A Powerful Nonlinear Optical Technique to Characterize Surfaces and Interfaces Sum Frequency Generation Vibrational Spectroscopy

2012 ◽  
Vol 441 ◽  
pp. 703-707
Author(s):  
Xiao Lin Lu ◽  
Zhan Chen ◽  
Xin Ping Wang
Keyword(s):  
Vibrational Spectroscopy ◽  
Nonlinear Optical ◽  
Sum Frequency Generation ◽  
Molecular Structures ◽  
Optical Technique ◽  
General Introduction ◽  
Sum Frequency ◽  
Surfaces And Interfaces ◽  
Frequency Generation

In the last two decades, a nonlinear optical technique - sum frequency generation (SFG) vibrational spectroscopy was developed into a powerful characterization method to probe the molecular structures of various surfaces and interfaces in situ. In this paper, we gave a general introduction of the SFG theory and two case studies to demonstrate the power of the SFG spectroscopy.

scholarly journals Applications of sum-frequency generation vibrational spectroscopy in friction interface

Friction ◽  
2021 ◽  
Author(s):  
Zhifeng Liu ◽  
Mengmeng Liu ◽  
Caixia Zhang ◽  
Hongyan Chu ◽  
Liran Ma ◽  
...  
Keyword(s):  
Real Time ◽  
Vibrational Spectroscopy ◽  
Theoretical Background ◽  
Sum Frequency Generation ◽  
Molecular Structures ◽  
Nonlinear Optical Spectroscopy ◽  
Sum Frequency ◽  
Frequency Generation ◽  
Nondestructive Investigation

AbstractSum-frequency generation (SFG) vibrational spectroscopy is a second-order nonlinear optical spectroscopy technique. Owing to its interfacial selectivity, SFG vibrational spectroscopy can provide interfacial molecular information, such as molecular orientations and order, which can be obtained directly, or molecular density, which can be acquired indirectly. Interfacial molecular behaviors are considered the basic factors for determining the tribological properties of surfaces. Therefore, owing to its ability to detect the molecular behavior in buried interfaces in situ and in real time, SFG vibrational spectroscopy has become one of the most appealing technologies for characterizing mechanisms at friction interfaces. This paper briefly introduces the development of SFG vibrational spectroscopy and the essential theoretical background, focusing on its application in friction and lubrication interfaces, including film-based, complex oil-based, and water-based lubricating systems. Real-time detection using SFG promotes the nondestructive investigation of molecular structures of friction interfaces in situ with submonolayer interface sensitivity, enabling the investigation of friction mechanisms. This review provides guidance on using SFG to conduct friction analysis, thereby widening the applicability of SFG vibrational spectroscopy.

Study of FeOx/Au inverse model catalysts by in situ sum frequency generation vibrational spectroscopy

2009 ◽  
Vol 96 (2) ◽  
pp. 345-356 ◽  
Author(s):  
Orsolya Hakkel ◽  
Zoltán Pászti ◽  
Tamás Keszthelyi ◽  
Krisztina Frey ◽  
László Guczi
Keyword(s):  
Vibrational Spectroscopy ◽  
Sum Frequency Generation ◽  
Inverse Model ◽  
Model Catalysts ◽  
Sum Frequency ◽  
Frequency Generation

Studying Polymer Surfaces and Interfaces with Sum Frequency Generation Vibrational Spectroscopy

2016 ◽  
Vol 89 (1) ◽  
pp. 466-489 ◽  
Author(s):  
Xiaolin Lu ◽  
Chi Zhang ◽  
Nathan Ulrich ◽  
Minyu Xiao ◽  
Yong-Hao Ma ◽  
...  
Keyword(s):  
Vibrational Spectroscopy ◽  
Sum Frequency Generation ◽  
Polymer Surfaces ◽  
Sum Frequency ◽  
Surfaces And Interfaces ◽  
Frequency Generation
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