Results 21 to 30 of about 8,462 (239)

A Unified Approach for modeling and control of crystallization of quantum dots (QDs)

open access: yesDigital Chemical Engineering, 2023
Recently, quantum dots (QDs) have garnered significant attention due to their superior photoelectronic properties, and widespread applications in high-resolution displays and solar cells. Generally, the optoelectronic properties of QDs are majorly dictated by their bandgap energy (related to their size).
Niranjan Sitapure, Joseph Sang-Il Kwon
openaire   +2 more sources

Kerr nonlinearity enhancement by double tunnelling from quantum dot nanostructure

open access: yesResults in Physics, 2016
A model of the dynamical equations of the density matrix describes double tunnelling between double quantum dot (QD) system states, this is to study Kerr nonlinearity in QD structure.
B. Al-Nashy   +2 more
doaj   +1 more source

Cellular uptake of aptamer by Quantum Dots (QDs) [PDF]

open access: yesBiomarkers and Drug Discovery, 2018
Aptamers are short single stranded oligonucleotide sequences that exhibit high binding affinity and high specificity against their target molecule. Binding affinity and specificity are crucial features for aptamers in order to exploit their therapeutic and diagnostic potential and to make them an appealing candidate for the commercial market1,2 ...
openaire   +1 more source

Peptide-Conjugated Quantum Dots Act as the Target Marker for Human Pancreatic Carcinoma Cells

open access: yesCellular Physiology and Biochemistry, 2016
Background/Aims: In the present study, we describe a novel and straightforward approach to produce a cyclic- arginine-glycine-aspartic (RGD)-peptide-conjugated quantum dot (QD) probe as an ideal target tumor biomarker.
Shuang-ling Li   +6 more
doaj   +1 more source

Parallel Quantum Computation of Vibrational Dynamics

open access: yesFrontiers in Physics, 2020
The vibrational dynamics in a linear triatomic molecule is emulated by a quantum information processing device operating in parallel. The quantum device is an ensemble of semiconducting quantum dot dimers addressed and probed by ultrafast laser pulses in
Ksenia Komarova   +6 more
doaj   +1 more source

Refractive index change in a double quantum dot structure

open access: yesResults in Optics
The density matrix theory models the refractive index change in a double quantum dot (DQD) system. The orthogonalized plane wave (OPW) is considered for wetting layer (WL)-quantum dot (QD) transitions, and the transition momenta are calculated.
Suha Hadi   +4 more
doaj   +1 more source

Analysis and Simulation of the Optical Properties of a Quantum Dot on a Graphene Nanoribbon System

open access: yesPhotonics, 2022
In this work, we theoretically study the optical properties of a graphene nanoribbon with a quantum dot (QD) on it. The system consists of a graphene nanoribbon with dimensions of 400 × 3100 (nm2) and a quantum dot with a nanoscale radius.
Sahar Armaghani   +2 more
doaj   +1 more source

Effect of cubic and spherical quantum dot size and size dispersion on the performance of quantum dot solar cells

open access: yesAIP Advances
We investigated the effect of cubic and spherical quantum dot size and size dispersion (size non-uniformity) on the absorption coefficient of a quantum dot ensemble.
Tewodros Adaro Gatissa   +2 more
doaj   +1 more source

Breakthroughs in Photonics 2014: Time-Scale-Dependent Nonlinear Dynamics in InAs/InP Quantum Dot Gain Media: From High-Speed Modulation to Coherent Light–Matter Interactions

open access: yesIEEE Photonics Journal, 2015
The dynamical properties of InP-based quantum dot (QD) gain media are surveyed and analyzed for three time scales ranging from tens of picoseconds to less than 200 fs, where quantum coherent phenomena are observable.
G. Eisenstein   +7 more
doaj   +1 more source

Pressure‐Assisted Dimensional Transformation of 2D Hydrogenated Borophene into 0D Boron Quantum Dots

open access: yesAdvanced Functional Materials, EarlyView.
Hydrogenated borophene (HB) is transformed into distinct boron nanostructures through a solvent‐free thermal process. Under flowing nitrogen, hydrogen escape promotes reconstruction into B2O3 nanoplatelets, whereas hydrogen‐induced pressure under sealed conditions facilitates fragmentation into boron quantum dots.
Ozden Gunes Yildiz   +11 more
wiley   +1 more source

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