Molecular and Ionic Interactions at the Oil/Water Interface as Measured by Surface Second Harmonic Generation and Sum-Frequency Generation.

Abstract

Direct measurement of molecular properties of these fluid interfacial regions remains a challenging task. In recent years we have been applying two techniques to such problems, surface second harmonic generation (SHG) and sum-frequency generation (SFG). The success that we have had in making measurements of the structural and molecular properties of a variety of neat hydrocarbon/water interfaces and dichloroethane/water interfaces has come from employing a total intenal reflection geometry (TIR). We have examined interfacial order, molecular orientation and ionic adsorption at various of water interfaces with TIR SHG and TIR SFG. The results provide a valuable insight into how molecules and ions interact at these fluid interfaces.

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Document Details

Document Type
Technical Report
Publication Date
Jun 12, 1995
Accession Number
ADA295107

Entities

People

  • Geraldine L. Richmond
  • John C. Conboy
  • Marie C. Messmer

Organizations

  • University of Oregon

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Abstracts
  • Adsorption
  • Chemistry
  • Demographic Cohorts
  • Fluids
  • Frequency
  • Geometry
  • Hydrocarbons
  • Light Sources
  • Measurement
  • Military Research
  • Molecules
  • Orientation (Direction)
  • Polarization
  • Reflection
  • Refractive Index
  • Second Harmonic Generation

Readers

  • Aerodynamics.
  • Electrochemical Engineering/ Fuel Cell Technologies
  • Military History of the United States in the 20th Century.