Results 71 to 80 of about 1,223,675 (304)

Planar Photonic Crystal Nanocavities with Active Quantum Nanostructures [PDF]

open access: yes, 2004
Extreme photon localization is applicable to constructing building blocks in photonic systems and quantum information systems. A finding fact that photon localization in small space modifies the radiation process was reported in 1944 by Purcell, and ...
Yoshie, Tomoyuki
core   +1 more source

Synthesis Approaches of Magnetic Quantum Dots

open access: yes, 2023
Magnetic nanoparticles around 10-20 nm play a role as a single magnetic domain and attract interest for biomedical applications due to their superparamagnetic properties above blocking temperature.
Çamlibel, N.O., Nurhan Onar Çamlıbel
core   +1 more source

One-step synthesis of sulfur quantum dots in the presence of primary, secondary, and tertiary amines

open access: yesChimica Techno Acta
Quantum dots synthesized on the metal basis and the materials covering them can be immunogenic, which can lead to dangerous consequences for the research objects. It is possible to avoid these limitations by using metal-free quantum dots. Among the known
Dmitriy Shurpik   +3 more
doaj   +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

Circularly Polarized Electroluminescence and Spin‐Polarized Carrier Transport in Chiral‐Doped Polymer Films

open access: yesAdvanced Functional Materials, EarlyView.
Chiral dopants induce supramolecular chirality in an achiral polymer (PFO), generating spin‐polarized carriers via the chiral‐induced spin selectivity (CISS) and suggesting a possible contribution of Spin‐polarized carrier transport to circularly polarized electroluminescence (CPEL).
Kazuyuki Asahi   +4 more
wiley   +1 more source

A New Strategy for Creating Quantum Light Emitters Via Post‐Growth Hydrogen‐Ion Irradiation of III‐V Nanowires

open access: yesAdvanced Functional Materials, EarlyView.
A post‐growth method is demonstrated to realize energy‐tunable quantum emitters in GaAs/GaAsN/GaAs core–multishell nanowires on a Si substrate. By combining the N‐induced bandgap reduction with H‐ion irradiation, the GaAsN potential landscape is engineered, enabling isolated, narrow emission lines that function as single‐photon sources with g(2)(0) ∼ 0.
Akant Sagar Sharma   +10 more
wiley   +1 more source

Excitation, dynamics and dephasing in quantum dots [PDF]

open access: yes, 1998
This paper concerns the femtosecond dynamical relaxation of excited states in quantum dots or clusters. The clusters are typically polar, consisting of 150-200 atoms, and are of interest for potential photonic devices.
McKinnon, BA, Stoneham, AM
core  

Charge noise and spin noise in a semiconductor quantum device [PDF]

open access: yes, 2014
Self-assembled quantum dots are very attractive as the building blocks for quantum light sources and spin qubits. For instance, a single quantum dot is a robust, fast, narrow-linewidth source of single photons, features not shared by any other ...
Kuhlmann, Andreas V.
core   +1 more source

Interaction of Water-Soluble CdTe Quantum Dots with Bovine Serum Albumin

open access: yesNanoscale Research Letters, 2011
Semiconductor nanoparticles (quantum dots) are promising fluorescent markers, but it is very little known about interaction of quantum dots with biological molecules.
Matulionyte Marija   +3 more
doaj  

Surface-enhanced ZnS:Ag quantum dots scintillator

open access: yesAIP Advances, 2019
Surface-enhanced ZnS: Ag quantum dots scintillator has been manufactured by coupling quantum dots and dendritic silver surface-enhanced substrates. Four-fold enhancement of the fluorescence intensity was achieved compare to the undoped quantum dots ...
Hao Sun   +5 more
doaj   +1 more source

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