Absorption Spectra of Water Clusters Calculated Using Density Functional Theory

Abstract

We present calculations of ground and excited state resonance structure associated with clusters of water molecules that are randomly distributed and in liquid-phase using density functional theory (DFT) and its extension, time-dependent density functional theory (TD-DFT). Calculation of ground and excited state resonance structure using DFT and TD-DFT can provide interpretation of absorption spectra with respect to molecular structure for excitation by electromagnetic waves at frequencies within the IR and UV ranges. The dielectric response of a molecular cluster consisting of a given number of molecules should be associated with response features that are intermediate between that of isolated molecules and that of a bulk lattice. The DFT sofware GAUSSIAN was used for the calculations of ground and excited state resonance structure presented here.

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Document Details

Document Type
Technical Report
Publication Date
Jul 10, 2013
Accession Number
ADA587440

Entities

People

  • Andrew R. Shabaev
  • Lifeng Huang
  • Lorenzo Massa
  • N. Bernstein
  • Samuel G. Lambrakos

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Spectra
  • Cartesian Coordinates
  • Density Functional Theory
  • Detection
  • Electron Density
  • Electrons
  • Geometry
  • Ground State
  • Liquid Phases
  • Materials
  • Materials Science
  • Molecular Dynamics
  • Molecular Structure
  • Quantum Properties
  • Simulations
  • Spectra

Fields of Study

  • Physics

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.
  • Software Engineering.