Results 31 to 40 of about 631,655 (244)

TAO-DFT-Based Ab Initio Molecular Dynamics

open access: yesFrontiers in Chemistry, 2020
Recently, AIMD (ab initio molecular dynamics) has been extensively employed to explore the dynamical information of electronic systems. However, it remains extremely challenging to reliably predict the properties of nanosystems with a radical nature ...
Shaozhi Li, Jeng-Da Chai, Jeng-Da Chai
doaj   +1 more source

A Review of Solid-Solution Models of High-Entropy Alloys Based on Ab Initio Calculations

open access: yesFrontiers in Materials, 2017
Similar to the importance of XRD in experiments, ab initio calculations, as a powerful tool, have been applied to predict the new potential materials and investigate the intrinsic properties of materials in theory.
Fuyang Tian
doaj   +1 more source

Reconciling ionization energies and band gaps of warm dense matter derived with ab initio simulations and average atom models

open access: yesPhysical Review Research, 2021
Average atom (AA) models allow one to efficiently compute electronic and optical properties of materials over a wide range of conditions and are often employed to interpret experimental data.
G. Massacrier   +4 more
doaj   +1 more source

Ab initio molecular dynamics benchmarking study of machine-learned potential energy surfaces for the HBr+ + HCl reaction

open access: yesCarbon Trends, 2023
Machine learning has grown in use for constructing potential energy surfaces for their ability to theoretically recreate any function given enough training as well as their fast predictive powers after being trained.
Kazuumi Fujioka   +3 more
doaj   +1 more source

HHG probing of atomic dipoles by electronic wave-packet caustics [PDF]

open access: yesEPJ Web of Conferences, 2019
We exploit high-order harmonic generation spectroscopy at the caustics of the recombining electron wave-packet as a method for directly comparing experimental spectra with ab-initio theories.
Faccialà Davide   +9 more
doaj   +1 more source

Ab initio characterization of C5 [PDF]

open access: yesThe Journal of Chemical Physics, 2007
In this paper, the structure and spectroscopic parameters of the C5 cluster are determined using multiconfigurational quantum chemical methods as implemented in the MOLCAS software. A number of spectroscopic properties (band center positions, l-doubling parameters, and rotational constants) have been characterized. From the new results, the assignments
Massó, Helena   +4 more
openaire   +3 more sources

Ab initio nuclear theory for heavy nuclei and its application to dark matter-nucleus scattering

open access: yesFrontiers in Physics
The era of precision ab initio nuclear theory has arrived, enabling uncertainty-quantified predictions for nuclear structure and for interactions with external probes directly from the underlying nuclear force and electroweak currents.
Bai-Shan Hu
doaj   +1 more source

Ab initioRNA folding [PDF]

open access: yesJournal of Physics: Condensed Matter, 2015
RNA molecules are essential cellular machines performing a wide variety of functions for which a specific three-dimensional structure is required. Over the last several years, experimental determination of RNA structures through X-ray crystallography and NMR seems to have reached a plateau in the number of structures resolved each year, but as more and
Cragnolini, Tristan   +2 more
openaire   +3 more sources

Modeling the high-temperature phase coexistence region of mixed transition metal oxides from ab initio calculations

open access: yesPhysical Review Research, 2021
Accurate knowledge of phase coexistence regions, i.e., solubility gaps (SGs), is key to the development of mixed transition metal oxides for various applications, such as thermochemical energy storage, or catalysis.
Suzanne K. Wallace   +5 more
doaj   +1 more source

Ab initiopotential for solids [PDF]

open access: yesPhysical Review B, 1992
A total-energy theory for a solid is presented. It is based on density-functional theory and consists of a succession of approximations. At the most accurate level, the theory consists of a systematic derivation of an ansatz for the electron density which is best suited for the Harris functional.
Chetty, N.   +3 more
openaire   +3 more sources

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