Regensburg 2022 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 23: Optical Analysis of Thin Films (Reflection, Ellipsometry, Raman, IR-DUV Spectroscopy, ...)

DS 23.6: Vortrag

Donnerstag, 8. September 2022, 12:00–12:15, H14

IR dual-comb polarimetry of a nanofiber scaffold — •Karsten Hinrichs¹, Brianna Blevins^2,3, Andreas Furchner⁴, Nataraja Sekhar Yadavalli^2,3, Sergiy Minko^2,3,5, Raphael Horvath⁶, and Markus Mangold⁶ — ¹Leibniz-Institut für Analytische Wissenschaften - ISAS e.V., Schwarzschildstraße 8, 12489 Berlin, Germany — ²Nanostructured Materials Laboratory, The University of Georgia — ³Department of Chemistry, The University of Georgia — ⁴Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Division Energy and Information, Schwarzschildstraße 8, 12489 Berlin, Germany — ⁵Department of Textile, Fiber, and Polymer Sciences, The University of Georgia, Athens, Georgia 30602, United States — ⁶IRsweep AG, Laubisruetistrasse 44, 8712 Staefa, Switzerland

In this study the transmission properties of an anisotropic nanofiber scaffold are investigated non-invasively under ambient conditions by IR dual-comb polarimetry (DCP). Good agreement between DCP and classical FTIR polarimetry is found for amplitude and phase measurements at various azimuthal sample rotations, proving DCP as a new method for the study of such anisotropic samples in very short measurement times. A spectral information in the range of 1200 cm-1 to 1300 cm-1 can be achieved in 0.065 ms at 1.4 cm-1 spectral resolution showing the potential for imaging applications, time resolved studies and hyperspectral spectroscopy of anisotropic samples. We acknowledge financial support by the EU through EFRE 1.8/13 and the Horizon 2020 grant 820419 and by the BMBF through CatLab (03EW0015A).