopy

open access: yes, 2009
Strong confinement of charges in few electron systems such as in atoms, molecules and quantum dots leads to a spectrum of discrete energy levels that are often shared by several degenerate quantum states.
A. A. Clerk   +19 more
core   +3 more sources

Probing the Cytotoxicity Of Semiconductor Quantum Dots.

open access: yesNano letters (Print), 2004
With their bright, photostable fluorescence, semiconductor quantum dots show promise as alternatives to organic dyes for biological labeling. Questions about their potential cytotoxicity, however, remain unanswered.
A. M. Derfus, W. Chan, S. Bhatia
semanticscholar   +1 more source

Deciphering the Origin of Higher Shell Coordination on Single Iron Catalysts for Resilient Modulating Persulfate Oxidation Into Singlet Oxygen Pathway

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
This study reveals that higher shell S coordination can effectively modulate the spin state of FeN4 site via long‐range electronic interactions, giving rise to the oriented generation of singlet oxygen from peroxymonosulfate activation. Abstract Precise manipulation of coordination structure of single‐atom sites and establishment of schematic ...
Liang Zhang   +8 more
wiley   +1 more source

A scalable solid-state quantum computer based on quantum dot pillar structures

open access: yes, 2000
We investigate an optically driven quantum computer based on electric dipole transitions within coupled single-electron quantum dots. Our quantum register consists of a freestanding n-type pillar containing a series of pair wise coupled asymmetric ...
Holton, W. C.   +2 more
core   +1 more source

Intrinsic electric field effects on few-particle interactions in coupled GaN quantum dots [PDF]

open access: yes, 2004
We study the multi-exciton optical spectrum of vertically coupled GaN/AlN quantum dots with a realistic three-dimensional direct-diagonalization approach for the description of few-particle Coulomb-correlated states. We present a detailed analysis of the
D. Bimberg   +7 more
core   +2 more sources

Achieving Large and Anisotropic Spin‐Mediated Thermal Transport in Textured Quantum Magnets

open access: yesAdvanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
An advanced solvent‐cast cold pressing method is developed to synthesize highly textured quantum magnets. By aligning spin chains in Ca2CuO3 perpendicular to the pressing direction, a spin‐mediated thermal conductivity of 10 ± 1 W m⁻¹ K⁻¹ is achieved, the highest reported for polycrystalline quantum materials.
Shucheng Guo   +6 more
wiley   +1 more source

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