Journal ArticleDOI
Equilibrium and Dynamic Processes at Interfaces by Second Harmonic and Sum Frequency Generation
Reads0
Chats0
TLDR
In this article, the chemical and physical properties of the interface have been investigated and it was shown that the chemical compositions of an interface and its surrounding are different from either a bulk medium or a liquid medium.Abstract:
Interfaces are ubiquitous. They occur everywhere. They are the boundaries that separate distinct physical and chemical regions of matter. The bulk materials on adjacent sides of the interface can be chemically identical, as with a liquid water/vapor water interface, or they can be chemically different, as at ~t liquid/liquid interface such as hexadecane/water. All transfers of chemical species between the bulk regions must cross the interface. But, aside from mediating all exchanges, the interface has unique chemical and physical properties, which differ from either bulk medium. Because of these properties, the interface has fundamental scientific and technological importance (1). The origin of the distinctive interface properties is the asymmetry in forces that molecules and atomic species experience there, together with the almost, two-dimensional geometry of the interface. These features are manifested in such things as the chemical composition at an interface. For example, even when the water concentration greatly exceeds that of alcohol in a bulk alcohol-water solution, we would find that the composition is almost exclusively alcohol at the vapor/solution interface. As with alcoholwater, the chemical compositions of the interface and the surroundingread more
Citations
More filters
Journal ArticleDOI
Liquid interfaces probed by second-harmonic and sum-frequency spectroscopy
TL;DR: Only liquid interfaces will be considered; gas/solid and solid/solid interfaces are not included; this restriction is necessary because of the enormous increase in SH and SF studies in recent years, which makes it extremely difficult to properly discuss the range of work being carried out around the world.
Journal ArticleDOI
New challenges in biomaterials
Nicholas A. Peppas,Robert Langer +1 more
TL;DR: Approaches for controlling the interface between tissue and biomaterials and ways in which the engineered materials may contribute to medicine are considered.
Journal ArticleDOI
Quantitative spectral and orientational analysis in surface sum frequency generation vibrational spectroscopy (SFG-VS)
TL;DR: In this article, the authors make assessments of the limitations, issues and techniques as well as methodologies in quantitative orientational and spectral analysis with sum frequency generation vibrational spectroscopy (SFG-VS).
Journal ArticleDOI
Sum-frequency vibrational spectroscopy of the solid/liquid interface
TL;DR: Sum-frequency spectroscopy (SFS) is a nonlinear optical technique that yields vibrational spectra of molecules at interfaces as discussed by the authors, and it has been applied to the study of organic molecules at the solid/liquid interface.
Journal ArticleDOI
Liquid interfaces: A study by sum-frequency vibrational spectroscopy
Paulo B. Miranda,Y. R. Shen +1 more
TL;DR: The sum-frequency generation (SFG) technique has been shown to be the only technique available that can provide detailed information about a liquid interface at the molecular level as mentioned in this paper, which has been proven to be a most powerful analytical tool for liquid interfaces.
References
More filters
Book
Physical chemistry of surfaces
TL;DR: In this paper, the authors discuss the nature and properties of liquid interfaces, including the formation of a new phase, nucleation and crystal growth, and the contact angle of surfaces of solids.
Book
Nonlinear surface electromagnetic phenomena
H.-E Ponath,George I. Stegeman +1 more
TL;DR: In this paper, the problem of stability and excitation of nonlinear suface waves was studied and the authors proposed a method to solve it based on the second-order nonlinear guided wave interactions.