Grating coupled optical waveguide interferometry combined with in situ spectroscopic ellipsometry to monitor surface processes in aqueous solutions

Emil Agocs, Peter Kozma, Judit Nador, Andras Hamori, Milan Janosov, Benjamin Kalas, Sandor Kurunczi, Balint Fodor, Eva Ehrentreich-Förster, M. Fried, R. Horváth, P. Petrik

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Two surface-sensitive label-free optical methods, grating coupled interferometry (GCI) and spectroscopic ellipsometry (SE) was integrated into a single instrument. The new tool combines the high sensitivity of GCI with the spectroscopic capabilities of SE. This approach allows quantification with complex optical models supported by SE and accurate measurements with the evanescent field of GCI. A flow cell was developed to perform combined and simultaneous investigations on the same sensor area in liquid (or gas) environments. The capabilities of the instrument were demonstrated in simple refractometry and protein adsorption experiments.

Original languageEnglish
JournalApplied Surface Science
DOIs
Publication statusAccepted/In press - Jun 15 2016

    Fingerprint

Keywords

  • Ellipsometry
  • Interferometry
  • Laser coupling
  • Optical sensing and sensors
  • Waveguides

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this