Journal
OPTICAL MATERIALS
Volume 80, Issue -, Pages 30-36Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2018.04.007
Keywords
Nonlinear optics; Second harmonic generation; Green lithography; Riboflavin; Chitosan
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Funding
- LABEX iMUST of Universite de Lyon within the program Investissements d'Avenir [ANR-11-IDEX-0007, ANR-10-LABX-0064]
- Pulsalys
- EEA doctoral school
- NanoLyon platform
- France-Brazil CAPES-COFECUB program [Sv852-15]
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We report the use of the Second Harmonic Generation response from a riboflavin doped chitosan film as a characterization method of the film morphology. This film is of particular interest in the development of new and bio-sourced material for eco-friendly UV lithography. The method allows us to determine how riboflavin is distributed as a function of film depth in the sample. This possibility is of importance in order to have a better understanding of the riboflavin influence in chitosan films during the lithography process. On the contrary, linear optical techniques provide no information beyond the mere confirmation of the riboflavin presence.
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