Visualization of microstructure in soft polymer films with a combined near-field/confocal polarization microscope

Andrey V. Kosterin, C. Daniel Frisbie

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

We describe experiments demonstrating the performance of a recently developed combined near-field and confocal polarization microscope, which was designed for imaging microstructure in soft anisotropic polymer films. Phase modulation (PM) of light (488 nm) is implemented in both near-field and confocal channels to increase sensitivity to birefringence. Images of radially symmetric objects, spherulites, in the polyethylene oxide (PEO) films confirmed the high performance of this microscope in imaging of both magnitude and sign of birefringence. On the other hand, PM images of the crosslinked polybutadiene (PB) films revealed unexpected domain structure that indicates heterogeneity in local chain deformations and alignments. It is shown that the domains are correlated with the local density fluctuations of crosslinks.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages49-56
Number of pages8
Volume3791
StatePublished - 1999
EventProceedings of the 1999 Near-Field Optics: Physics, Devices, and Information Processing - Denver, CO, USA
Duration: Jul 22 1999Jul 23 1999

Other

OtherProceedings of the 1999 Near-Field Optics: Physics, Devices, and Information Processing
CityDenver, CO, USA
Period7/22/997/23/99

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