Results 31 to 40 of about 71,683 (272)

Skew-Symmetric Differential qd Algorithm [PDF]

open access: yesApplied Numerical Analysis & Computational Mathematics, 2005
Differential qd (dqd) algorithm with shifts is probably the fastest known algorithm which computes eigenvalues of symmetric tridiagonal matrices with high relative accuracy. In this paper we will construct a similar algorithm for computing eigenvalues of skew-symmetric matrices, which is based on implicit usage of both the QR and the symplectic QR ...
Singer, Sanja, Singer, Saša
openaire   +2 more sources

Atomistic pseudopotential calculations of the optical properties of InAs/InP self-assembled quantum dots

open access: yes, 2010
We present a comprehensive study of the optical properties of InAs/InP self-assembled quantum dots (QDs) using an empirical pseudopotential method and configuration interaction treatment of the many-particle effects.
Gong, Ming   +4 more
core   +1 more source

Intervalley coupling by quantum dot confinement potentials in monolayer transition metal dichalcogenides [PDF]

open access: yes, 2014
Monolayer transition metal dichalcogenides (TMDs) offer new opportunities for realizing quantum dots (QDs) in the ultimate two-dimensional (2D) limit. Given the rich control possibilities of electron valley pseudospin discovered in the monolayers, this ...
Liu, Gui-Bin   +3 more
core   +2 more sources

Carrier Dynamics in Submonolayer InGaAs/GaAs Quantum Dots [PDF]

open access: yes, 2006
Carrier dynamics of submonolayer (SML) InGaAs/GaAs quantum dots (QDs) were studied by micro-photoluminecence (MPL), selectively excited photoluminescence (SEPL), and time-resolved photoluminescence (TRPL).
Bimberg D.   +7 more
core   +2 more sources

Improving the thermal resistance of fluorescent CsPb(Br,I)3 perovskite quantum dots by surface modification with perfluorodecanoic acid

open access: yesRoyal Society Open Science, 2022
CsPb(Br,I)3 quantum dots (QDs) show application potential for optoelectronic devices. However, their thermal degradation is a significant problem. In this work, the effects of perfluorodecanoic acid (PFDA) modification on the photoluminescence (PL) and ...
Yoshiki Iso   +4 more
doaj   +1 more source

QD floating gate NVRAM using QD channel for faster erasing [PDF]

open access: yesElectronics Letters, 2018
A new pathway to design floating gate quantum dot (QD) non‐volatile RAM (QDNVRAM) cells that possess high‐speed low‐voltage Erase capabilities not possible with conventional floating gate NV memories is presented. This is achieved by directly accessing the QD floating gate layer with an additional drain (D2) during the Erase operation.
M. Lingalugari   +4 more
openaire   +1 more source

Research Update: Strain and composition effects on ferromagnetism of Mn0.05Ge0.95 quantum dots

open access: yesAPL Materials, 2016
Mn0.05Ge0.95 quantum dots (QDs) samples were grown by molecular beam epitaxy on Si substrates and 15-nm-thick fully strained Si0.8Ge0.2 virtual substrates, respectively.
Liming Wang   +10 more
doaj   +1 more source

Synthesis of core/shell quantum dots for diagnostic [PDF]

open access: yes, 2014
In this paper, synthesis of colloidal core and core/shell quantum dots (QDs) was described. First, CdTe QDs capped with glutathione, thioglycolic or mercaptopropionic acid were prepared in aqueous phase, and used for synthesis of colloidal core/shell ...
Mihajlovic, A.
core  

Tuning the onset voltage of resonant tunneling through InAs quantum dots by growth parameters [PDF]

open access: yes, 2002
We investigated the size dependence of the ground state energy in self-assembled InAs quantum dots embedded in resonant tunneling diodes. Individual current steps observed in the current-voltage characteristics are attributed to resonant single-electron ...
Hapke-Wurst, I.   +5 more
core   +4 more sources

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

open access: yesAdvanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

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