Results 11 to 20 of about 93,580 (281)

Quantum dissipation driven by electron transfer within a single molecule investigated with atomic force microscopy

open access: yesNature Communications, 2020
Here, the authors use atomic force microscopy under ultra-high vacuum conditions to study intramolecular single electron transfer within a single molecule.
Jan Berger   +10 more
doaj   +1 more source

Development of an Electron-Atom Compton Scattering Apparatus Using a Picosecond Pulsed Electron Gun

open access: yesAtoms, 2021
An apparatus has been developed for electron-atom Compton scattering experiments that can employ a pulsed laser and a picosecond pulsed electron beam in a pump-and-probe scheme. The design and technical details of the apparatus are described. Furthermore,
Yuichi Tachibana   +3 more
doaj   +1 more source

Analysis of the conformational profiles of fenamates shows route towards novel, higher accuracy, force-fields for pharmaceuticals [PDF]

open access: yes, 2015
In traditional molecular mechanics force fields, intramolecular non-bonded interactions are modelled as intermolecular interactions, and the form of the torsion potential is based on the conformational profiles of small organic molecules.
Galek, P, Price, SL, Uzoh, OG
core   +1 more source

Simulation of borosilicate glasses with non-constant force field molecular dynamics

open access: yesChimica Techno Acta, 2018
In this study the simulation of microscopical behavior of borosilicate glasses was conducted with non-constant force field molecular dynamics. The suggested model consists of classical pair potentials in the Buckingham form, long range Coulomb ...
Anton A. Raskovalov
doaj   +1 more source

Quantum Zeno Suppression of Intramolecular Forces [PDF]

open access: yesPhysical Review Letters, 2017
We show that Born-Oppenheimer surfaces can intrinsically decohere, implying loss of coherence among constituent electronic basis states. We consider the example of interatomic forces due to resonant dipole-dipole interactions within a dimer of highly excited Rydberg atoms, embedded in an ultracold gas.
openaire   +5 more sources

Microscopic mechanisms of thermal and driven diffusion of non rigid molecules on surfaces [PDF]

open access: yes, 2002
The motion of molecules on solid surfaces is of interest for technological applications such as catalysis and lubrication, but it is also a theoretical challenge at a more fundamental level.
A. Fasolino   +19 more
core   +2 more sources

Vibrational Assignments and Intramolecular Force Field of Trimethylaluminum [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1965
Abstract A vacuum infrared cell for reactive or intermediate species has been devised by the use of polyethylene sheets as optical windows. The infrared spectra in the 4000–3100cm−1, 2500–1500 cm−1, 1250–750 cm−1 and 700–65 cm−1 regions can be measured with this liquid cell.
Teiichiro Ogawa   +2 more
openaire   +1 more source

Molecular Dynamics of CH4/N2 Mixtures on a Flexible Graphene Layer: Adsorption and Selectivity Case Study

open access: yesFrontiers in Chemistry, 2019
We theoretically investigate graphene layers, proposing them as membranes of subnanometer size suitable for CH4/N2 separation and gas uptake. The observed potential energy surfaces, representing the intermolecular interactions within the CH4/N2 gaseous ...
Jelle Vekeman   +8 more
doaj   +1 more source

Pauli's Principle in Probe Microscopy [PDF]

open access: yes, 2014
Exceptionally clear images of intramolecular structure can be attained in dynamic force microscopy through the combination of a passivated tip apex and operation in what has become known as the "Pauli exclusion regime" of the tip-sample interaction.
A Riss   +47 more
core   +2 more sources

NMR-Based Configurational Assignments of Natural Products: Gibbs Sampling and Bayesian Inference Using Floating Chirality Distance Geometry Calculations

open access: yesMarine Drugs, 2021
Floating chirality restrained distance geometry (fc-rDG) calculations are used to directly evolve structures from NMR data such as NOE-derived intramolecular distances or anisotropic residual dipolar couplings (RDCs).
Stefan Immel   +2 more
doaj   +1 more source

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