Results 21 to 30 of about 24,701,591 (295)

Illuminating mechanochemical reactions by combining real-time fluorescence emission monitoring and periodic time-dependent density-functional calculations [PDF]

open access: yes, 2021
We provide a proof-of-principle demonstration of the first dual-spectroscopic method for direct and real-time observation of mechanochemical reactions by ball milling, supported by high-level molecular and periodic density-functional theory (DFT ...
Patrick A., Julien   +6 more
core   +2 more sources

Can We See the Energy Densities? I. Insights from Real-Time Time-Dependent Density Functional Theory Simulations [PDF]

open access: yes, 2020
In this work, we report a scheme to evaluate and analysis of energy density fluctuations during the real-time time-dependent density functional theory (RT-TDDFT) simulations.
Qin, Wu   +9 more
core   +1 more source

Progress in Time-Dependent Density-Functional Theory [PDF]

open access: yesAnnual Review of Physical Chemistry, 2012
The classic density-functional theory (DFT) formalism introduced by Hohenberg, Kohn, and Sham in the mid-1960s is based on the idea that the complicated N-electron wave function can be replaced with the mathematically simpler 1-electron charge density in electronic structure calculations of the ground stationary state.
Casida, M. E., Huix-Rotllant, M.
openaire   +4 more sources

Time-dependent density-functional theory for superfluids [PDF]

open access: yesEurophysics Letters (EPL), 2001
A density-functional theory is established for inhomogeneous superfluids at finite temperature, subject to time-dependent external fields in isothermal conditions. After outlining parallelisms between a neutral superfluid and a charged superconductor, Hohenberg-Kohn-Sham-type theorems are proved for gauge-invariant densities and a set of Bogolubov ...
CHIOFALO, MARIA LUISA, Tosi MP
openaire   +3 more sources

A Natural Orbital Branching Scheme for Time Dependent Density Functional Theory Nonadiabatic Simulations [PDF]

open access: yes, 2020
Real time time dependent density functional theory (rt-TDDFT) has now been used to study a wide range of problems, from optical excitation, to charge transfer, to ion collision, to ultrafast phase transition.
Lin-Wang, Wang
core   +2 more sources

Time Evolution of Plasmonic Features in Pentagonal Ag Clusters

open access: yesMolecules, 2023
In the present work, we apply recently developed real-time descriptors to study the time evolution of plasmonic features of pentagonal Ag clusters. The method is based on the propagation of the time-dependent Schrödinger equation within a singly excited ...
Nicola Domenis   +5 more
doaj   +1 more source

Time Dependent- Density Functional Theory calculations on frequency-dependent photophysical properties of 2, 3-diphenylcyclopropenone

open access: yesFountain Journal of Natural and Applied Sciences (FUJNAS), 2017
Time Dependent Density Functional Theory (TD-DFT/B3LYP/6-31G*) calculations have been performed on the optimized structure of 2, 3-diphenylcyclopropenone (DPCP) in the UV region of the spectra; giving energies, oscillator strength, dipole moment, µ and ...
N. O. Obi-Egbedi, M. D. Adeoye
doaj   +3 more sources

Non-adiabatic approximations in time-dependent density functional theory: progress and prospects

open access: yesnpj Computational Materials, 2023
Time-dependent density functional theory continues to draw a large number of users in a wide range of fields exploring myriad applications involving electronic spectra and dynamics.
Lionel Lacombe, Neepa T. Maitra
doaj   +1 more source

Autoionizing resonances in time-dependent density functional theory [PDF]

open access: yesPhysical Chemistry Chemical Physics, 2009
Autoionizing resonances that arise from the interaction of a bound single-excitation with the continuum can be accurately captured with the presently used approximations in time-dependent density functional theory (TDDFT), but those arising from a bound double excitation cannot.
Krueger, August J., Maitra, Neepa T.
openaire   +3 more sources

Modeling of plasmonic properties of nanostructures for next generation solar cells and beyond

open access: yesAdvances in Physics: X, 2021
Plasmonic particles and nanostructures are widely used in photovoltaic and photonics. Surface plasmons were found to enhance different types of solar cells including plasmonic DSSCs, plasmonic solid semiconductor solar cells, plasmonic organic solar ...
Sergei Manzhos   +3 more
doaj   +1 more source

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