Sum Frequency Generation Vibrational Spectra: The Influence of Experimental Geometry for an Absorptive Medium or Media

2009 ◽  
Vol 113 (12) ◽  
pp. 2768-2774 ◽  
Author(s):  
Roger L. York ◽  
Yimin Li ◽  
George J. Holinga ◽  
Gabor A. Somorjai
Keyword(s):  
Vibrational Spectra ◽  
Sum Frequency Generation ◽  
Sum Frequency ◽  
Absorptive Medium ◽  
Frequency Generation ◽  
Experimental Geometry

Deriving the complete molecular conformation of self-assembled alkanethiol molecules from sum-frequency generation vibrational spectra

2009 ◽  
Vol 79 (12) ◽  
Author(s):  
Bernard Bourguignon ◽  
Wanquan Zheng ◽  
Serge Carrez ◽  
Aimeric Ouvrard ◽  
Frédéric Fournier ◽  
...  
Keyword(s):  
Vibrational Spectra ◽  
Molecular Conformation ◽  
Sum Frequency Generation ◽  
Sum Frequency ◽  
Self Assembled ◽  
Frequency Generation

scholarly journals Modeling of Infrared–Visible Sum Frequency Generation Microscopy Images of a Giant Liposome

2016 ◽  
Vol 22 (6) ◽  
pp. 1128-1145
Author(s):  
Victor Volkov ◽  
Carole C. Perry
Keyword(s):  
Numerical Aperture ◽  
Image Plane ◽  
Sum Frequency Generation ◽  
Subcellular Organelles ◽  
Sum Frequency ◽  
Nonlinear Responses ◽  
Simulation Results ◽  
Frequency Generation ◽  
Experimental Geometry ◽  
Microscopy Images

AbstractThe article explores the theory of infrared–visible sum frequency generation microscopy of phospholipid envelopes with dimensions larger than the wavelength of the nonlinear emission. The main part of the study concerns derivation and accounting for the contributions of effective nonlinear responses specific to sites on the surfaces of a bilayer envelope and their dependence on polarization condition and experimental geometry. The nonlinear responses of sites are mapped onto the image plane according to their emission directions and the numerical aperture of a sampling microscope objective. According to the simulation results, we discuss possible approaches to characterize the shape of the envelope, to extract molecular hyperpolarizabilities, and to anticipate possible heterogeneity in envelope composition and anisotropy of the environment proximal to the envelope. The modeling approach offers a promising analytic facility to assist connecting microscopy observations in engineered liposomes, cellular envelopes, and subcellular organelles of relatively large dimensions to molecular properties, and hence to chemistry and structure down to available spatial resolution.

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