Publication

First-principles simulation of vitreous systems

Alfredo Pasquarello
2001
Journal Articles

Abstract

Recent developments in the field of first-principles simulation applied to vitreous systems are reviewed. Starting from first-principles molecular dynamics as a basic tool for the generation of structural models, this paper describes how, in recent years, the scope of first-principles methods has extended to the interpretation of vibrational spectra of glasses. (C) 2002 Elsevier Science Ltd. All rights reserved.

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Alfredo Pasquarello
2001
Journal Articles

Abstract

Official source

Related concepts (18)

Molecular dynamics

Molecular dynamics (MD) is a computer simulation method for analyzing the physical movements of atoms and molecules. The atoms and molecules are allowed to interact for a fixed period of time, giving a view of the dynamic "evolution" of the system. In the most common version, the trajectories of atoms and molecules are determined by numerically solving Newton's equations of motion for a system of interacting particles, where forces between the particles and their potential energies are often calculated using interatomic potentials or molecular mechanical force fields.

Structural biology

Structural biology is a field that is many centuries old which, as defined by the Journal of Structural Biology, deals with structural analysis of living material (formed, composed of, and/or maintained and refined by living cells) at every level of organization. Early structural biologists throughout the 19th and early 20th centuries were primarily only able to study structures to the limit of the naked eye's visual acuity and through magnifying glasses and light microscopes.

Rotational–vibrational spectroscopy

Rotational–vibrational spectroscopy is a branch of molecular spectroscopy concerned with infrared and Raman spectra of molecules in the gas phase. Transitions involving changes in both vibrational and rotational states can be abbreviated as rovibrational (or ro-vibrational) transitions. When such transitions emit or absorb photons (electromagnetic radiation), the frequency is proportional to the difference in energy levels and can be detected by certain kinds of spectroscopy.