Hyperspectral imaging for dynamic thin film interferometry.

ABSTRACT: Dynamic thin film interferometry is a technique used to non-invasively characterize the thickness of thin liquid films that are evolving in both space and time. Recovering the underlying thickness from the captured interferograms, unconditionally and automatically is still an open problem. Here we report a compact setup employing a snapshot hyperspectral camera and the related algorithms for the automated determination of thickness profiles of dynamic thin liquid films. The proposed technique is shown to recover film thickness profiles to within 100 nm of accuracy as compared to those profiles reconstructed through the manual color matching process. Subsequently, we discuss the characteristics and advantages of hyperspectral interferometry including the increased robustness against imaging

SUBMITTER: Chandran Suja V 

PROVIDER: S-EPMC7347853 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature