
Anasys
Instruments, the company that pioneered nanoscale thermal analysis and
nanoscale IR spectroscopy using an AFM, is pleased to announce that Dr. Bruce
Chase is presenting an invited talk entitled "Structure and Orientation in
Electrospun Nanofibers" at the 2012 Pittsburgh Conference, as part of the
Organized Contributed Session on Analytical Applications of Broadly Tunable
Lasers. The presentation will include spatially resolved measurements of
molecular orientation obtained by a technique combining atomic force microscopy
and infrared spectroscopy (AFM-IR). The measurements were performed in
collaboration with Anasys Instruments using an AFM-IR instrument incorporating
arbitrary polarization angle control. "By measuring the infrared
absorption of a sample locally as a function of polarization angle, we can
identify regions of a sample that have a high degree of molecular
orientation," says Anasys CTO Craig Prater. "Controlling molecular
orientation is a critically important technology for improving the performance
of polymers-with the polarization control capability we provide a new ability
to observe molecular orientation with high spatial resolution."
Dr. Chase's presentation will contain important insights on molecular
orientation of electrospun PVDF fibers. This is an important research area
because of the vast applications of electrospun fibers ranging from textiles
and advanced composites to biomedical applications such as tissue engineering
scaffolds and artificial blood vessels. Speaking about the results, Professor
Chase said that "Our ability to produce enhanced material properties in
electrospun fibers is critically dependent on understanding molecular level
structure at the nanoscale. The NanoIR results have given us a first look at
chain orientation of individual fibers."
Dr. Chase is a Research Professor in the Department of Materials Science and
Engineering at the University of Delaware and the Chief Technical Officer of
Pair Technologies, LLC. He retired from DuPont in 2009 as a DuPont Fellow and
Chair of the DuPont Fellows Forum. His co-authors on this paper are
Professor John Rabolt, Karl W. and Renate Boer Professor of Materials Science
at the University of Delaware and Xiaoqian Ma, whose doctoral dissertation this
research falls under and Dr. Qichi Hu from Anasys who performed the
measurements.
For further details, please visit
www.anasysinstruments.com
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