Nonlinear Optical Microscopy for Imaging Patterned Self-Assembled Monolayers

1996 ◽  
Vol 440 ◽  
Author(s):  
L. Smilowitz ◽  
Q.X. Jia ◽  
X. Yang ◽  
D.Q. Li ◽  
D. McBranch ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Second Harmonic ◽  
Self Assembled Monolayers ◽  
Optical Technique ◽  
Nonlinear Optical Microscopy ◽  
Surface Sensitivity ◽  
Surfaces And Interfaces ◽  
Assembled Monolayers ◽  
Potential Applications ◽  
Self Assembled

AbstractWe have used the inherent surface sensitivity of second harmonic generation (SHG) to develop an instrument for nonlinear optical (NLO) microscopy of surfaces and interfaces. This optical technique is ideal for imaging nanometer thick self-assembled monolayers (SAM's) which have been patterned using photolithographic techniques. In this paper we demonstrate the application of SHG microscopy to patterned SAM's of the noncentrosymmetric molecule calixarene and discuss other potential applications for this new technique.

In Situ Measurement of the Second Harmonic Signal of Adsorbing Nonlinear Optical Ionically Self-Assembled Monolayers.

2001 ◽  
Vol 707 ◽  
Author(s):  
C. Brands ◽  
P.J. Neyman ◽  
M.T. Guzy ◽  
S. Shah ◽  
K.E Van Cott ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Second Harmonic ◽  
Salt Water ◽  
Harmonic Signal ◽  
Deionized Water ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Second Harmonic Signal

ABSTRACTIonically self-assembled monolayers (ISAMs) have recently been shown to spontaneously exhibit a polar ordering that gives rise to substantial second order nonlinear optical response. The deposition of ISAMs has been studied in situ via second harmonic generation. This is a particularly sensitive probe of the growth of nanometer-thick films since the centrosymmetry of the immersion solutions, the substrate, and the container yields no SHG contribution from these bulk components. Upon immersion in the NLO-active polyelectrolyte solution, the SHG rises sharply over the first minute. When a film is immersed into salt water, the SHG decreases significantly only to be restored when the salt solution is replaced with deionized water.

In Situ Second Harmonic Generation Measurements of the Growth of Nonlinear Optical Ionically Self-Assembled Monolayers

2000 ◽  
Vol 660 ◽  
Author(s):  
C. Brands ◽  
P.J. Neyman ◽  
M.T. Guzy ◽  
S. Shah ◽  
K.E. Van Cott ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Self Assembled Monolayers ◽  
Optical Polymer ◽  
Wide Range ◽  
Assembled Monolayers ◽  
Self Assembled

ABSTRACTIonically self-assembled monolayers (ISAMs) have recently been shown to spontaneously exhibit a polar ordering that gives rise to a substantial second order nonlinear optical (NLO) response. Here, the deposition of ISAMs has been studied in situ via second harmonic generation (SHG). We show that the adsorption and ordering of a noncentrosymmetric nonlinear optical polymer is constant over a wide range of concentrations. Upon immersion in the NLO-active polyelectrolyte solution, the SHG rises sharply over the first minute. Immersion in the NLO-inactive partner polyelectrolyte leads to a reduction in the SHG signal. Furthermore, when the film is removed from the NLO-active solution and allowed to dry, the SHG increases rapidly as the water evaporates. These studies provide greater understanding of the processes by which noncentrosymmetric order is formed in ISAM films and allows design of improved self- assembled nonlinear optical materials.

scholarly journals Nonlinear optical responses of self-assembled monolayers functionalized with indolino–oxazolidine photoswitches

2018 ◽  
Vol 20 (33) ◽  
pp. 21590-21597 ◽  
Author(s):  
Claire Tonnelé ◽  
Kornelia Pielak ◽  
Jean Deviers ◽  
Luca Muccioli ◽  
Benoît Champagne ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Self Assembled Monolayers ◽  
Optical Responses ◽  
Assembled Monolayers ◽  
Self Assembled

The second harmonic generation responses of photoresponsive self-assembled monolayers based on indolino–oxazolidine derivatives are computed using a sequential MD/DFT approach.

In Situ Measurement of the Second Harmonic Signal of Adsorbing Nonlinear Optical Ionically Self-assembled Monolayers

2001 ◽  
Vol 710 ◽  
Author(s):  
C. Brands ◽  
P.J. Neyman ◽  
M.T. Guzy ◽  
S. Shah ◽  
K.E Van Cott ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Second Harmonic ◽  
Salt Water ◽  
Harmonic Signal ◽  
Deionized Water ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Self Assembled ◽  
Second Harmonic Signal

ABSTRACTIonically self-assembled monolayers (ISAMs) have recently been shown to spontaneously exhibit a polar ordering that gives rise to substantial second order nonlinear optical response. The deposition of ISAMs has been studied in situ via second harmonic generation. This is a particularly sensitive probe of the growth of nanometer-thick films since the centrosymmetry of the immersion solutions, the substrate, and the container yields no SHG contribution from these bulk components. Upon immersion in the NLO-active polyelectrolyte solution, the SHG rises sharply over the first minute. When a film is immersed into salt water, the SHG decreases significantly only to be restored when the salt solution is replaced with deionized water.

Nonlinear optical properties of oligothiophene self-assembled monolayers on gold substrate

2002 ◽  
Vol 117 (8) ◽  
pp. 4016-4021 ◽  
Author(s):  
E. Mishina ◽  
Y. Miyakita ◽  
Q.-K. Yu ◽  
S. Nakabayashi ◽  
H. Sakaguchi
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Self Assembled Monolayers ◽  
Gold Substrate ◽  
Assembled Monolayers ◽  
Self Assembled
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