Hinrichs, K.; Blevins, B.; Furchner, A.; Yadavalli, N.S.; Minko, S.; Horvath, R.; Mangold, M.: Multiscale IR polarimetry of anisotropic nanofibers. In: Israel Gannot ... [Ed.] : Optical Fibers and Sensors for Medical Diagnostics, Treatment and Environmental Applications XXIII : 28-30 January 2023, San Francisco, California, United StatesBellingham, Wash.: SPIE, 2023 Proceedings of SPIE ; 12372. - ISBN 978-1-5106-5849-3, p. 123720G/1-4
10.1117/12.2653330
Abstract:
A straightforward multi-scale infrared (IR) spectroscopic characterization of anisotropic polymer nanofibers for material research and biomedical applications is presented. Polarization dependent IR spectroscopies with spatial resolutions from a few mm down to a few 10 nm (by atomic force microscopy-based infrared spectroscopy, AFM-IR) and time resolutions from the min to µs range (by infrared dual-comb polarimetry, IR-DCP) are used. Compared to AFM-IR, which measures the absorption via the photothermal expansion, and IR ellipsometry, which measures amplitudes of sand p-polarized radiation and their phase differences, IR-DCP measures separately s-and p-polarized amplitudes and phases.