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The MRSEC Facilities Network is a nationwide partnership of NSF supported MRSEC centers designed to provide support to researchers in the broad area of Materials Research in academic, government and industrial laboratories around the world.
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The Vibrational Spectroscopy Laboratory houses several modified
infrared and Raman spectrometers which are able to accommodate
unconventional sample types. Available to the polymer research
community are three Raman instruments incorporating dispersive or
Fourier transform capabilities, a Bruker FT spectrometer, an HG 25 high
throughput laser spectrometer, and a U-1000 high resolution laser
spectrometer. The infrared instruments include Bruker 38-FTIR and
Bruker 98 vacuum FTIR spectrometers, a Nicolet 60SXB FTIR spectometer,
and a Perkin Elmer 2000 FTIR spectrometer. Capabilities of these
instruments include; temperature sweeps from 6 to 900 degrees Kelvin,
time-resolved spectroscopy at 6 microsecond resolution, time-resolved
dynamic-mechanical infrared spectroscopy, low frequency Raman
spectroscopy (to assess degree of cystallinity and crystallite size),
and reflectance spectroscopy at a lateral resolution of 1 micron and
depth resolution of 10 angstroms for air/solid, air/liquid, and
liquid/liquid interfaces.
The extension of infrared reflectance techniques to air/liquid and
liquid/ liquid interfaces using Langmuir troughs, allows examination
for these films at either low compression rates or by step compression.
These films can then be transferred to solid surfaces for further
processing and analysis. Spectroscopic analysis software, developed in
house, extends the laboratory's commercial modeling packages to
facilitate spectral comparisons and lends insight into the static and
dynamic behavior of polymer chains. |
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